research communications
Crystal structures of two new carbazole derivatives: 12-(4-nitrophenyl)-7-phenylsulfonyl-7H-benzofuro[2,3-b]carbazole and 2-methyl-4-(4-nitrophenyl)-9-phenylsulfonyl-9H-thieno[2,3-b]carbazole
aDepartment of Physics, RKM Vivekananda College (Autonomous), Chennai 600 004, India, and bDepartment of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
*Correspondence e-mail: ksethusankar@yahoo.co.in
The title compounds, C30H18N2O5S, (I), and C27H18N2O4S2, (II), are carbazole derivatives with a phenylsulfonyl group and a nitrophenyl group attached to the carbazole moiety in identical positions in both molecules. A benzofuran ring system in (I) and a methylthiophene ring in (II) are fused with the respective carbazole moieties on the same sides. The mean plane of the carbazole ring system makes a dihedral angle of 3.17 (7)° with the benzofuran ring system in (I) and a dihedral angle of 3.39 (11)° with the methylthiophene ring in (II), implying that both fused units are essentially planar. The mean planes of the carbazole ring systems in both the compounds are almost orthogonal to the respective nitro-substituted phenyl rings, making dihedral angles of 75.64 (10) and 77.63 (12)° in compounds (I) and (II), respectively. In (I), the phenylsulfonyl ring system is positionally disordered with a refined occupancy ratio of 0.63 (2):0.37 (2). In both compounds, the molecular structures are stabilized by intramolecular C—H⋯O hydrogen bonds, generating S(6) ring motifs with the sulfone group O atoms. In the crystal of compound (I), molecules are linked by pairs of C—H⋯O hydrogen bonds, which generate R22(18) inversion dimers, and interconnected by C(14) chains running along the c-axis direction, whereas in compound (II), the C—H⋯O hydrogen bonds generate R43(37) ring motifs. In the crystals of both compounds, C—H⋯O hydrogen-bonded sheets are formed lying parallel to (10-1). In addition, C—H⋯π and offset π–π interactions [intercentroid distance = 3.7158 (14) Å in (I) and 3.9040 (15) Å in (II)] are also present in the crystals of both compounds.
Keywords: crystal structure; carbazole derivatives; phenylsulfonyl; benzofuran; thiophene; hydrogen bonding; C—H⋯π interactions; offset π–π interactions.
CCDC reference: 1473995
1. Chemical context
Carbazole and its derivatives are interesting compounds owing to their applications in pharmacy and molecular electronics. Carbazole derivatives exhibit various biological activities such as antitumor (Itoigawa et al., 2000), anti-oxidative (Tachibana et al., 2001), anti-inflammatory and antimutagenic (Ramsewak et al., 1999). They also exhibit electroactivity and luminescence and are considered to be potential candidates for electronic applications, such as colour displays, organic semiconductors, laser and solar cells (Friend, et al. 1999). Tetrahydrocarbazole systems are present in the framework of a number of indole-type of biological interest (Saxton, 1983). Carbazole-based heterocyclic polymer systems can be chemically or electrochemically polymerized to give products with a number of applications, such as rechargeable batteries (Sacak, 1999) and electrochromic displays (Santhanam & Sundaresan, 1986). This enables their use as suitable building blocks for the design and synthesis of molecular glasses, which are widely studied as components of electroactive and photoactive materials (Zhang et al., 2004). Against this background, the X-ray of the title compounds, (I) and (II), has been carried out to study their structural aspects and the results are presented here.
2. Structural commentary
The molecular structures of the title compounds, (I) and (II), are illustrated in Figs. 1 and 2, respectively. In both compounds, the carbazole ring systems (N1/C1–C12) are essentially planar with maximum deviations of 0.089 (3) and 0.089 (3) Å for atom C10 in compounds (I) and (II), respectively. In compound (I), the benzofuran moiety (O5/C10/C11/CC25–C30) is essentially planar with a maximum deviation of 0.021 (3) Å for atom C10 while the phenylsulfonyl ring system is positionally disordered with a refined occupancy factor of 0.63 (2): 0.37 (2).
The mean planes of the carbazole ring systems make dihedral angles of 3.17 (7) and 3.39 (11)°, respectively, with the benzofuran ring in (I) and the methylthiophene ring in (II), indicating that the ring systems they are essentially coplanar. The nitrophenyl rings in compounds (I) and (II) are inclined to the carbazole ring system by 75.64 (10) and 77.63 (12)°, respectively. The NO2 groups are inclined to the benzene ring (C19–C24) to which they are attached by 9.8 (4)° in (I) and 9.3 (3)° in (II). The phenylsulfonyl ring (C13–C18) is almost normal to the nitro-substituted phenyl ring (C19–C24) with a dihedral angle of 84.7 (2)° in (I) and 83.98 (17)° in (II).
In both compounds, as a result of the electron-withdrawing character of the phenylsulfonyl group, the N—Csp2 bond lengths are longer than the mean value of 1.355 (14) Å for N—C bond lengths (CSD; Groom et al., 2016). Atom S1 has a distorted tetrahedral geometry. The widening of the O1=S1=O2 angle and narrowing of the N1—S1—C13 angle from the ideal tetrahedral values are attributed to the Thorpe–Ingold effect (Bassindale, 1984). The widening of the angles may be due to the repulsive interaction between the two short S=O bonds.
The sums of the bond angles around atom N1 are 349.58° in (I) and 351.18° in (II), intermediate between sp2 and sp3 In both compounds, the molecular structure is stabilized by intramolecular C—H⋯O hydrogen bonds, which generate S(6) ring motifs with the sulfone oxygen atoms (Tables 1 and 2).
|
3. Supramolecular features
In the crystal of compound (I), molecules are linked via pairs of C20—H20⋯O2ii hydrogen bonds (Table 1), forming R22(18) inversion dimers. The molecules are also interconnected by C14—H14⋯O4i hydrogen bonds, which generate C(14) chains. These interactions result in the formation of sheets parallel to (10). The crystal packing also features C16—H16⋯Cg1iii and C23—H23⋯Cg3iv interactions (Table 1 and Fig. 3; Cg1 and Cg3 are the centroids of the rings C10/C11/C25/30/O5 and C1–C6, respectively. There are also offset π–π interactions present [Cg4⋯Cg4(−x + 1, −y + 2, −z) = 3.7158 (14) Å, interplanar distance = 3.472 (1) Å, slippage = 1.324 (11) Å; Cg4 is the centroid of the C7–C12 ring]; see Table 1 and Fig. 3.
In the crystal of compound (II), molecules are linked by C3—H3⋯O4i and C14—H14⋯Oii4 hydrogen bonds (Table 2), which result in the formation of R43(37) ring motifs (Fig. 4). The crystal packing also features pairs of C20—H20⋯O2iii hydrogen bonds, which generate R22(18) inversion dimers (Fig. 5), which are interconnected by C16—H16⋯Cg1iv and C23—H23⋯Cg3v interactions [Cg1 and Cg3 are the centroids of rings C10/C11/C25/C26/S2 and C1–C6, respectively]. These interactions result in the formation of sheets parallel to (10). There are also offset π–π interactions present [Cg4⋯Cg4(−x + 1, −y, −z + 2) = 3.9040 (15) Å, interplanar distance = 3.791 (1) Å, slippage 0.932 Å; Cg4 is the centroid of the C7–C12, ring]; see Table 2 and Figs. 4 and 5.
4. Database survey
A search of Cambridge Structural Database (CSD version 5.37; last update May 2016; Groom et al., 2016) yielded four hits for 7H-[1] benzofuran[2,3-b]carbazole and 47 hits for 9-(phenylsulfonyl)-9H-carbazole. However, the compound 7-phenylsulfonyl-7H-benzofuran[2,3-b]carbazole (EYOFEE01; Panchatcharam et al., 2011), which crystallizes in P21/c is the closest analogue of compound (I). The compound 2-methyl-9- (phenylsulfonyl)-9H-thieno[2,3-b]carbazole (IQOBIA; Sureshbabu et al., 2011), which crystallizes in P21/c, is the closest analogue of compound (II). The crystal packing of the title compounds is stabilized by C—H⋯O, C—H⋯π and π–π interactions but the related structures (EYOFEE01; Panchatcharam et al., 2011) exhibit C—H⋯π and π–π interactions only.
5. Synthesis and crystallization
Compound (I): A solution of [3-(4-nitrobenzoyl)-1-(phenylsulfonyl)-1H-indol-2-yl]methyl pivalate (0.1 g, 1.92 mmol), anhydrous SnCl4 (0.06 g, 2.30 mmol) and benzofuran (0.027 g, 2.30 mmol) in dry DCE (10 ml) was stirred at room temperature under nitrogen for 3 h. After completion of the reaction (monitored by TLC), it was poured into ice–water (100 ml). The organic layer was separated and the aqueous layer was extracted with DCM (2 × 20 ml). The combined extract was washed with water (3 × 50ml) and dried (Na2SO4). Removal of the solvent by column chromatographic purification (silica gel; hexane–ethyl acetate, 8:2) yielded compound (I) as a colourless solid (0.073 g, 74%). Colourless block-like crystals were obtained by slow evaporation of a solution of (I) in ethyl acetate at room temperature (m.p. 589–591 K).
Compound (II): A solution of [3-(4-nitrobenzoyl)-1-(phenylsulfonyl)-H-indol-2-yl]methyl pivalate (0.1 g, 1.92 mmol), anhydrous SnCl4 (0.06 g, 2.30 mmol) and 2-methylthiophene (0.024 g, 2.30 mmol) in dry DCE (10 ml) was stirred at room temperature under nitrogen atmosphere for 3 h. After the completion of the reaction (monitored by TLC), it was poured into ice–water (100 ml), the organic layer was separated and the aqueous layer was extracted with DCM (2 × 20ml). The combined extract was washed with water (3 × 50 ml) and dried (Na2SO4). Removal of the solvent by column chromatographic purification (silica gel; hexane–ethyl acetate, 8:2) yielded compound (II) as a colourless solid (0.067 g, 72%). Colourless block-like crystals were obtained by slow evaporation of a solution of (II) in ethyl acetate at room temperature (m.p. 531–533 K).
6. Refinement
Crystal data, data collection and structure and (II) are summarized in Table 3. The positions of the hydrogen atoms were localized from the difference electron-density maps. The C-bound H atoms were treated as riding atoms: C—H = 0.93-0.96 Å with Uiso(H)= 1.5Ueq(C-methyl) and 1.2Ueq(C) for other H atoms. In compound (I), the phenylsulfonyl ring (C13–C18) is positionally disordered with a refined occupancy ratio of 0.63 (2): 0.37 (2). The bond distances of the disordered components were restrained using standard similarity restraint SADI [SHELXL97; Sheldrick, 2008] with s.u. of 0.01Å. Ellipsoid displacement (SIMU and DELU) restraints were also applied to the disordered ring. The methyl groups were allowed to rotate, but not to tip, to best fit the electron density.
details for compounds (I)
|
Supporting information
CCDC reference: 1473995
https://doi.org/10.1107/S2056989016016996/su5333sup1.cif
contains datablocks I, II, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989016016996/su5333Isup2.hkl
Structure factors: contains datablock II. DOI: https://doi.org/10.1107/S2056989016016996/su5333IIsup3.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2056989016016996/su5333Isup4.cml
Supporting information file. DOI: https://doi.org/10.1107/S2056989016016996/su5333IIsup5.cml
For both compounds, data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).C30H18N2O5S | F(000) = 1072 |
Mr = 518.52 | Dx = 1.407 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 4318 reflections |
a = 12.1347 (5) Å | θ = 2.4–25.0° |
b = 12.0708 (5) Å | µ = 0.18 mm−1 |
c = 17.6391 (7) Å | T = 296 K |
β = 108.617 (2)° | Block, colourless |
V = 2448.50 (17) Å3 | 0.25 × 0.20 × 0.10 mm |
Z = 4 |
Bruker Kappa APEXII CCD diffractometer | 4318 independent reflections |
Radiation source: fine-focus sealed tube | 2814 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.040 |
ω & φ scans | θmax = 25.0°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −14→11 |
Tmin = 0.958, Tmax = 0.982 | k = −14→14 |
32749 measured reflections | l = −18→20 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.131 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0594P)2 + 0.7253P] where P = (Fo2 + 2Fc2)/3 |
4318 reflections | (Δ/σ)max = 0.002 |
401 parameters | Δρmax = 0.28 e Å−3 |
140 restraints | Δρmin = −0.21 e Å−3 |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
C8 | 0.36384 (19) | 0.94124 (18) | 0.02090 (14) | 0.0501 (6) | |
C9 | 0.3369 (2) | 0.96522 (19) | −0.05953 (15) | 0.0552 (6) | |
H9 | 0.3249 | 0.9108 | −0.0987 | 0.066* | |
C10 | 0.3295 (2) | 1.07565 (19) | −0.07650 (14) | 0.0512 (6) | |
C25 | 0.2981 (2) | 1.22953 (19) | −0.14680 (14) | 0.0540 (6) | |
C26 | 0.2698 (2) | 1.3006 (2) | −0.21190 (16) | 0.0669 (7) | |
H26 | 0.2531 | 1.2750 | −0.2641 | 0.080* | |
C27 | 0.2680 (2) | 1.4115 (2) | −0.19423 (18) | 0.0729 (8) | |
H27 | 0.2483 | 1.4631 | −0.2356 | 0.088* | |
C28 | 0.2947 (2) | 1.4475 (2) | −0.11625 (17) | 0.0721 (8) | |
H28 | 0.2932 | 1.5231 | −0.1065 | 0.087* | |
C29 | 0.3236 (2) | 1.3757 (2) | −0.05248 (16) | 0.0621 (7) | |
H29 | 0.3418 | 1.4018 | −0.0003 | 0.075* | |
C30 | 0.32498 (19) | 1.26319 (18) | −0.06814 (14) | 0.0497 (6) | |
C11 | 0.34632 (18) | 1.16109 (17) | −0.02110 (13) | 0.0465 (5) | |
C12 | 0.37395 (18) | 1.13576 (18) | 0.06066 (13) | 0.0480 (5) | |
C7 | 0.38385 (18) | 1.02299 (18) | 0.08091 (13) | 0.0488 (6) | |
C6 | 0.4188 (2) | 0.9654 (2) | 0.15713 (15) | 0.0558 (6) | |
C5 | 0.4579 (3) | 1.0012 (3) | 0.23615 (17) | 0.0798 (8) | |
H5 | 0.4621 | 1.0765 | 0.2480 | 0.096* | |
C4 | 0.4905 (3) | 0.9234 (3) | 0.29710 (19) | 0.0967 (10) | |
H4 | 0.5165 | 0.9465 | 0.3502 | 0.116* | |
C3 | 0.4845 (3) | 0.8114 (3) | 0.2793 (2) | 0.0917 (10) | |
H3 | 0.5059 | 0.7604 | 0.3210 | 0.110* | |
C2 | 0.4480 (2) | 0.7735 (2) | 0.20217 (19) | 0.0751 (8) | |
H2 | 0.4449 | 0.6981 | 0.1908 | 0.090* | |
C1 | 0.4157 (2) | 0.8517 (2) | 0.14180 (15) | 0.0575 (6) | |
C19 | 0.38864 (19) | 1.22457 (18) | 0.12135 (13) | 0.0501 (6) | |
C20 | 0.4853 (2) | 1.2920 (2) | 0.14172 (16) | 0.0698 (8) | |
H20 | 0.5419 | 1.2810 | 0.1173 | 0.084* | |
C21 | 0.5000 (2) | 1.3751 (2) | 0.19725 (17) | 0.0749 (8) | |
H21 | 0.5664 | 1.4190 | 0.2114 | 0.090* | |
C22 | 0.4151 (2) | 1.3916 (2) | 0.23098 (15) | 0.0656 (7) | |
C23 | 0.3172 (3) | 1.3273 (3) | 0.21208 (18) | 0.0837 (9) | |
H23 | 0.2601 | 1.3400 | 0.2358 | 0.100* | |
C24 | 0.3051 (2) | 1.2436 (2) | 0.15732 (17) | 0.0726 (8) | |
H24 | 0.2393 | 1.1989 | 0.1443 | 0.087* | |
N1 | 0.38211 (16) | 0.83465 (15) | 0.05764 (12) | 0.0563 (5) | |
N2 | 0.4307 (3) | 1.4799 (2) | 0.29103 (16) | 0.0916 (8) | |
O5 | 0.30118 (15) | 1.11572 (13) | −0.15385 (9) | 0.0620 (5) | |
O3 | 0.3507 (3) | 1.5024 (3) | 0.3147 (2) | 0.1593 (14) | |
O4 | 0.5242 (3) | 1.5253 (2) | 0.31592 (15) | 0.1177 (9) | |
S1 | 0.3009 (3) | 0.72479 (18) | 0.01555 (15) | 0.0506 (10) | 0.63 (2) |
O1 | 0.3496 (10) | 0.6265 (6) | 0.0582 (5) | 0.0755 (19) | 0.63 (2) |
O2 | 0.2837 (9) | 0.7347 (7) | −0.0686 (2) | 0.072 (2) | 0.63 (2) |
C13 | 0.1670 (5) | 0.7463 (4) | 0.0295 (4) | 0.0473 (17) | 0.63 (2) |
C14 | 0.0952 (6) | 0.8257 (4) | −0.0189 (4) | 0.0530 (15) | 0.63 (2) |
H14 | 0.1180 | 0.8613 | −0.0583 | 0.064* | 0.63 (2) |
C15 | −0.0106 (5) | 0.8520 (5) | −0.0086 (4) | 0.0750 (19) | 0.63 (2) |
H15 | −0.0586 | 0.9052 | −0.0410 | 0.090* | 0.63 (2) |
C16 | −0.0447 (4) | 0.7989 (7) | 0.0502 (4) | 0.086 (2) | 0.63 (2) |
H16 | −0.1154 | 0.8164 | 0.0572 | 0.103* | 0.63 (2) |
C17 | 0.0271 (5) | 0.7194 (8) | 0.0987 (4) | 0.090 (3) | 0.63 (2) |
H17 | 0.0043 | 0.6839 | 0.1380 | 0.108* | 0.63 (2) |
C18 | 0.1329 (5) | 0.6931 (6) | 0.0883 (4) | 0.075 (2) | 0.63 (2) |
H18 | 0.1809 | 0.6400 | 0.1207 | 0.090* | 0.63 (2) |
S1' | 0.3118 (8) | 0.7228 (6) | 0.0149 (6) | 0.102 (3) | 0.37 (2) |
O1' | 0.379 (2) | 0.6375 (16) | 0.0646 (13) | 0.133 (7) | 0.37 (2) |
O2' | 0.2987 (18) | 0.7264 (11) | −0.0681 (7) | 0.095 (4) | 0.37 (2) |
C13' | 0.1784 (11) | 0.7417 (13) | 0.0298 (10) | 0.094 (5) | 0.37 (2) |
C14' | 0.1010 (14) | 0.8274 (11) | −0.0020 (12) | 0.094 (4) | 0.37 (2) |
H14' | 0.1214 | 0.8835 | −0.0311 | 0.112* | 0.37 (2) |
C15' | −0.0070 (11) | 0.8293 (15) | 0.0097 (12) | 0.115 (5) | 0.37 (2) |
H15' | −0.0588 | 0.8867 | −0.0116 | 0.138* | 0.37 (2) |
C16' | −0.0375 (10) | 0.746 (2) | 0.0533 (10) | 0.145 (6) | 0.37 (2) |
H16' | −0.1098 | 0.7468 | 0.0611 | 0.174* | 0.37 (2) |
C17' | 0.0399 (14) | 0.660 (2) | 0.0851 (10) | 0.151 (6) | 0.37 (2) |
H17' | 0.0195 | 0.6037 | 0.1142 | 0.181* | 0.37 (2) |
C18' | 0.1478 (12) | 0.6579 (17) | 0.0734 (11) | 0.139 (5) | 0.37 (2) |
H18' | 0.1996 | 0.6005 | 0.0947 | 0.167* | 0.37 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C8 | 0.0494 (13) | 0.0414 (12) | 0.0632 (16) | −0.0007 (10) | 0.0232 (11) | 0.0000 (11) |
C9 | 0.0664 (16) | 0.0426 (13) | 0.0613 (16) | −0.0044 (11) | 0.0270 (12) | −0.0069 (11) |
C10 | 0.0543 (14) | 0.0498 (14) | 0.0523 (15) | −0.0023 (11) | 0.0211 (11) | −0.0048 (11) |
C25 | 0.0598 (15) | 0.0401 (13) | 0.0647 (16) | −0.0039 (11) | 0.0237 (12) | −0.0032 (12) |
C26 | 0.0830 (19) | 0.0594 (16) | 0.0586 (16) | −0.0087 (14) | 0.0230 (14) | 0.0026 (13) |
C27 | 0.086 (2) | 0.0544 (16) | 0.076 (2) | −0.0041 (14) | 0.0218 (15) | 0.0146 (14) |
C28 | 0.092 (2) | 0.0445 (14) | 0.080 (2) | −0.0022 (14) | 0.0282 (16) | 0.0051 (14) |
C29 | 0.0735 (17) | 0.0467 (14) | 0.0677 (17) | −0.0039 (12) | 0.0247 (13) | −0.0053 (13) |
C30 | 0.0488 (13) | 0.0450 (13) | 0.0584 (15) | −0.0028 (10) | 0.0215 (11) | −0.0050 (11) |
C11 | 0.0460 (13) | 0.0378 (12) | 0.0584 (15) | −0.0020 (10) | 0.0204 (11) | 0.0011 (10) |
C12 | 0.0445 (13) | 0.0455 (13) | 0.0551 (14) | −0.0038 (10) | 0.0174 (10) | −0.0044 (11) |
C7 | 0.0449 (13) | 0.0458 (13) | 0.0554 (14) | −0.0010 (10) | 0.0155 (11) | 0.0037 (11) |
C6 | 0.0494 (14) | 0.0566 (15) | 0.0575 (16) | −0.0049 (12) | 0.0118 (11) | 0.0036 (12) |
C5 | 0.091 (2) | 0.0721 (19) | 0.0633 (19) | −0.0111 (16) | 0.0071 (15) | 0.0048 (15) |
C4 | 0.109 (3) | 0.102 (3) | 0.0600 (19) | −0.015 (2) | 0.0007 (17) | 0.0138 (18) |
C3 | 0.086 (2) | 0.087 (2) | 0.088 (2) | 0.0008 (18) | 0.0086 (18) | 0.036 (2) |
C2 | 0.0679 (18) | 0.0649 (18) | 0.086 (2) | 0.0024 (14) | 0.0151 (15) | 0.0206 (16) |
C1 | 0.0469 (14) | 0.0537 (15) | 0.0702 (17) | 0.0007 (11) | 0.0162 (12) | 0.0091 (13) |
C19 | 0.0531 (14) | 0.0442 (13) | 0.0538 (14) | −0.0046 (11) | 0.0180 (11) | −0.0009 (11) |
C20 | 0.0643 (17) | 0.0712 (18) | 0.0826 (19) | −0.0174 (14) | 0.0358 (14) | −0.0242 (15) |
C21 | 0.0733 (18) | 0.0747 (19) | 0.0825 (19) | −0.0272 (15) | 0.0332 (15) | −0.0247 (16) |
C22 | 0.0803 (19) | 0.0528 (15) | 0.0639 (17) | −0.0056 (14) | 0.0232 (14) | −0.0174 (13) |
C23 | 0.0744 (19) | 0.097 (2) | 0.092 (2) | −0.0128 (17) | 0.0439 (16) | −0.0337 (18) |
C24 | 0.0674 (17) | 0.0768 (18) | 0.0816 (19) | −0.0217 (14) | 0.0348 (15) | −0.0278 (15) |
N1 | 0.0583 (12) | 0.0431 (11) | 0.0698 (14) | 0.0006 (9) | 0.0238 (10) | 0.0027 (10) |
N2 | 0.105 (2) | 0.0823 (18) | 0.0870 (19) | −0.0048 (18) | 0.0303 (17) | −0.0308 (15) |
O5 | 0.0860 (12) | 0.0478 (10) | 0.0554 (11) | −0.0062 (8) | 0.0271 (9) | −0.0050 (8) |
O3 | 0.132 (2) | 0.172 (3) | 0.187 (3) | 0.000 (2) | 0.068 (2) | −0.111 (2) |
O4 | 0.142 (2) | 0.0987 (18) | 0.1132 (19) | −0.0397 (17) | 0.0411 (16) | −0.0519 (15) |
S1 | 0.0718 (16) | 0.0251 (13) | 0.0596 (17) | 0.0034 (10) | 0.0278 (11) | 0.0003 (10) |
O1 | 0.090 (5) | 0.024 (2) | 0.106 (4) | 0.013 (3) | 0.022 (3) | 0.011 (2) |
O2 | 0.106 (4) | 0.075 (5) | 0.049 (3) | −0.002 (3) | 0.043 (3) | −0.018 (2) |
C13 | 0.056 (3) | 0.041 (3) | 0.045 (4) | −0.015 (2) | 0.016 (3) | 0.000 (3) |
C14 | 0.060 (3) | 0.053 (3) | 0.043 (3) | −0.007 (2) | 0.011 (2) | −0.001 (2) |
C15 | 0.059 (4) | 0.086 (4) | 0.072 (4) | −0.001 (3) | 0.011 (3) | 0.011 (3) |
C16 | 0.057 (3) | 0.117 (6) | 0.089 (4) | −0.014 (3) | 0.031 (3) | 0.017 (4) |
C17 | 0.077 (4) | 0.125 (6) | 0.077 (4) | −0.003 (4) | 0.038 (3) | 0.032 (4) |
C18 | 0.073 (4) | 0.087 (4) | 0.065 (4) | −0.005 (3) | 0.022 (3) | 0.029 (3) |
S1' | 0.083 (4) | 0.076 (5) | 0.160 (7) | −0.015 (3) | 0.058 (4) | −0.027 (4) |
O1' | 0.098 (9) | 0.053 (7) | 0.222 (13) | −0.004 (6) | 0.014 (7) | −0.009 (6) |
O2' | 0.142 (10) | 0.024 (4) | 0.164 (10) | −0.026 (5) | 0.110 (8) | −0.031 (5) |
C13' | 0.084 (8) | 0.132 (11) | 0.067 (10) | −0.020 (7) | 0.027 (7) | 0.000 (8) |
C14' | 0.073 (7) | 0.139 (10) | 0.075 (8) | −0.020 (6) | 0.032 (6) | −0.024 (6) |
C15' | 0.062 (7) | 0.167 (11) | 0.110 (9) | −0.015 (7) | 0.017 (7) | −0.001 (8) |
C16' | 0.113 (9) | 0.187 (15) | 0.153 (11) | −0.019 (9) | 0.067 (9) | 0.015 (11) |
C17' | 0.141 (10) | 0.178 (14) | 0.166 (10) | −0.015 (10) | 0.095 (9) | 0.024 (11) |
C18' | 0.119 (8) | 0.183 (12) | 0.130 (10) | −0.027 (8) | 0.061 (8) | 0.033 (9) |
C8—C9 | 1.381 (3) | C21—H21 | 0.9300 |
C8—C7 | 1.410 (3) | C22—C23 | 1.368 (4) |
C8—N1 | 1.426 (3) | C22—N2 | 1.472 (3) |
C9—C10 | 1.363 (3) | C23—C24 | 1.372 (4) |
C9—H9 | 0.9300 | C23—H23 | 0.9300 |
C10—O5 | 1.383 (3) | C24—H24 | 0.9300 |
C10—C11 | 1.390 (3) | N1—S1' | 1.645 (6) |
C25—O5 | 1.381 (3) | N1—S1 | 1.677 (3) |
C25—C30 | 1.381 (3) | N2—O3 | 1.204 (3) |
C25—C26 | 1.386 (3) | N2—O4 | 1.209 (3) |
C26—C27 | 1.377 (4) | S1—O1 | 1.428 (4) |
C26—H26 | 0.9300 | S1—O2 | 1.436 (4) |
C27—C28 | 1.379 (4) | S1—C13 | 1.740 (3) |
C27—H27 | 0.9300 | C13—C14 | 1.3900 |
C28—C29 | 1.374 (3) | C13—C18 | 1.3900 |
C28—H28 | 0.9300 | C14—C15 | 1.3900 |
C29—C30 | 1.387 (3) | C14—H14 | 0.9300 |
C29—H29 | 0.9300 | C15—C16 | 1.3900 |
C30—C11 | 1.462 (3) | C15—H15 | 0.9300 |
C11—C12 | 1.406 (3) | C16—C17 | 1.3900 |
C12—C7 | 1.403 (3) | C16—H16 | 0.9300 |
C12—C19 | 1.485 (3) | C17—C18 | 1.3900 |
C7—C6 | 1.451 (3) | C17—H17 | 0.9300 |
C6—C5 | 1.390 (4) | C18—H18 | 0.9300 |
C6—C1 | 1.398 (3) | S1'—O2' | 1.422 (7) |
C5—C4 | 1.387 (4) | S1'—O1' | 1.428 (8) |
C5—H5 | 0.9300 | S1'—C13' | 1.736 (7) |
C4—C3 | 1.384 (5) | C13'—C14' | 1.3900 |
C4—H4 | 0.9300 | C13'—C18' | 1.3900 |
C3—C2 | 1.369 (4) | C14'—C15' | 1.3900 |
C3—H3 | 0.9300 | C14'—H14' | 0.9300 |
C2—C1 | 1.383 (3) | C15'—C16' | 1.3900 |
C2—H2 | 0.9300 | C15'—H15' | 0.9300 |
C1—N1 | 1.423 (3) | C16'—C17' | 1.3900 |
C19—C24 | 1.376 (3) | C16'—H16' | 0.9300 |
C19—C20 | 1.378 (3) | C17'—C18' | 1.3900 |
C20—C21 | 1.373 (3) | C17'—H17' | 0.9300 |
C20—H20 | 0.9300 | C18'—H18' | 0.9300 |
C21—C22 | 1.358 (4) | ||
C9—C8—C7 | 123.5 (2) | C23—C22—N2 | 119.3 (3) |
C9—C8—N1 | 127.4 (2) | C22—C23—C24 | 118.6 (2) |
C7—C8—N1 | 109.02 (19) | C22—C23—H23 | 120.7 |
C10—C9—C8 | 114.1 (2) | C24—C23—H23 | 120.7 |
C10—C9—H9 | 123.0 | C23—C24—C19 | 121.2 (2) |
C8—C9—H9 | 123.0 | C23—C24—H24 | 119.4 |
C9—C10—O5 | 122.5 (2) | C19—C24—H24 | 119.4 |
C9—C10—C11 | 125.9 (2) | C1—N1—C8 | 107.16 (18) |
O5—C10—C11 | 111.62 (19) | C1—N1—S1' | 122.0 (4) |
O5—C25—C30 | 112.2 (2) | C8—N1—S1' | 123.3 (4) |
O5—C25—C26 | 123.2 (2) | C1—N1—S1 | 120.53 (18) |
C30—C25—C26 | 124.5 (2) | C8—N1—S1 | 121.89 (19) |
C27—C26—C25 | 115.6 (2) | O3—N2—O4 | 122.6 (3) |
C27—C26—H26 | 122.2 | O3—N2—C22 | 118.7 (3) |
C25—C26—H26 | 122.2 | O4—N2—C22 | 118.7 (3) |
C26—C27—C28 | 121.1 (3) | C25—O5—C10 | 105.33 (17) |
C26—C27—H27 | 119.5 | O1—S1—O2 | 120.9 (5) |
C28—C27—H27 | 119.5 | O1—S1—N1 | 109.8 (5) |
C29—C28—C27 | 122.4 (3) | O2—S1—N1 | 105.2 (4) |
C29—C28—H28 | 118.8 | O1—S1—C13 | 107.3 (5) |
C27—C28—H28 | 118.8 | O2—S1—C13 | 107.5 (5) |
C28—C29—C30 | 118.1 (2) | N1—S1—C13 | 105.2 (3) |
C28—C29—H29 | 121.0 | C14—C13—C18 | 120.0 |
C30—C29—H29 | 121.0 | C14—C13—S1 | 116.5 (4) |
C25—C30—C29 | 118.3 (2) | C18—C13—S1 | 123.4 (4) |
C25—C30—C11 | 105.33 (19) | C13—C14—C15 | 120.0 |
C29—C30—C11 | 136.3 (2) | C13—C14—H14 | 120.0 |
C10—C11—C12 | 119.5 (2) | C15—C14—H14 | 120.0 |
C10—C11—C30 | 105.46 (19) | C16—C15—C14 | 120.0 |
C12—C11—C30 | 135.0 (2) | C16—C15—H15 | 120.0 |
C7—C12—C11 | 116.4 (2) | C14—C15—H15 | 120.0 |
C7—C12—C19 | 122.4 (2) | C15—C16—C17 | 120.0 |
C11—C12—C19 | 121.1 (2) | C15—C16—H16 | 120.0 |
C12—C7—C8 | 120.5 (2) | C17—C16—H16 | 120.0 |
C12—C7—C6 | 132.6 (2) | C16—C17—C18 | 120.0 |
C8—C7—C6 | 106.8 (2) | C16—C17—H17 | 120.0 |
C5—C6—C1 | 118.6 (2) | C18—C17—H17 | 120.0 |
C5—C6—C7 | 133.2 (2) | C17—C18—C13 | 120.0 |
C1—C6—C7 | 108.0 (2) | C17—C18—H18 | 120.0 |
C4—C5—C6 | 119.2 (3) | C13—C18—H18 | 120.0 |
C4—C5—H5 | 120.4 | O2'—S1'—O1' | 120.6 (13) |
C6—C5—H5 | 120.4 | O2'—S1'—N1 | 108.6 (7) |
C3—C4—C5 | 120.3 (3) | O1'—S1'—N1 | 101.5 (11) |
C3—C4—H4 | 119.8 | O2'—S1'—C13' | 110.4 (12) |
C5—C4—H4 | 119.8 | O1'—S1'—C13' | 112.2 (12) |
C2—C3—C4 | 121.9 (3) | N1—S1'—C13' | 101.3 (6) |
C2—C3—H3 | 119.0 | C14'—C13'—C18' | 120.0 |
C4—C3—H3 | 119.0 | C14'—C13'—S1' | 125.4 (10) |
C3—C2—C1 | 117.4 (3) | C18'—C13'—S1' | 114.5 (10) |
C3—C2—H2 | 121.3 | C13'—C14'—C15' | 120.0 |
C1—C2—H2 | 121.3 | C13'—C14'—H14' | 120.0 |
C2—C1—C6 | 122.6 (3) | C15'—C14'—H14' | 120.0 |
C2—C1—N1 | 128.4 (2) | C16'—C15'—C14' | 120.0 |
C6—C1—N1 | 108.9 (2) | C16'—C15'—H15' | 120.0 |
C24—C19—C20 | 118.2 (2) | C14'—C15'—H15' | 120.0 |
C24—C19—C12 | 121.1 (2) | C15'—C16'—C17' | 120.0 |
C20—C19—C12 | 120.7 (2) | C15'—C16'—H16' | 120.0 |
C21—C20—C19 | 121.5 (2) | C17'—C16'—H16' | 120.0 |
C21—C20—H20 | 119.2 | C18'—C17'—C16' | 120.0 |
C19—C20—H20 | 119.2 | C18'—C17'—H17' | 120.0 |
C22—C21—C20 | 118.4 (2) | C16'—C17'—H17' | 120.0 |
C22—C21—H21 | 120.8 | C17'—C18'—C13' | 120.0 |
C20—C21—H21 | 120.8 | C17'—C18'—H18' | 120.0 |
C21—C22—C23 | 122.0 (2) | C13'—C18'—H18' | 120.0 |
C21—C22—N2 | 118.7 (3) | ||
C7—C8—C9—C10 | −0.9 (3) | C6—C1—N1—C8 | −0.2 (2) |
N1—C8—C9—C10 | −177.3 (2) | C2—C1—N1—S1' | 32.8 (5) |
C8—C9—C10—O5 | −178.72 (19) | C6—C1—N1—S1' | −150.8 (4) |
C8—C9—C10—C11 | 0.0 (4) | C2—C1—N1—S1 | 37.9 (4) |
O5—C25—C26—C27 | 178.4 (2) | C6—C1—N1—S1 | −145.7 (2) |
C30—C25—C26—C27 | −0.9 (4) | C9—C8—N1—C1 | 175.9 (2) |
C25—C26—C27—C28 | 1.0 (4) | C7—C8—N1—C1 | −0.9 (2) |
C26—C27—C28—C29 | −0.5 (4) | C9—C8—N1—S1' | −33.9 (5) |
C27—C28—C29—C30 | −0.3 (4) | C7—C8—N1—S1' | 149.2 (4) |
O5—C25—C30—C29 | −179.2 (2) | C9—C8—N1—S1 | −39.2 (3) |
C26—C25—C30—C29 | 0.1 (4) | C7—C8—N1—S1 | 144.0 (2) |
O5—C25—C30—C11 | −0.4 (3) | C21—C22—N2—O3 | 172.2 (3) |
C26—C25—C30—C11 | 178.9 (2) | C23—C22—N2—O3 | −9.1 (5) |
C28—C29—C30—C25 | 0.5 (4) | C21—C22—N2—O4 | −9.4 (4) |
C28—C29—C30—C11 | −177.8 (2) | C23—C22—N2—O4 | 169.3 (3) |
C9—C10—C11—C12 | 0.2 (4) | C30—C25—O5—C10 | 0.9 (2) |
O5—C10—C11—C12 | 178.98 (18) | C26—C25—O5—C10 | −178.4 (2) |
C9—C10—C11—C30 | −177.9 (2) | C9—C10—O5—C25 | 177.8 (2) |
O5—C10—C11—C30 | 0.9 (2) | C11—C10—O5—C25 | −1.1 (2) |
C25—C30—C11—C10 | −0.3 (2) | C1—N1—S1—O1 | −48.8 (5) |
C29—C30—C11—C10 | 178.2 (3) | C8—N1—S1—O1 | 170.8 (4) |
C25—C30—C11—C12 | −178.0 (2) | S1'—N1—S1—O1 | 62 (5) |
C29—C30—C11—C12 | 0.5 (5) | C1—N1—S1—O2 | 179.7 (5) |
C10—C11—C12—C7 | 0.6 (3) | C8—N1—S1—O2 | 39.3 (5) |
C30—C11—C12—C7 | 178.0 (2) | S1'—N1—S1—O2 | −70 (5) |
C10—C11—C12—C19 | −177.9 (2) | C1—N1—S1—C13 | 66.4 (3) |
C30—C11—C12—C19 | −0.5 (4) | C8—N1—S1—C13 | −74.0 (3) |
C11—C12—C7—C8 | −1.5 (3) | S1'—N1—S1—C13 | 177 (5) |
C19—C12—C7—C8 | 177.0 (2) | O1—S1—C13—C14 | −168.3 (6) |
C11—C12—C7—C6 | 174.7 (2) | O2—S1—C13—C14 | −37.0 (5) |
C19—C12—C7—C6 | −6.8 (4) | N1—S1—C13—C14 | 74.8 (3) |
C9—C8—C7—C12 | 1.7 (3) | O1—S1—C13—C18 | 15.2 (7) |
N1—C8—C7—C12 | 178.71 (19) | O2—S1—C13—C18 | 146.6 (6) |
C9—C8—C7—C6 | −175.3 (2) | N1—S1—C13—C18 | −101.7 (4) |
N1—C8—C7—C6 | 1.7 (2) | C18—C13—C14—C15 | 0.0 |
C12—C7—C6—C5 | −2.4 (5) | S1—C13—C14—C15 | −176.6 (5) |
C8—C7—C6—C5 | 174.2 (3) | C13—C14—C15—C16 | 0.0 |
C12—C7—C6—C1 | −178.3 (2) | C14—C15—C16—C17 | 0.0 |
C8—C7—C6—C1 | −1.8 (3) | C15—C16—C17—C18 | 0.0 |
C1—C6—C5—C4 | −1.2 (4) | C16—C17—C18—C13 | 0.0 |
C7—C6—C5—C4 | −176.8 (3) | C14—C13—C18—C17 | 0.0 |
C6—C5—C4—C3 | 0.2 (5) | S1—C13—C18—C17 | 176.3 (5) |
C5—C4—C3—C2 | 0.7 (5) | C1—N1—S1'—O2' | −175.6 (10) |
C4—C3—C2—C1 | −0.6 (5) | C8—N1—S1'—O2' | 38.5 (11) |
C3—C2—C1—C6 | −0.4 (4) | S1—N1—S1'—O2' | 112 (6) |
C3—C2—C1—N1 | 175.6 (2) | C1—N1—S1'—O1' | −47.6 (11) |
C5—C6—C1—C2 | 1.3 (4) | C8—N1—S1'—O1' | 166.5 (10) |
C7—C6—C1—C2 | 177.9 (2) | S1—N1—S1'—O1' | −120 (6) |
C5—C6—C1—N1 | −175.4 (2) | C1—N1—S1'—C13' | 68.1 (8) |
C7—C6—C1—N1 | 1.2 (3) | C8—N1—S1'—C13' | −77.8 (8) |
C7—C12—C19—C24 | −72.6 (3) | S1—N1—S1'—C13' | −4 (5) |
C11—C12—C19—C24 | 105.9 (3) | O2'—S1'—C13'—C14' | −51.1 (13) |
C7—C12—C19—C20 | 109.0 (3) | O1'—S1'—C13'—C14' | 171.2 (15) |
C11—C12—C19—C20 | −72.6 (3) | N1—S1'—C13'—C14' | 63.7 (11) |
C24—C19—C20—C21 | 1.0 (4) | O2'—S1'—C13'—C18' | 124.6 (12) |
C12—C19—C20—C21 | 179.5 (3) | O1'—S1'—C13'—C18' | −13.0 (17) |
C19—C20—C21—C22 | −1.5 (4) | N1—S1'—C13'—C18' | −120.5 (9) |
C20—C21—C22—C23 | 0.9 (5) | C18'—C13'—C14'—C15' | 0.0 |
C20—C21—C22—N2 | 179.5 (3) | S1'—C13'—C14'—C15' | 175.5 (12) |
C21—C22—C23—C24 | 0.0 (5) | C13'—C14'—C15'—C16' | 0.0 |
N2—C22—C23—C24 | −178.5 (3) | C14'—C15'—C16'—C17' | 0.0 |
C22—C23—C24—C19 | −0.5 (5) | C15'—C16'—C17'—C18' | 0.0 |
C20—C19—C24—C23 | 0.0 (4) | C16'—C17'—C18'—C13' | 0.0 |
C12—C19—C24—C23 | −178.5 (3) | C14'—C13'—C18'—C17' | 0.0 |
C2—C1—N1—C8 | −176.6 (2) | S1'—C13'—C18'—C17' | −176.0 (11) |
Cg1 is the centroid of the furan ring O5/C10/C11/C25/C30 and Cg3 is the centroid of the benzene ring C1–C6. |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2···O1 | 0.93 | 2.41 | 3.015 (9) | 122 |
C9—H9···O2 | 0.93 | 2.28 | 2.849 (9) | 119 |
C14—H14···O4i | 0.93 | 2.55 | 3.296 (7) | 138 |
C20—H20···O2ii | 0.93 | 2.53 | 3.454 (11) | 172 |
C16—H16···Cg1iii | 0.93 | 2.76 | 3.676 (6) | 169 |
C23—H23···Cg3iv | 0.93 | 2.99 | 3.908 (4) | 169 |
Symmetry codes: (i) x−1/2, −y+5/2, z−1/2; (ii) −x+1, −y+2, −z; (iii) −x, −y+2, −z; (iv) −x+1/2, y+1/2, −z+1/2. |
C27H18N2O4S2 | F(000) = 1032 |
Mr = 498.55 | Dx = 1.413 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 5100 reflections |
a = 12.5052 (8) Å | θ = 2.2–27.0° |
b = 11.2594 (6) Å | µ = 0.27 mm−1 |
c = 17.0731 (9) Å | T = 296 K |
β = 102.914 (2)° | Block, colourless |
V = 2343.1 (2) Å3 | 0.35 × 0.30 × 0.25 mm |
Z = 4 |
Bruker Kappa APEXII CCD diffractometer | 5100 independent reflections |
Radiation source: fine-focus sealed tube | 3714 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.034 |
ω & φ scans | θmax = 27.0°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −15→15 |
Tmin = 0.911, Tmax = 0.936 | k = −14→14 |
44472 measured reflections | l = −21→21 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.055 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.163 | H-atom parameters constrained |
S = 1.08 | w = 1/[σ2(Fo2) + (0.0625P)2 + 2.4597P] where P = (Fo2 + 2Fc2)/3 |
5100 reflections | (Δ/σ)max = 0.001 |
317 parameters | Δρmax = 0.44 e Å−3 |
0 restraints | Δρmin = −0.36 e Å−3 |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.6060 (2) | 0.1940 (2) | 0.88312 (17) | 0.0422 (6) | |
C2 | 0.5786 (3) | 0.2854 (3) | 0.8277 (2) | 0.0559 (8) | |
H2 | 0.5843 | 0.3645 | 0.8438 | 0.067* | |
C3 | 0.5428 (3) | 0.2548 (3) | 0.7482 (2) | 0.0630 (9) | |
H3 | 0.5242 | 0.3146 | 0.7100 | 0.076* | |
C4 | 0.5337 (3) | 0.1379 (3) | 0.7237 (2) | 0.0631 (9) | |
H4 | 0.5082 | 0.1203 | 0.6695 | 0.076* | |
C5 | 0.5616 (3) | 0.0466 (3) | 0.77821 (17) | 0.0508 (7) | |
H5 | 0.5562 | −0.0321 | 0.7612 | 0.061* | |
C6 | 0.5983 (2) | 0.0746 (2) | 0.85962 (16) | 0.0390 (6) | |
C7 | 0.6289 (2) | 0.0029 (2) | 0.93182 (15) | 0.0353 (5) | |
C8 | 0.6520 (2) | 0.0804 (2) | 0.99817 (16) | 0.0360 (6) | |
C9 | 0.6768 (2) | 0.0413 (2) | 1.07625 (16) | 0.0393 (6) | |
H9 | 0.6917 | 0.0937 | 1.1194 | 0.047* | |
C10 | 0.6786 (2) | −0.0812 (2) | 1.08733 (15) | 0.0380 (6) | |
C11 | 0.6568 (2) | −0.1622 (2) | 1.02287 (15) | 0.0353 (5) | |
C12 | 0.6333 (2) | −0.1197 (2) | 0.94342 (15) | 0.0350 (5) | |
C13 | 0.8439 (2) | 0.2964 (2) | 0.98979 (16) | 0.0444 (6) | |
C14 | 0.9114 (3) | 0.2047 (3) | 1.02414 (18) | 0.0523 (7) | |
H14 | 0.8886 | 0.1523 | 1.0593 | 0.063* | |
C15 | 1.0124 (3) | 0.1910 (4) | 1.0062 (2) | 0.0681 (9) | |
H15 | 1.0579 | 0.1287 | 1.0286 | 0.082* | |
C16 | 1.0456 (3) | 0.2685 (5) | 0.9557 (3) | 0.0829 (12) | |
H16 | 1.1145 | 0.2595 | 0.9443 | 0.100* | |
C17 | 0.9798 (4) | 0.3594 (5) | 0.9214 (3) | 0.0949 (15) | |
H17 | 1.0039 | 0.4117 | 0.8869 | 0.114* | |
C18 | 0.8765 (3) | 0.3742 (4) | 0.9378 (2) | 0.0735 (11) | |
H18 | 0.8307 | 0.4354 | 0.9141 | 0.088* | |
C19 | 0.6151 (2) | −0.2052 (2) | 0.87505 (15) | 0.0354 (5) | |
C20 | 0.5183 (2) | −0.2687 (3) | 0.85455 (19) | 0.0537 (8) | |
H20 | 0.4651 | −0.2592 | 0.8844 | 0.064* | |
C21 | 0.4998 (3) | −0.3460 (3) | 0.7902 (2) | 0.0554 (8) | |
H21 | 0.4339 | −0.3872 | 0.7755 | 0.067* | |
C22 | 0.5802 (2) | −0.3609 (2) | 0.74852 (16) | 0.0430 (6) | |
C23 | 0.6776 (3) | −0.3019 (3) | 0.7681 (2) | 0.0584 (8) | |
H23 | 0.7316 | −0.3145 | 0.7393 | 0.070* | |
C24 | 0.6946 (2) | −0.2227 (3) | 0.83158 (19) | 0.0531 (8) | |
H24 | 0.7602 | −0.1808 | 0.8452 | 0.064* | |
C25 | 0.6646 (2) | −0.2867 (2) | 1.05076 (15) | 0.0384 (6) | |
H25 | 0.6526 | −0.3528 | 1.0173 | 0.046* | |
C26 | 0.6920 (3) | −0.2909 (2) | 1.13271 (18) | 0.0481 (7) | |
C27 | 0.7108 (4) | −0.4006 (3) | 1.1839 (2) | 0.0753 (11) | |
H27A | 0.6928 | −0.4695 | 1.1504 | 0.113* | |
H27B | 0.6651 | −0.3981 | 1.2222 | 0.113* | |
H27C | 0.7864 | −0.4044 | 1.2118 | 0.113* | |
N1 | 0.63886 (18) | 0.19995 (19) | 0.96867 (14) | 0.0411 (5) | |
N2 | 0.5598 (3) | −0.4437 (2) | 0.68029 (16) | 0.0575 (7) | |
O1 | 0.6654 (2) | 0.41840 (18) | 0.97873 (17) | 0.0737 (7) | |
O2 | 0.7283 (2) | 0.29254 (19) | 1.09819 (13) | 0.0611 (6) | |
O3 | 0.6358 (2) | −0.4681 (3) | 0.64953 (16) | 0.0853 (9) | |
O4 | 0.4680 (2) | −0.4842 (2) | 0.65745 (15) | 0.0765 (8) | |
S1 | 0.71501 (6) | 0.31228 (6) | 1.01429 (5) | 0.0488 (2) | |
S2 | 0.70682 (7) | −0.15330 (7) | 1.17880 (5) | 0.0541 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0382 (14) | 0.0378 (14) | 0.0513 (16) | 0.0023 (11) | 0.0117 (12) | 0.0048 (12) |
C2 | 0.0580 (19) | 0.0376 (15) | 0.070 (2) | 0.0046 (14) | 0.0099 (16) | 0.0134 (14) |
C3 | 0.068 (2) | 0.056 (2) | 0.062 (2) | 0.0058 (16) | 0.0080 (17) | 0.0246 (16) |
C4 | 0.076 (2) | 0.064 (2) | 0.0454 (17) | 0.0001 (18) | 0.0045 (16) | 0.0116 (15) |
C5 | 0.0608 (19) | 0.0445 (16) | 0.0440 (16) | −0.0026 (14) | 0.0049 (14) | 0.0012 (13) |
C6 | 0.0371 (14) | 0.0362 (13) | 0.0443 (15) | −0.0005 (11) | 0.0102 (11) | 0.0033 (11) |
C7 | 0.0329 (13) | 0.0343 (13) | 0.0390 (13) | −0.0026 (10) | 0.0084 (10) | −0.0021 (10) |
C8 | 0.0336 (13) | 0.0288 (12) | 0.0467 (15) | −0.0012 (10) | 0.0113 (11) | −0.0034 (10) |
C9 | 0.0426 (14) | 0.0371 (14) | 0.0381 (14) | −0.0032 (11) | 0.0088 (11) | −0.0078 (11) |
C10 | 0.0356 (13) | 0.0427 (14) | 0.0361 (14) | −0.0020 (11) | 0.0085 (11) | −0.0002 (11) |
C11 | 0.0311 (13) | 0.0346 (13) | 0.0407 (14) | −0.0019 (10) | 0.0090 (10) | −0.0003 (10) |
C12 | 0.0323 (13) | 0.0332 (13) | 0.0397 (13) | −0.0031 (10) | 0.0087 (10) | −0.0028 (10) |
C13 | 0.0502 (16) | 0.0416 (15) | 0.0404 (14) | −0.0121 (12) | 0.0083 (12) | −0.0014 (12) |
C14 | 0.0515 (18) | 0.0549 (18) | 0.0494 (17) | −0.0044 (14) | 0.0086 (14) | 0.0041 (14) |
C15 | 0.0486 (19) | 0.083 (3) | 0.069 (2) | 0.0032 (18) | 0.0053 (16) | 0.004 (2) |
C16 | 0.053 (2) | 0.120 (4) | 0.078 (3) | −0.009 (2) | 0.0188 (19) | 0.008 (3) |
C17 | 0.081 (3) | 0.127 (4) | 0.083 (3) | −0.025 (3) | 0.033 (2) | 0.037 (3) |
C18 | 0.068 (2) | 0.072 (2) | 0.077 (2) | −0.0113 (19) | 0.0093 (19) | 0.031 (2) |
C19 | 0.0390 (14) | 0.0305 (12) | 0.0373 (13) | −0.0020 (10) | 0.0095 (11) | −0.0005 (10) |
C20 | 0.0455 (16) | 0.0565 (18) | 0.0640 (19) | −0.0130 (14) | 0.0229 (14) | −0.0197 (15) |
C21 | 0.0454 (17) | 0.0556 (18) | 0.065 (2) | −0.0183 (14) | 0.0112 (14) | −0.0174 (15) |
C22 | 0.0514 (16) | 0.0332 (13) | 0.0427 (15) | 0.0001 (12) | 0.0073 (12) | −0.0086 (11) |
C23 | 0.0526 (18) | 0.067 (2) | 0.0615 (19) | −0.0067 (15) | 0.0251 (15) | −0.0215 (16) |
C24 | 0.0452 (16) | 0.0558 (18) | 0.0626 (19) | −0.0183 (14) | 0.0215 (14) | −0.0202 (15) |
C25 | 0.0373 (14) | 0.0386 (14) | 0.0404 (14) | 0.0032 (11) | 0.0111 (11) | 0.0083 (11) |
C26 | 0.0526 (17) | 0.0402 (15) | 0.0526 (17) | 0.0009 (13) | 0.0141 (14) | 0.0086 (13) |
C27 | 0.107 (3) | 0.054 (2) | 0.067 (2) | 0.007 (2) | 0.024 (2) | 0.0234 (17) |
N1 | 0.0430 (13) | 0.0302 (11) | 0.0495 (13) | −0.0007 (9) | 0.0090 (10) | −0.0027 (9) |
N2 | 0.0718 (19) | 0.0405 (14) | 0.0556 (16) | 0.0054 (13) | 0.0043 (14) | −0.0111 (12) |
O1 | 0.0785 (17) | 0.0302 (11) | 0.110 (2) | 0.0068 (11) | 0.0148 (14) | −0.0106 (12) |
O2 | 0.0765 (15) | 0.0538 (13) | 0.0603 (13) | −0.0182 (11) | 0.0305 (11) | −0.0233 (11) |
O3 | 0.091 (2) | 0.089 (2) | 0.0765 (17) | 0.0123 (16) | 0.0200 (15) | −0.0388 (15) |
O4 | 0.0852 (19) | 0.0571 (15) | 0.0761 (17) | −0.0124 (13) | −0.0053 (14) | −0.0266 (12) |
S1 | 0.0555 (5) | 0.0302 (3) | 0.0627 (5) | −0.0035 (3) | 0.0172 (4) | −0.0106 (3) |
S2 | 0.0642 (5) | 0.0521 (5) | 0.0442 (4) | −0.0033 (4) | 0.0081 (4) | 0.0038 (3) |
C1—C2 | 1.388 (4) | C15—H15 | 0.9300 |
C1—C6 | 1.400 (4) | C16—C17 | 1.361 (6) |
C1—N1 | 1.428 (4) | C16—H16 | 0.9300 |
C2—C3 | 1.374 (5) | C17—C18 | 1.391 (6) |
C2—H2 | 0.9300 | C17—H17 | 0.9300 |
C3—C4 | 1.379 (5) | C18—H18 | 0.9300 |
C3—H3 | 0.9300 | C19—C24 | 1.381 (4) |
C4—C5 | 1.378 (4) | C19—C20 | 1.382 (4) |
C4—H4 | 0.9300 | C20—C21 | 1.381 (4) |
C5—C6 | 1.399 (4) | C20—H20 | 0.9300 |
C5—H5 | 0.9300 | C21—C22 | 1.365 (4) |
C6—C7 | 1.452 (4) | C21—H21 | 0.9300 |
C7—C12 | 1.394 (3) | C22—C23 | 1.363 (4) |
C7—C8 | 1.408 (3) | C22—N2 | 1.469 (4) |
C8—C9 | 1.372 (4) | C23—C24 | 1.383 (4) |
C8—N1 | 1.434 (3) | C23—H23 | 0.9300 |
C9—C10 | 1.391 (4) | C24—H24 | 0.9300 |
C9—H9 | 0.9300 | C25—C26 | 1.365 (4) |
C10—C11 | 1.408 (4) | C25—H25 | 0.9300 |
C10—S2 | 1.725 (3) | C26—C27 | 1.501 (4) |
C11—C12 | 1.406 (4) | C26—S2 | 1.729 (3) |
C11—C25 | 1.477 (3) | C27—H27A | 0.9600 |
C12—C19 | 1.491 (3) | C27—H27B | 0.9600 |
C13—C18 | 1.372 (4) | C27—H27C | 0.9600 |
C13—C14 | 1.379 (4) | N1—S1 | 1.668 (2) |
C13—S1 | 1.762 (3) | N2—O4 | 1.216 (4) |
C14—C15 | 1.374 (5) | N2—O3 | 1.216 (4) |
C14—H14 | 0.9300 | O1—S1 | 1.419 (2) |
C15—C16 | 1.356 (6) | O2—S1 | 1.422 (2) |
C2—C1—C6 | 121.7 (3) | C16—C17—H17 | 119.9 |
C2—C1—N1 | 129.3 (3) | C18—C17—H17 | 119.9 |
C6—C1—N1 | 108.9 (2) | C13—C18—C17 | 118.6 (4) |
C3—C2—C1 | 117.7 (3) | C13—C18—H18 | 120.7 |
C3—C2—H2 | 121.2 | C17—C18—H18 | 120.7 |
C1—C2—H2 | 121.2 | C24—C19—C20 | 119.0 (2) |
C2—C3—C4 | 121.7 (3) | C24—C19—C12 | 120.7 (2) |
C2—C3—H3 | 119.2 | C20—C19—C12 | 120.2 (2) |
C4—C3—H3 | 119.2 | C21—C20—C19 | 120.6 (3) |
C5—C4—C3 | 121.1 (3) | C21—C20—H20 | 119.7 |
C5—C4—H4 | 119.5 | C19—C20—H20 | 119.7 |
C3—C4—H4 | 119.5 | C22—C21—C20 | 118.7 (3) |
C4—C5—C6 | 118.7 (3) | C22—C21—H21 | 120.6 |
C4—C5—H5 | 120.7 | C20—C21—H21 | 120.6 |
C6—C5—H5 | 120.7 | C23—C22—C21 | 122.3 (3) |
C5—C6—C1 | 119.2 (3) | C23—C22—N2 | 119.4 (3) |
C5—C6—C7 | 133.1 (3) | C21—C22—N2 | 118.3 (3) |
C1—C6—C7 | 107.6 (2) | C22—C23—C24 | 118.6 (3) |
C12—C7—C8 | 120.3 (2) | C22—C23—H23 | 120.7 |
C12—C7—C6 | 131.8 (2) | C24—C23—H23 | 120.7 |
C8—C7—C6 | 107.8 (2) | C19—C24—C23 | 120.7 (3) |
C9—C8—C7 | 123.0 (2) | C19—C24—H24 | 119.6 |
C9—C8—N1 | 128.7 (2) | C23—C24—H24 | 119.6 |
C7—C8—N1 | 108.2 (2) | C26—C25—C11 | 110.3 (2) |
C8—C9—C10 | 116.3 (2) | C26—C25—H25 | 124.9 |
C8—C9—H9 | 121.8 | C11—C25—H25 | 124.9 |
C10—C9—H9 | 121.8 | C25—C26—C27 | 126.6 (3) |
C9—C10—C11 | 122.8 (2) | C25—C26—S2 | 114.4 (2) |
C9—C10—S2 | 125.7 (2) | C27—C26—S2 | 119.1 (2) |
C11—C10—S2 | 111.5 (2) | C26—C27—H27A | 109.5 |
C12—C11—C10 | 119.7 (2) | C26—C27—H27B | 109.5 |
C12—C11—C25 | 128.2 (2) | H27A—C27—H27B | 109.5 |
C10—C11—C25 | 112.1 (2) | C26—C27—H27C | 109.5 |
C7—C12—C11 | 117.8 (2) | H27A—C27—H27C | 109.5 |
C7—C12—C19 | 122.3 (2) | H27B—C27—H27C | 109.5 |
C11—C12—C19 | 119.9 (2) | C1—N1—C8 | 107.4 (2) |
C18—C13—C14 | 120.7 (3) | C1—N1—S1 | 121.13 (18) |
C18—C13—S1 | 120.6 (3) | C8—N1—S1 | 122.65 (18) |
C14—C13—S1 | 118.7 (2) | O4—N2—O3 | 123.3 (3) |
C15—C14—C13 | 119.7 (3) | O4—N2—C22 | 118.4 (3) |
C15—C14—H14 | 120.2 | O3—N2—C22 | 118.2 (3) |
C13—C14—H14 | 120.2 | O1—S1—O2 | 120.27 (15) |
C16—C15—C14 | 119.8 (4) | O1—S1—N1 | 106.83 (14) |
C16—C15—H15 | 120.1 | O2—S1—N1 | 106.12 (12) |
C14—C15—H15 | 120.1 | O1—S1—C13 | 108.62 (15) |
C15—C16—C17 | 121.0 (4) | O2—S1—C13 | 108.44 (14) |
C15—C16—H16 | 119.5 | N1—S1—C13 | 105.62 (12) |
C17—C16—H16 | 119.5 | C10—S2—C26 | 91.74 (14) |
C16—C17—C18 | 120.2 (4) | ||
C6—C1—C2—C3 | 0.3 (5) | C7—C12—C19—C20 | −106.1 (3) |
N1—C1—C2—C3 | −175.9 (3) | C11—C12—C19—C20 | 74.5 (3) |
C1—C2—C3—C4 | 0.2 (5) | C24—C19—C20—C21 | −1.8 (5) |
C2—C3—C4—C5 | −0.8 (6) | C12—C19—C20—C21 | 178.5 (3) |
C3—C4—C5—C6 | 0.9 (5) | C19—C20—C21—C22 | 1.7 (5) |
C4—C5—C6—C1 | −0.3 (4) | C20—C21—C22—C23 | −0.3 (5) |
C4—C5—C6—C7 | 176.7 (3) | C20—C21—C22—N2 | 179.8 (3) |
C2—C1—C6—C5 | −0.3 (4) | C21—C22—C23—C24 | −1.0 (5) |
N1—C1—C6—C5 | 176.7 (2) | N2—C22—C23—C24 | 178.8 (3) |
C2—C1—C6—C7 | −178.0 (3) | C20—C19—C24—C23 | 0.4 (5) |
N1—C1—C6—C7 | −1.0 (3) | C12—C19—C24—C23 | −179.9 (3) |
C5—C6—C7—C12 | 1.2 (5) | C22—C23—C24—C19 | 1.0 (5) |
C1—C6—C7—C12 | 178.4 (3) | C12—C11—C25—C26 | 178.4 (3) |
C5—C6—C7—C8 | −175.8 (3) | C10—C11—C25—C26 | −0.4 (3) |
C1—C6—C7—C8 | 1.5 (3) | C11—C25—C26—C27 | −178.2 (3) |
C12—C7—C8—C9 | −1.6 (4) | C11—C25—C26—S2 | 1.0 (3) |
C6—C7—C8—C9 | 175.7 (2) | C2—C1—N1—C8 | 176.8 (3) |
C12—C7—C8—N1 | −178.7 (2) | C6—C1—N1—C8 | 0.2 (3) |
C6—C7—C8—N1 | −1.4 (3) | C2—C1—N1—S1 | −34.9 (4) |
C7—C8—C9—C10 | 0.1 (4) | C6—C1—N1—S1 | 148.4 (2) |
N1—C8—C9—C10 | 176.6 (2) | C9—C8—N1—C1 | −176.1 (3) |
C8—C9—C10—C11 | 0.3 (4) | C7—C8—N1—C1 | 0.7 (3) |
C8—C9—C10—S2 | −179.7 (2) | C9—C8—N1—S1 | 36.2 (4) |
C9—C10—C11—C12 | 0.7 (4) | C7—C8—N1—S1 | −146.90 (19) |
S2—C10—C11—C12 | −179.24 (19) | C23—C22—N2—O4 | −170.9 (3) |
C9—C10—C11—C25 | 179.6 (2) | C21—C22—N2—O4 | 9.0 (4) |
S2—C10—C11—C25 | −0.3 (3) | C23—C22—N2—O3 | 9.1 (4) |
C8—C7—C12—C11 | 2.5 (4) | C21—C22—N2—O3 | −171.0 (3) |
C6—C7—C12—C11 | −174.1 (3) | C1—N1—S1—O1 | 48.2 (2) |
C8—C7—C12—C19 | −176.8 (2) | C8—N1—S1—O1 | −168.5 (2) |
C6—C7—C12—C19 | 6.6 (4) | C1—N1—S1—O2 | 177.6 (2) |
C10—C11—C12—C7 | −2.1 (4) | C8—N1—S1—O2 | −39.0 (2) |
C25—C11—C12—C7 | 179.2 (2) | C1—N1—S1—C13 | −67.3 (2) |
C10—C11—C12—C19 | 177.3 (2) | C8—N1—S1—C13 | 76.0 (2) |
C25—C11—C12—C19 | −1.4 (4) | C18—C13—S1—O1 | −5.6 (3) |
C18—C13—C14—C15 | 0.0 (5) | C14—C13—S1—O1 | 174.2 (2) |
S1—C13—C14—C15 | −179.7 (3) | C18—C13—S1—O2 | −137.9 (3) |
C13—C14—C15—C16 | 0.8 (5) | C14—C13—S1—O2 | 41.9 (3) |
C14—C15—C16—C17 | −0.8 (7) | C18—C13—S1—N1 | 108.7 (3) |
C15—C16—C17—C18 | 0.0 (7) | C14—C13—S1—N1 | −71.5 (3) |
C14—C13—C18—C17 | −0.9 (6) | C9—C10—S2—C26 | −179.2 (3) |
S1—C13—C18—C17 | 178.9 (3) | C11—C10—S2—C26 | 0.8 (2) |
C16—C17—C18—C13 | 0.8 (7) | C25—C26—S2—C10 | −1.1 (2) |
C7—C12—C19—C24 | 74.2 (4) | C27—C26—S2—C10 | 178.2 (3) |
C11—C12—C19—C24 | −105.2 (3) |
Cg1 is the centroid of the thiophene ring S2/C10/C11/C25/C26 and Cg3 is centroid of the benzene ring C1–C6. |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2···O1 | 0.93 | 2.38 | 2.970 (4) | 121 |
C9—H9···O2 | 0.93 | 2.33 | 2.907 (3) | 120 |
C3—H3···O4i | 0.93 | 2.48 | 3.356 (4) | 157 |
C14—H14···O4ii | 0.93 | 2.58 | 3.335 (4) | 139 |
C20—H20···O2iii | 0.93 | 2.53 | 3.368 (5) | 150 |
C16—H16···Cg1iv | 0.93 | 2.89 | 3.812 (4) | 172 |
C23—H23···Cg3v | 0.93 | 2.75 | 3.646 (4) | 163 |
Symmetry codes: (i) x, y+1, z; (ii) x+1/2, −y−1/2, z+1/2; (iii) −x+1, −y, −z+2; (iv) −x+2, −y, −z+2; (v) −x+3/2, y−1/2, −z+3/2. |
Acknowledgements
The authors thank Dr Jagan and Dr Babu Varghese, Senior Scientific Officer, SAIF, IIT Madras, Chennai, India, for the data collection.
References
Bassindale, A. (1984). The Third Dimension in Organic Chemistry, ch. 1, p. 11. New York: John Wiley and Sons. Google Scholar
Bruker (2008). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854. Web of Science CrossRef CAS IUCr Journals Google Scholar
Friend, R. H., Gymer, R. W., Holmes, A. B., Burroughes, J. H., Marks, R. N., Taliani, C., Bradley, D. D. C., Dos Santos, D. A., Brédas, J. L., Lögdlund, M. & Salaneck, W. R. (1999). Nature, 397, 121–128. Web of Science CrossRef CAS Google Scholar
Groom, C. R., Bruno, I. J., Lightfoot, M. P. & Ward, S. C. (2016). Acta Cryst. B72, 171–179. Web of Science CSD CrossRef IUCr Journals Google Scholar
Itoigawa, M., Kashiwada, Y., Ito, C., Furukawa, H., Tachibana, Y., Bastow, K. F. & Lee, K. H. (2000). J. Nat. Prod. 63, 893–897. Web of Science CrossRef PubMed CAS Google Scholar
Macrae, C. F., Bruno, I. J., Chisholm, J. A., Edgington, P. R., McCabe, P., Pidcock, E., Rodriguez-Monge, L., Taylor, R., van de Streek, J. & Wood, P. A. (2008). J. Appl. Cryst. 41, 466–470. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Panchatcharam, R., Dhayalan, V., Mohanakrishnan, A. K., Chakkaravarthi, G. & Manivannan, V. (2011). Acta Cryst. E67, o2829. Web of Science CSD CrossRef IUCr Journals Google Scholar
Ramsewak, R. S., Nair, M. G., Strasburg, G. M., DeWitt, D. L. & Nitiss, J. L. (1999). J. Agric. Food Chem. 47, 444–447. Web of Science CrossRef PubMed CAS Google Scholar
Sacak, M. (1999). J. Appl. Polym. Sci. 74, 1792–1796. CAS Google Scholar
Santhanam, K. S. V. & Sundaresan, N. S. (1986). Indian J. Technol. 24, 417–422. CAS Google Scholar
Saxton, J. E. (1983). Editor. Heterocyclic Compounds, Vol. 25, The Monoterpenoid Indole Alkaloids, ch. 8 and 11. New York: Wiley. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
Sureshbabu, R., Saravanan, V., Dhayalan, V. & Mohanakrishnan, A. K. (2011). Eur. J. Org. Chem. 922–935. Google Scholar
Tachibana, Y., Kikuzaki, H., Lajis, N. H. & Nakatani, N. (2001). J. Agric. Food Chem. 49, 5589–5594. Web of Science CrossRef PubMed CAS Google Scholar
Zhang, Q., Chen, J., Cheng, Y., Wang, L., Ma, D., Jing, X. & Wang, F. (2004). J. Mater. Chem. 14, 895–900. Web of Science CrossRef CAS Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.