organic compounds
N-(3-benzoyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)benzamide
ofaDepartment of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore 570 006, India, bDepartment of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA, and cMaterials Science Center, University of Mysore, Vijyana Bhavan Building, Manasagangothri, Mysore-570 006, India
*Correspondence e-mail: jjasinski@keene.edu
In the title compound, C22H19NO2S, the cyclohexene ring adopts a half-chair conformation. The dihedral angles between the plane of the thiophene ring and those of its amide- and carbonyl-bonded benzene rings are 7.1 (1) and 59.0 (2)°, respectively. An intramolecular N—H⋯O hydrogen bond generates an S(6) ring. In the crystal, very weak aromatic π–π stacking interactions [centroid–centroid separation = 3.9009 (10) Å] are observed.
Keywords: crystal structure; hydrogen bonding; π–π stacking interactions; benzamide; 1-benzothiophene; 2-aminothiophene derivatives.
CCDC reference: 1015542
1. Related literature
For applications of 2-aminothiophene derivatives, see: Sabnis et al. (1999); Puterová et al. (2010); Cannito et al. (1990); Nikolakopoulos et al. (2006); Lütjens et al. (2005). For a related structure, see: Kubicki et al. (2012).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: CrysAlis PRO (Agilent, 2012); cell CrysAlis PRO; data reduction: CrysAlis RED (Agilent, 2012); program(s) used to solve structure: SUPERFLIP (Palatinus & Chapuis, 2007); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2.
Supporting information
CCDC reference: 1015542
10.1107/S1600536814016948/hb7258sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814016948/hb7258Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814016948/hb7258Isup3.cml
2-Aminothiophene derivatives have been used in a number of applications in pesticides, dyes andpharmaceuticals. Reviews on the synthesis and properties of these compounds have been reported (Sabnis et al., 1999; Puterová et al., 2010). Substituted 2-aminothiophenes are active as allosteric enhancers at the human A1 adenosine receptor (Cannito et al.,1990; Nikolakopoulos et al., 2006; Lütjens et al., 2005). The crystal and molecular structures of two 2-aminothiphenes have been previously reported by our group (Kubicki et al., 2012). In continuation of our work on derivatives of 2-aminothiophenes, we report herin the
of the title compound, (I).In (I), the cyclohexene ring adopts an θ, and ϕ = 0.5098 (19)Å, 126.7 (2)° and 322.2 (2)°, respectively) (Fig. 1). The dihedral angles between the mean planes of the thiophene ring and phenyl rings are 7.1 (1)° and 59.0 (2)°. The phenyl rings are twisted with respect to each other by 54.1 (1)°. A short N1—H1···O1 intramolecular hydrogen bond is observed. In addition, weak Cg–Cg π–π intermolecular interactions are present (Cg1–Cg3 : 3.9009 (10)Å; x,1+y,z; Cg1: S1/C8/C3/C2/C9 and Cg3: C11–C16)(Fig 2).
(puckering parameters Q,To a solution of benzoic acid (200 mg, 1.64 mmol) in dichloromethane (10 ml) was added 1-(3-dimethylaminopropyl)-3-ethylcarbodimidide (377.26 mg, 1.968 mmol), triethylamine (0.7 ml, 4.92 mmol) and stirred for 20 mins over a magnetic stirrer at room temperature. A solution of (2-Amino-4,5,6,7-tetrahydro-benzo[b]thiophen-3-yl)- phenyl-methanone (200 mg, 1.64 mmol) in 5 ml of dichloromethane was added to the above reaction mixture and continued stirring overnight at room temperature. The reaction completion was confirmed by thin layer
The reaction mixture was quenched with water and extracted with dichloromethane. The organic layers were separated, dried over anhydrous sodium sulphate and concentrated. The crude product was purified using silica gel (60:120 mesh) using 20% ethylacetate in hexane. The column fractions for the title compound were left to evaporate in open air affording yellow blocks.Crystal data, data collection and structure
details are summarized in Table 1. All of the H atoms were placed in their calculated positions and then refined using the riding model with Atom—H lengths of 0.93Å (CH); 0.97Å (CH2) or 0.86Å (NH). Isotropic displacement parameters for these atoms were set to 1.2 (CH, CH2) times Ueq of the parent atom.Data collection: CrysAlis PRO (Agilent, 2012); cell
CrysAlis PRO (Agilent, 2012); data reduction: CrysAlis RED (Agilent, 2012); program(s) used to solve structure: SUPERFLIP (Palatinus & Chapuis, 2007); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2 (Dolomanov et al., 2009).C22H19NO2S | F(000) = 760 |
Mr = 361.44 | Dx = 1.330 Mg m−3 |
Monoclinic, P21/c | Cu Kα radiation, λ = 1.54184 Å |
a = 13.5223 (4) Å | Cell parameters from 5029 reflections |
b = 6.23222 (15) Å | θ = 4.1–71.5° |
c = 22.2941 (6) Å | µ = 1.72 mm−1 |
β = 106.150 (3)° | T = 173 K |
V = 1804.66 (9) Å3 | Rod, yellow |
Z = 4 | 0.24 × 0.22 × 0.12 mm |
Agilent Eos Gemini diffractometer | 3467 independent reflections |
Radiation source: Enhance (Cu) X-ray Source | 3049 reflections with I > 2σ(I) |
Detector resolution: 16.0416 pixels mm-1 | Rint = 0.031 |
ω scans | θmax = 71.2°, θmin = 4.1° |
Absorption correction: multi-scan (CrysAlis RED; Agilent, 2012) | h = −16→16 |
Tmin = 0.698, Tmax = 1.000 | k = −7→7 |
11346 measured reflections | l = −18→26 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.037 | H-atom parameters constrained |
wR(F2) = 0.105 | w = 1/[σ2(Fo2) + (0.0622P)2 + 0.3587P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.001 |
3467 reflections | Δρmax = 0.28 e Å−3 |
235 parameters | Δρmin = −0.24 e Å−3 |
0 restraints |
C22H19NO2S | V = 1804.66 (9) Å3 |
Mr = 361.44 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 13.5223 (4) Å | µ = 1.72 mm−1 |
b = 6.23222 (15) Å | T = 173 K |
c = 22.2941 (6) Å | 0.24 × 0.22 × 0.12 mm |
β = 106.150 (3)° |
Agilent Eos Gemini diffractometer | 3467 independent reflections |
Absorption correction: multi-scan (CrysAlis RED; Agilent, 2012) | 3049 reflections with I > 2σ(I) |
Tmin = 0.698, Tmax = 1.000 | Rint = 0.031 |
11346 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | 0 restraints |
wR(F2) = 0.105 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.28 e Å−3 |
3467 reflections | Δρmin = −0.24 e Å−3 |
235 parameters |
Experimental. 1H NMR (400 MHz, CDCl3): δ 12.60 (s, 1H), 8.04-8.02 (m, 2H), 7.57-7.54 (m, 3H), 7.52-7.42 (m, 5H), 2.72-2.69 (m, 2H), 1.96-1.93 (m, 2H), 1.79-1.76 (m, 2H), 1.54-1.51 (m, 2H). MS: m/z = 361.11 (Calculated), m/z = 361.977 [M]+ (found). |
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. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.69329 (3) | 0.62586 (6) | 0.30922 (2) | 0.02882 (13) | |
O1 | 0.75720 (10) | 0.27477 (18) | 0.49345 (5) | 0.0410 (3) | |
O2 | 0.81305 (10) | 0.2921 (2) | 0.28522 (5) | 0.0435 (3) | |
N1 | 0.79387 (10) | 0.2983 (2) | 0.38260 (6) | 0.0292 (3) | |
H1 | 0.8088 | 0.2330 | 0.4180 | 0.035* | |
C1 | 0.73063 (11) | 0.4651 (2) | 0.48717 (7) | 0.0283 (3) | |
C2 | 0.69969 (11) | 0.5657 (2) | 0.42510 (6) | 0.0256 (3) | |
C3 | 0.63392 (11) | 0.7496 (2) | 0.40467 (6) | 0.0259 (3) | |
C4 | 0.56991 (12) | 0.8644 (3) | 0.44032 (7) | 0.0318 (3) | |
H4A | 0.6125 | 0.9671 | 0.4688 | 0.038* | |
H4B | 0.5438 | 0.7614 | 0.4648 | 0.038* | |
C5 | 0.47979 (12) | 0.9811 (3) | 0.39537 (8) | 0.0363 (4) | |
H5A | 0.4299 | 0.8768 | 0.3729 | 0.044* | |
H5B | 0.4462 | 1.0725 | 0.4190 | 0.044* | |
C6 | 0.51630 (13) | 1.1166 (3) | 0.34902 (8) | 0.0350 (4) | |
H6A | 0.5687 | 1.2161 | 0.3715 | 0.042* | |
H6B | 0.4590 | 1.1995 | 0.3238 | 0.042* | |
C7 | 0.56026 (12) | 0.9761 (3) | 0.30670 (7) | 0.0340 (3) | |
H7A | 0.5044 | 0.9144 | 0.2741 | 0.041* | |
H7B | 0.6020 | 1.0629 | 0.2870 | 0.041* | |
C8 | 0.62504 (11) | 0.7993 (2) | 0.34390 (7) | 0.0280 (3) | |
C9 | 0.73396 (11) | 0.4801 (2) | 0.37706 (6) | 0.0263 (3) | |
C10 | 0.83182 (12) | 0.2120 (2) | 0.33703 (7) | 0.0311 (3) | |
C11 | 0.89548 (11) | 0.0141 (2) | 0.35530 (7) | 0.0309 (3) | |
C12 | 0.92489 (13) | −0.0932 (3) | 0.30829 (9) | 0.0428 (4) | |
H12 | 0.9074 | −0.0374 | 0.2680 | 0.051* | |
C13 | 0.97989 (15) | −0.2821 (4) | 0.32123 (11) | 0.0562 (6) | |
H13 | 0.9989 | −0.3531 | 0.2895 | 0.067* | |
C14 | 1.00688 (14) | −0.3666 (3) | 0.38033 (12) | 0.0549 (6) | |
H14 | 1.0436 | −0.4945 | 0.3886 | 0.066* | |
C15 | 0.97916 (15) | −0.2603 (3) | 0.42765 (10) | 0.0485 (4) | |
H15 | 0.9978 | −0.3162 | 0.4679 | 0.058* | |
C16 | 0.92373 (14) | −0.0708 (3) | 0.41529 (8) | 0.0391 (4) | |
H16 | 0.9053 | 0.0000 | 0.4473 | 0.047* | |
C17 | 0.73787 (11) | 0.5924 (2) | 0.54473 (6) | 0.0259 (3) | |
C18 | 0.77860 (11) | 0.7983 (2) | 0.55156 (7) | 0.0278 (3) | |
H18 | 0.7922 | 0.8668 | 0.5177 | 0.033* | |
C19 | 0.79904 (12) | 0.9025 (3) | 0.60861 (7) | 0.0332 (3) | |
H19 | 0.8278 | 1.0392 | 0.6131 | 0.040* | |
C20 | 0.77683 (13) | 0.8037 (3) | 0.65883 (7) | 0.0375 (4) | |
H20 | 0.7900 | 0.8742 | 0.6970 | 0.045* | |
C21 | 0.73484 (13) | 0.5988 (3) | 0.65215 (7) | 0.0382 (4) | |
H21 | 0.7191 | 0.5331 | 0.6858 | 0.046* | |
C22 | 0.71632 (12) | 0.4922 (3) | 0.59591 (7) | 0.0314 (3) | |
H22 | 0.6895 | 0.3539 | 0.5920 | 0.038* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0315 (2) | 0.0324 (2) | 0.02130 (19) | 0.00008 (14) | 0.00527 (14) | 0.00048 (13) |
O1 | 0.0672 (8) | 0.0240 (6) | 0.0324 (6) | 0.0068 (5) | 0.0152 (5) | 0.0042 (4) |
O2 | 0.0592 (8) | 0.0429 (7) | 0.0301 (6) | 0.0045 (6) | 0.0152 (5) | −0.0012 (5) |
N1 | 0.0356 (7) | 0.0257 (6) | 0.0265 (6) | 0.0014 (5) | 0.0089 (5) | −0.0002 (5) |
C1 | 0.0317 (7) | 0.0247 (7) | 0.0280 (7) | −0.0012 (6) | 0.0077 (6) | 0.0019 (6) |
C2 | 0.0284 (7) | 0.0245 (7) | 0.0228 (7) | −0.0036 (6) | 0.0052 (5) | −0.0009 (5) |
C3 | 0.0260 (7) | 0.0253 (7) | 0.0245 (7) | −0.0029 (5) | 0.0036 (5) | 0.0004 (5) |
C4 | 0.0330 (8) | 0.0344 (8) | 0.0276 (7) | 0.0039 (6) | 0.0082 (6) | 0.0026 (6) |
C5 | 0.0309 (8) | 0.0421 (9) | 0.0360 (8) | 0.0062 (7) | 0.0096 (6) | 0.0036 (7) |
C6 | 0.0343 (8) | 0.0331 (8) | 0.0339 (8) | 0.0037 (6) | 0.0032 (6) | 0.0040 (6) |
C7 | 0.0349 (8) | 0.0372 (9) | 0.0263 (7) | 0.0035 (7) | 0.0026 (6) | 0.0058 (6) |
C8 | 0.0263 (7) | 0.0303 (8) | 0.0254 (7) | −0.0011 (6) | 0.0037 (6) | −0.0007 (6) |
C9 | 0.0279 (7) | 0.0244 (7) | 0.0246 (7) | −0.0042 (6) | 0.0040 (5) | −0.0003 (5) |
C10 | 0.0333 (8) | 0.0295 (8) | 0.0305 (8) | −0.0066 (6) | 0.0088 (6) | −0.0060 (6) |
C11 | 0.0268 (7) | 0.0290 (8) | 0.0378 (8) | −0.0064 (6) | 0.0104 (6) | −0.0081 (6) |
C12 | 0.0352 (8) | 0.0493 (10) | 0.0452 (10) | −0.0036 (8) | 0.0133 (7) | −0.0162 (8) |
C13 | 0.0374 (10) | 0.0572 (12) | 0.0735 (14) | 0.0054 (9) | 0.0147 (9) | −0.0305 (11) |
C14 | 0.0314 (9) | 0.0367 (10) | 0.0914 (16) | 0.0037 (7) | 0.0083 (10) | −0.0153 (10) |
C15 | 0.0422 (10) | 0.0364 (9) | 0.0638 (12) | 0.0037 (8) | 0.0097 (9) | 0.0046 (8) |
C16 | 0.0431 (9) | 0.0315 (8) | 0.0439 (9) | 0.0023 (7) | 0.0141 (7) | −0.0011 (7) |
C17 | 0.0257 (7) | 0.0267 (7) | 0.0238 (7) | 0.0040 (6) | 0.0046 (5) | 0.0030 (5) |
C18 | 0.0303 (7) | 0.0265 (7) | 0.0259 (7) | 0.0025 (6) | 0.0069 (6) | 0.0055 (5) |
C19 | 0.0329 (8) | 0.0290 (8) | 0.0330 (8) | 0.0030 (6) | 0.0012 (6) | −0.0018 (6) |
C20 | 0.0409 (9) | 0.0442 (9) | 0.0240 (7) | 0.0097 (7) | 0.0033 (6) | −0.0038 (6) |
C21 | 0.0432 (9) | 0.0471 (10) | 0.0265 (8) | 0.0068 (7) | 0.0134 (7) | 0.0094 (7) |
C22 | 0.0342 (8) | 0.0303 (8) | 0.0309 (8) | 0.0017 (6) | 0.0109 (6) | 0.0070 (6) |
S1—C8 | 1.7363 (15) | C7—C8 | 1.505 (2) |
S1—C9 | 1.7183 (14) | C10—C11 | 1.494 (2) |
O1—C1 | 1.2359 (19) | C11—C12 | 1.391 (2) |
O2—C10 | 1.219 (2) | C11—C16 | 1.389 (2) |
N1—H1 | 0.8600 | C12—H12 | 0.9300 |
N1—C9 | 1.3783 (19) | C12—C13 | 1.380 (3) |
N1—C10 | 1.369 (2) | C13—H13 | 0.9300 |
C1—C2 | 1.4701 (19) | C13—C14 | 1.371 (3) |
C1—C17 | 1.488 (2) | C14—H14 | 0.9300 |
C2—C3 | 1.444 (2) | C14—C15 | 1.383 (3) |
C2—C9 | 1.387 (2) | C15—H15 | 0.9300 |
C3—C4 | 1.508 (2) | C15—C16 | 1.385 (2) |
C3—C8 | 1.362 (2) | C16—H16 | 0.9300 |
C4—H4A | 0.9700 | C17—C18 | 1.388 (2) |
C4—H4B | 0.9700 | C17—C22 | 1.401 (2) |
C4—C5 | 1.529 (2) | C18—H18 | 0.9300 |
C5—H5A | 0.9700 | C18—C19 | 1.386 (2) |
C5—H5B | 0.9700 | C19—H19 | 0.9300 |
C5—C6 | 1.519 (2) | C19—C20 | 1.382 (2) |
C6—H6A | 0.9700 | C20—H20 | 0.9300 |
C6—H6B | 0.9700 | C20—C21 | 1.388 (3) |
C6—C7 | 1.524 (2) | C21—H21 | 0.9300 |
C7—H7A | 0.9700 | C21—C22 | 1.379 (2) |
C7—H7B | 0.9700 | C22—H22 | 0.9300 |
C9—S1—C8 | 90.96 (7) | N1—C9—C2 | 124.16 (13) |
C9—N1—H1 | 117.0 | C2—C9—S1 | 112.49 (11) |
C10—N1—H1 | 117.0 | O2—C10—N1 | 121.34 (15) |
C10—N1—C9 | 126.06 (13) | O2—C10—C11 | 123.29 (14) |
O1—C1—C2 | 120.92 (13) | N1—C10—C11 | 115.36 (13) |
O1—C1—C17 | 117.80 (13) | C12—C11—C10 | 117.07 (15) |
C2—C1—C17 | 121.15 (13) | C16—C11—C10 | 124.05 (14) |
C3—C2—C1 | 128.64 (13) | C16—C11—C12 | 118.84 (16) |
C9—C2—C1 | 119.60 (13) | C11—C12—H12 | 119.9 |
C9—C2—C3 | 111.75 (12) | C13—C12—C11 | 120.20 (19) |
C2—C3—C4 | 127.10 (12) | C13—C12—H12 | 119.9 |
C8—C3—C2 | 111.73 (13) | C12—C13—H13 | 119.6 |
C8—C3—C4 | 120.77 (13) | C14—C13—C12 | 120.84 (18) |
C3—C4—H4A | 109.6 | C14—C13—H13 | 119.6 |
C3—C4—H4B | 109.6 | C13—C14—H14 | 120.2 |
C3—C4—C5 | 110.47 (12) | C13—C14—C15 | 119.55 (18) |
H4A—C4—H4B | 108.1 | C15—C14—H14 | 120.2 |
C5—C4—H4A | 109.6 | C14—C15—H15 | 119.9 |
C5—C4—H4B | 109.6 | C14—C15—C16 | 120.2 (2) |
C4—C5—H5A | 109.4 | C16—C15—H15 | 119.9 |
C4—C5—H5B | 109.4 | C11—C16—H16 | 119.8 |
H5A—C5—H5B | 108.0 | C15—C16—C11 | 120.34 (17) |
C6—C5—C4 | 111.07 (13) | C15—C16—H16 | 119.8 |
C6—C5—H5A | 109.4 | C18—C17—C1 | 121.09 (13) |
C6—C5—H5B | 109.4 | C18—C17—C22 | 119.26 (13) |
C5—C6—H6A | 109.4 | C22—C17—C1 | 119.09 (13) |
C5—C6—H6B | 109.4 | C17—C18—H18 | 119.8 |
C5—C6—C7 | 111.01 (13) | C19—C18—C17 | 120.38 (14) |
H6A—C6—H6B | 108.0 | C19—C18—H18 | 119.8 |
C7—C6—H6A | 109.4 | C18—C19—H19 | 119.9 |
C7—C6—H6B | 109.4 | C20—C19—C18 | 120.12 (15) |
C6—C7—H7A | 109.6 | C20—C19—H19 | 119.9 |
C6—C7—H7B | 109.6 | C19—C20—H20 | 120.1 |
H7A—C7—H7B | 108.1 | C19—C20—C21 | 119.85 (15) |
C8—C7—C6 | 110.29 (12) | C21—C20—H20 | 120.1 |
C8—C7—H7A | 109.6 | C20—C21—H21 | 119.8 |
C8—C7—H7B | 109.6 | C22—C21—C20 | 120.39 (15) |
C3—C8—S1 | 113.01 (11) | C22—C21—H21 | 119.8 |
C3—C8—C7 | 126.25 (14) | C17—C22—H22 | 120.0 |
C7—C8—S1 | 120.68 (11) | C21—C22—C17 | 119.98 (15) |
N1—C9—S1 | 123.35 (11) | C21—C22—H22 | 120.0 |
O1—C1—C2—C3 | 155.63 (15) | C8—S1—C9—N1 | 177.76 (13) |
O1—C1—C2—C9 | −23.4 (2) | C8—S1—C9—C2 | −2.17 (12) |
O1—C1—C17—C18 | 135.47 (15) | C8—C3—C4—C5 | 16.3 (2) |
O1—C1—C17—C22 | −35.8 (2) | C9—S1—C8—C3 | 0.70 (12) |
O2—C10—C11—C12 | −6.8 (2) | C9—S1—C8—C7 | −176.53 (13) |
O2—C10—C11—C16 | 175.24 (16) | C9—N1—C10—O2 | −1.2 (2) |
N1—C10—C11—C12 | 172.35 (14) | C9—N1—C10—C11 | 179.62 (13) |
N1—C10—C11—C16 | −5.6 (2) | C9—C2—C3—C4 | 170.22 (14) |
C1—C2—C3—C4 | −8.8 (2) | C9—C2—C3—C8 | −2.51 (18) |
C1—C2—C3—C8 | 178.44 (14) | C10—N1—C9—S1 | 2.1 (2) |
C1—C2—C9—S1 | −177.81 (10) | C10—N1—C9—C2 | −177.95 (14) |
C1—C2—C9—N1 | 2.3 (2) | C10—C11—C12—C13 | −177.16 (16) |
C1—C17—C18—C19 | −170.37 (14) | C10—C11—C16—C15 | 177.18 (16) |
C1—C17—C22—C21 | 171.94 (14) | C11—C12—C13—C14 | −0.3 (3) |
C2—C1—C17—C18 | −40.4 (2) | C12—C11—C16—C15 | −0.7 (3) |
C2—C1—C17—C22 | 148.30 (14) | C12—C13—C14—C15 | −0.4 (3) |
C2—C3—C4—C5 | −155.81 (14) | C13—C14—C15—C16 | 0.6 (3) |
C2—C3—C8—S1 | 0.89 (16) | C14—C15—C16—C11 | 0.0 (3) |
C2—C3—C8—C7 | 177.93 (14) | C16—C11—C12—C13 | 0.9 (3) |
C3—C2—C9—S1 | 3.05 (16) | C17—C1—C2—C3 | −28.6 (2) |
C3—C2—C9—N1 | −176.88 (13) | C17—C1—C2—C9 | 152.41 (14) |
C3—C4—C5—C6 | −49.88 (18) | C17—C18—C19—C20 | −1.4 (2) |
C4—C3—C8—S1 | −172.37 (11) | C18—C17—C22—C21 | 0.5 (2) |
C4—C3—C8—C7 | 4.7 (2) | C18—C19—C20—C21 | 0.6 (2) |
C4—C5—C6—C7 | 64.62 (18) | C19—C20—C21—C22 | 0.8 (3) |
C5—C6—C7—C8 | −41.43 (18) | C20—C21—C22—C17 | −1.4 (2) |
C6—C7—C8—S1 | −175.02 (11) | C22—C17—C18—C19 | 0.9 (2) |
C6—C7—C8—C3 | 8.1 (2) |
Acknowledgements
MK is grateful to the CPEPA–UGC for the award of a JRF and thanks the University of Mysore for research facilities. JPJ acknowledges the NSF–MRI program (grant No. CHE-1039027) for funds to purchase the X-ray diffractometer.
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