organic compounds
5,17-Dibromo-26,28-dihydroxy-25,27-dipropoxy-2,8,14,20-tetrathiacalix[4]arene
aDepartment of Chemistry, Shandong Normal University, Jinan 250014, People's Republic of China
*Correspondence e-mail: chdsguo@sdnu.edu.cn
In the title compound, C30H26Br2O4S4, the thiacalix[4]arene unit adopts a pinched cone conformation, with one of the ether-substituted rings bent towards the calix cavity and the two phenolic rings bent outwards. The phenyl rings make dihedral angles of 27.12 (9), 36.71 (10), 75.04 (8), and 76.01 (7)° with the virtual plane defined by the four bridging S atoms. The two opposite ether-substituted rings are almost parallel to each other, with an interplanar anagle of 2.99 (12)°, while the two phenolic rings are nearly perpendicular to each other, making a dihedral angle of 74.52 (11)° and a Br⋯Br distance of 13.17 (2) Å. Two intramolecular O—H⋯O hydrogen bonds between the OH groups and the same ether O atom stabilize the cone conformation. In the crystal, two different chains of molecules, one with alternating and the other with tail-to-tail orientations, are formed by intermolecular offset-face-to-face π–π stacking interactions with distances of 3.606 (3) to 4.488 (4) Å between the centroids of the aromatic rings.
Related literature
For general background to the chemistry of thiacalix[4]arenes, see: Shokova & Kovalev (2003); Lhoták (2004); Morohashi et al. (2006); Kajiwara et al. (2007); Guo et al. (2007). For the synthesis and related structures, see: Lhoták et al. (2001); Kasyan et al. (2003); Desroches et al. (2004); Kasyan et al. (2006); Morohashi et al. (2006); Xu et al. (2008); Chen et al. (2010). For π–π stacking interactions, see: Tsuzuki et al. (2002).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1999); cell SAINT (Bruker, 1999); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536811013043/im2275sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811013043/im2275Isup2.hkl
The title compound was prepared by a published procedure (Lhoták et al., 2001). Single crystals of the title compound suitable for X-ray
were obtained by slow evaporation of a solution in CH2Cl2 and CH3OH (v: v = 2: 1) at 273 K.All non-hydrogen atoms were refined with anisotropic displacement parameters. Hydrogen atoms attached to refined atoms were placed in geometrically idealized positions and refined using a riding model, with C—H = 0.93, 0.98 and 0.97 Å for aromatic, methylene and methyl H, respectively, and Uiso(H) = 1.5Ueq(C) for methyl H, and Uiso(H) =1.2Ueq(C) for all other H atoms.
Data collection: SMART (Bruker, 1999); cell
SAINT (Bruker, 1999); data reduction: SAINT (Bruker, 1999); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C30H26Br2O4S4 | Z = 2 |
Mr = 738.57 | F(000) = 744 |
Triclinic, P1 | Dx = 1.621 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.3788 (16) Å | Cell parameters from 2882 reflections |
b = 11.712 (2) Å | θ = 2.5–26.7° |
c = 14.768 (3) Å | µ = 2.99 mm−1 |
α = 97.904 (2)° | T = 298 K |
β = 95.614 (1)° | Block, colourless |
γ = 107.738 (2)° | 0.29 × 0.21 × 0.20 mm |
V = 1513.5 (4) Å3 |
Bruker SMART CCD area-detector diffractometer | 5513 independent reflections |
Radiation source: fine-focus sealed tube | 4162 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.017 |
phi and ω scans | θmax = 25.5°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 1999) | h = −10→11 |
Tmin = 0.478, Tmax = 0.586 | k = −12→14 |
7993 measured reflections | l = −17→17 |
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)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.108 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0511P)2 + 0.5589P] where P = (Fo2 + 2Fc2)/3 |
5513 reflections | (Δ/σ)max = 0.001 |
365 parameters | Δρmax = 0.74 e Å−3 |
0 restraints | Δρmin = −0.54 e Å−3 |
C30H26Br2O4S4 | γ = 107.738 (2)° |
Mr = 738.57 | V = 1513.5 (4) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.3788 (16) Å | Mo Kα radiation |
b = 11.712 (2) Å | µ = 2.99 mm−1 |
c = 14.768 (3) Å | T = 298 K |
α = 97.904 (2)° | 0.29 × 0.21 × 0.20 mm |
β = 95.614 (1)° |
Bruker SMART CCD area-detector diffractometer | 5513 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1999) | 4162 reflections with I > 2σ(I) |
Tmin = 0.478, Tmax = 0.586 | Rint = 0.017 |
7993 measured reflections |
R[F2 > 2σ(F2)] = 0.041 | 0 restraints |
wR(F2) = 0.108 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.74 e Å−3 |
5513 reflections | Δρmin = −0.54 e Å−3 |
365 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s 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 > σ(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 | ||
Br1 | 0.51306 (5) | 0.32748 (4) | 1.28607 (3) | 0.06261 (15) | |
Br2 | −0.19390 (6) | −0.37147 (4) | 0.49367 (3) | 0.07472 (17) | |
C1 | −0.1371 (4) | 0.0988 (3) | 0.7904 (2) | 0.0413 (8) | |
C2 | −0.2029 (4) | 0.0044 (3) | 0.8354 (3) | 0.0525 (9) | |
H2 | −0.2691 | −0.0686 | 0.8016 | 0.063* | |
C3 | −0.1711 (5) | 0.0178 (4) | 0.9301 (3) | 0.0570 (10) | |
H3 | −0.2138 | −0.0469 | 0.9596 | 0.068* | |
C4 | −0.0766 (4) | 0.1264 (4) | 0.9810 (3) | 0.0526 (10) | |
H4 | −0.0574 | 0.1352 | 1.0450 | 0.063* | |
C5 | −0.0097 (4) | 0.2227 (3) | 0.9378 (2) | 0.0434 (8) | |
C6 | −0.0376 (4) | 0.2078 (3) | 0.8419 (2) | 0.0387 (8) | |
C7 | 0.2766 (4) | 0.3469 (3) | 1.0398 (2) | 0.0414 (8) | |
C8 | 0.3184 (4) | 0.3436 (3) | 1.1317 (2) | 0.0451 (9) | |
H8 | 0.2522 | 0.3474 | 1.1741 | 0.054* | |
C9 | 0.4581 (4) | 0.3349 (3) | 1.1600 (2) | 0.0440 (8) | |
C10 | 0.5564 (4) | 0.3273 (3) | 1.0981 (2) | 0.0449 (8) | |
H10 | 0.6499 | 0.3201 | 1.1181 | 0.054* | |
C11 | 0.5164 (4) | 0.3305 (3) | 1.0062 (2) | 0.0412 (8) | |
C12 | 0.3760 (4) | 0.3422 (3) | 0.9761 (2) | 0.0408 (8) | |
C13 | 0.5253 (4) | 0.1679 (3) | 0.8624 (2) | 0.0367 (7) | |
C14 | 0.4575 (4) | 0.0772 (3) | 0.9097 (2) | 0.0439 (8) | |
H14 | 0.4753 | 0.0914 | 0.9739 | 0.053* | |
C15 | 0.3638 (4) | −0.0341 (3) | 0.8626 (3) | 0.0505 (9) | |
H15 | 0.3194 | −0.0953 | 0.8948 | 0.061* | |
C16 | 0.3362 (4) | −0.0543 (3) | 0.7679 (2) | 0.0453 (8) | |
H16 | 0.2729 | −0.1297 | 0.7361 | 0.054* | |
C17 | 0.4008 (4) | 0.0357 (3) | 0.7190 (2) | 0.0357 (7) | |
C18 | 0.5011 (4) | 0.1471 (3) | 0.7661 (2) | 0.0344 (7) | |
C19 | 0.1502 (4) | −0.0465 (3) | 0.5925 (2) | 0.0387 (8) | |
C20 | 0.0703 (4) | −0.1655 (3) | 0.5527 (2) | 0.0443 (8) | |
H20 | 0.1209 | −0.2168 | 0.5282 | 0.053* | |
C21 | −0.0847 (4) | −0.2084 (3) | 0.5492 (2) | 0.0467 (9) | |
C22 | −0.1623 (4) | −0.1353 (3) | 0.5865 (2) | 0.0465 (9) | |
H22 | −0.2667 | −0.1656 | 0.5841 | 0.056* | |
C23 | −0.0828 (4) | −0.0161 (3) | 0.6278 (2) | 0.0399 (8) | |
C24 | 0.0744 (4) | 0.0297 (3) | 0.6307 (2) | 0.0401 (8) | |
C25 | −0.0263 (4) | 0.3907 (3) | 0.7817 (3) | 0.0548 (10) | |
H25A | −0.1217 | 0.3545 | 0.7407 | 0.066* | |
H25B | −0.0457 | 0.4288 | 0.8398 | 0.066* | |
C26 | 0.0777 (6) | 0.4811 (4) | 0.7405 (4) | 0.0778 (14) | |
H26A | 0.0879 | 0.4421 | 0.6803 | 0.093* | |
H26B | 0.1763 | 0.5068 | 0.7784 | 0.093* | |
C27 | 0.0364 (6) | 0.5914 (4) | 0.7288 (4) | 0.0860 (16) | |
H27A | −0.0710 | 0.5689 | 0.7107 | 0.129* | |
H27B | 0.0877 | 0.6287 | 0.6819 | 0.129* | |
H27C | 0.0658 | 0.6480 | 0.7861 | 0.129* | |
C28 | 0.5073 (4) | 0.3165 (3) | 0.6889 (3) | 0.0496 (9) | |
H28A | 0.4971 | 0.3710 | 0.7417 | 0.059* | |
H28B | 0.4071 | 0.2716 | 0.6553 | 0.059* | |
C29 | 0.6031 (4) | 0.3874 (3) | 0.6276 (3) | 0.0506 (9) | |
H29A | 0.7014 | 0.4335 | 0.6632 | 0.061* | |
H29B | 0.5568 | 0.4453 | 0.6080 | 0.061* | |
C30 | 0.6257 (6) | 0.3113 (4) | 0.5436 (3) | 0.0728 (13) | |
H30A | 0.6726 | 0.2542 | 0.5621 | 0.109* | |
H30B | 0.6895 | 0.3629 | 0.5083 | 0.109* | |
H30C | 0.5295 | 0.2679 | 0.5063 | 0.109* | |
O1 | 0.5815 (3) | 0.2325 (2) | 0.71942 (15) | 0.0412 (5) | |
O2 | 0.3429 (3) | 0.3459 (2) | 0.88626 (15) | 0.0491 (6) | |
H2A | 0.2598 | 0.3551 | 0.8768 | 0.074* | |
O3 | 0.0416 (2) | 0.2975 (2) | 0.79765 (16) | 0.0423 (5) | |
O4 | 0.1557 (3) | 0.1454 (2) | 0.66895 (17) | 0.0474 (6) | |
H4A | 0.0986 | 0.1822 | 0.6857 | 0.071* | |
S4 | 0.64004 (10) | 0.31392 (8) | 0.92504 (6) | 0.0459 (2) | |
S3 | 0.35097 (10) | 0.00864 (8) | 0.59664 (6) | 0.0453 (2) | |
S2 | −0.18282 (10) | 0.08270 (9) | 0.66809 (6) | 0.0486 (2) | |
S1 | 0.10033 (11) | 0.36788 (9) | 1.00496 (7) | 0.0512 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.0684 (3) | 0.0745 (3) | 0.0419 (2) | 0.0225 (2) | 0.00312 (19) | 0.00470 (19) |
Br2 | 0.0791 (3) | 0.0426 (2) | 0.0834 (3) | 0.0006 (2) | 0.0035 (3) | −0.0026 (2) |
C1 | 0.0335 (18) | 0.048 (2) | 0.0477 (19) | 0.0186 (16) | 0.0124 (15) | 0.0088 (16) |
C2 | 0.045 (2) | 0.047 (2) | 0.068 (3) | 0.0160 (18) | 0.0165 (19) | 0.0109 (19) |
C3 | 0.057 (3) | 0.059 (3) | 0.068 (3) | 0.024 (2) | 0.024 (2) | 0.030 (2) |
C4 | 0.053 (2) | 0.068 (3) | 0.049 (2) | 0.030 (2) | 0.0175 (19) | 0.019 (2) |
C5 | 0.0358 (19) | 0.052 (2) | 0.049 (2) | 0.0241 (17) | 0.0109 (16) | 0.0067 (17) |
C6 | 0.0328 (18) | 0.0460 (19) | 0.0454 (19) | 0.0214 (16) | 0.0119 (15) | 0.0108 (16) |
C7 | 0.0396 (19) | 0.0395 (19) | 0.045 (2) | 0.0158 (16) | 0.0072 (16) | −0.0006 (15) |
C8 | 0.048 (2) | 0.045 (2) | 0.0416 (19) | 0.0154 (17) | 0.0140 (17) | 0.0007 (15) |
C9 | 0.048 (2) | 0.0415 (19) | 0.0390 (18) | 0.0144 (17) | 0.0035 (16) | −0.0005 (15) |
C10 | 0.042 (2) | 0.044 (2) | 0.046 (2) | 0.0143 (17) | 0.0018 (16) | −0.0012 (16) |
C11 | 0.0351 (19) | 0.0409 (19) | 0.0448 (19) | 0.0112 (15) | 0.0085 (15) | −0.0008 (15) |
C12 | 0.042 (2) | 0.0375 (18) | 0.0420 (19) | 0.0143 (15) | 0.0063 (16) | 0.0016 (15) |
C13 | 0.0290 (17) | 0.0390 (18) | 0.0446 (19) | 0.0153 (14) | 0.0079 (14) | 0.0042 (15) |
C14 | 0.048 (2) | 0.049 (2) | 0.0393 (18) | 0.0201 (18) | 0.0081 (16) | 0.0118 (16) |
C15 | 0.061 (3) | 0.041 (2) | 0.054 (2) | 0.0167 (19) | 0.0138 (19) | 0.0193 (17) |
C16 | 0.047 (2) | 0.0356 (18) | 0.053 (2) | 0.0128 (16) | 0.0079 (17) | 0.0065 (16) |
C17 | 0.0349 (18) | 0.0389 (18) | 0.0384 (17) | 0.0178 (15) | 0.0094 (14) | 0.0076 (14) |
C18 | 0.0294 (17) | 0.0378 (17) | 0.0409 (18) | 0.0155 (14) | 0.0107 (14) | 0.0088 (14) |
C19 | 0.0409 (19) | 0.0436 (19) | 0.0302 (16) | 0.0117 (16) | 0.0070 (14) | 0.0051 (14) |
C20 | 0.054 (2) | 0.046 (2) | 0.0348 (18) | 0.0190 (18) | 0.0084 (16) | 0.0064 (15) |
C21 | 0.053 (2) | 0.0346 (18) | 0.0427 (19) | 0.0037 (17) | −0.0003 (17) | 0.0039 (15) |
C22 | 0.040 (2) | 0.047 (2) | 0.047 (2) | 0.0054 (17) | 0.0043 (16) | 0.0118 (17) |
C23 | 0.0362 (19) | 0.046 (2) | 0.0383 (18) | 0.0118 (16) | 0.0075 (15) | 0.0103 (15) |
C24 | 0.040 (2) | 0.0428 (19) | 0.0366 (17) | 0.0113 (16) | 0.0056 (15) | 0.0076 (15) |
C25 | 0.041 (2) | 0.054 (2) | 0.076 (3) | 0.0204 (18) | 0.0100 (19) | 0.023 (2) |
C26 | 0.071 (3) | 0.060 (3) | 0.111 (4) | 0.017 (2) | 0.034 (3) | 0.037 (3) |
C27 | 0.065 (3) | 0.067 (3) | 0.125 (4) | 0.008 (2) | 0.005 (3) | 0.049 (3) |
C28 | 0.047 (2) | 0.048 (2) | 0.064 (2) | 0.0217 (18) | 0.0218 (19) | 0.0181 (18) |
C29 | 0.048 (2) | 0.045 (2) | 0.062 (2) | 0.0138 (17) | 0.0131 (18) | 0.0164 (18) |
C30 | 0.093 (4) | 0.072 (3) | 0.064 (3) | 0.027 (3) | 0.038 (3) | 0.028 (2) |
O1 | 0.0362 (13) | 0.0439 (13) | 0.0472 (13) | 0.0125 (11) | 0.0154 (11) | 0.0156 (11) |
O2 | 0.0443 (15) | 0.0672 (17) | 0.0424 (14) | 0.0265 (13) | 0.0083 (11) | 0.0109 (12) |
O3 | 0.0342 (13) | 0.0456 (13) | 0.0503 (14) | 0.0144 (11) | 0.0116 (11) | 0.0113 (11) |
O4 | 0.0373 (13) | 0.0400 (13) | 0.0595 (15) | 0.0085 (11) | 0.0113 (12) | −0.0035 (11) |
S4 | 0.0334 (5) | 0.0504 (5) | 0.0491 (5) | 0.0100 (4) | 0.0085 (4) | −0.0014 (4) |
S3 | 0.0415 (5) | 0.0544 (5) | 0.0383 (5) | 0.0137 (4) | 0.0129 (4) | 0.0011 (4) |
S2 | 0.0390 (5) | 0.0596 (6) | 0.0484 (5) | 0.0207 (4) | 0.0022 (4) | 0.0051 (4) |
S1 | 0.0480 (6) | 0.0588 (6) | 0.0516 (5) | 0.0303 (5) | 0.0067 (4) | −0.0043 (4) |
Br1—C9 | 1.904 (3) | C17—S3 | 1.781 (3) |
Br2—C21 | 1.893 (3) | C18—O1 | 1.369 (4) |
C1—C2 | 1.382 (5) | C19—C20 | 1.379 (5) |
C1—C6 | 1.395 (5) | C19—C24 | 1.396 (5) |
C1—S2 | 1.786 (4) | C19—S3 | 1.787 (3) |
C2—C3 | 1.377 (6) | C20—C21 | 1.379 (5) |
C2—H2 | 0.9300 | C20—H20 | 0.9300 |
C3—C4 | 1.374 (6) | C21—C22 | 1.376 (5) |
C3—H3 | 0.9300 | C22—C23 | 1.386 (5) |
C4—C5 | 1.386 (5) | C22—H22 | 0.9300 |
C4—H4 | 0.9300 | C23—C24 | 1.400 (5) |
C5—C6 | 1.392 (5) | C23—S2 | 1.776 (3) |
C5—S1 | 1.790 (4) | C24—O4 | 1.346 (4) |
C6—O3 | 1.375 (4) | C25—C26 | 1.451 (5) |
C7—C8 | 1.383 (5) | C25—O3 | 1.456 (4) |
C7—C12 | 1.395 (5) | C25—H25A | 0.9700 |
C7—S1 | 1.782 (4) | C25—H25B | 0.9700 |
C8—C9 | 1.374 (5) | C26—C27 | 1.485 (6) |
C8—H8 | 0.9300 | C26—H26A | 0.9700 |
C9—C10 | 1.373 (5) | C26—H26B | 0.9700 |
C10—C11 | 1.381 (5) | C27—H27A | 0.9600 |
C10—H10 | 0.9300 | C27—H27B | 0.9600 |
C11—C12 | 1.401 (5) | C27—H27C | 0.9600 |
C11—S4 | 1.779 (3) | C28—O1 | 1.461 (4) |
C12—O2 | 1.343 (4) | C28—C29 | 1.492 (5) |
C13—C14 | 1.378 (5) | C28—H28A | 0.9700 |
C13—C18 | 1.394 (4) | C28—H28B | 0.9700 |
C13—S4 | 1.785 (3) | C29—C30 | 1.498 (5) |
C14—C15 | 1.373 (5) | C29—H29A | 0.9700 |
C14—H14 | 0.9300 | C29—H29B | 0.9700 |
C15—C16 | 1.372 (5) | C30—H30A | 0.9600 |
C15—H15 | 0.9300 | C30—H30B | 0.9600 |
C16—C17 | 1.379 (5) | C30—H30C | 0.9600 |
C16—H16 | 0.9300 | O2—H2A | 0.8200 |
C17—C18 | 1.395 (4) | O4—H4A | 0.8200 |
C2—C1—C6 | 119.3 (3) | C21—C20—H20 | 120.0 |
C2—C1—S2 | 120.3 (3) | C19—C20—H20 | 120.0 |
C6—C1—S2 | 120.4 (3) | C22—C21—C20 | 121.3 (3) |
C3—C2—C1 | 120.5 (4) | C22—C21—Br2 | 118.9 (3) |
C3—C2—H2 | 119.8 | C20—C21—Br2 | 119.8 (3) |
C1—C2—H2 | 119.8 | C21—C22—C23 | 119.2 (3) |
C4—C3—C2 | 120.2 (4) | C21—C22—H22 | 120.4 |
C4—C3—H3 | 119.9 | C23—C22—H22 | 120.4 |
C2—C3—H3 | 119.9 | C22—C23—C24 | 120.4 (3) |
C3—C4—C5 | 120.6 (4) | C22—C23—S2 | 119.6 (3) |
C3—C4—H4 | 119.7 | C24—C23—S2 | 119.8 (3) |
C5—C4—H4 | 119.7 | O4—C24—C19 | 118.4 (3) |
C4—C5—C6 | 119.2 (3) | O4—C24—C23 | 122.4 (3) |
C4—C5—S1 | 120.3 (3) | C19—C24—C23 | 119.2 (3) |
C6—C5—S1 | 120.3 (3) | C26—C25—O3 | 108.5 (3) |
O3—C6—C5 | 119.6 (3) | C26—C25—H25A | 110.0 |
O3—C6—C1 | 120.0 (3) | O3—C25—H25A | 110.0 |
C5—C6—C1 | 120.2 (3) | C26—C25—H25B | 110.0 |
C8—C7—C12 | 120.3 (3) | O3—C25—H25B | 110.0 |
C8—C7—S1 | 119.5 (3) | H25A—C25—H25B | 108.4 |
C12—C7—S1 | 120.1 (3) | C25—C26—C27 | 116.5 (4) |
C9—C8—C7 | 119.8 (3) | C25—C26—H26A | 108.2 |
C9—C8—H8 | 120.1 | C27—C26—H26A | 108.2 |
C7—C8—H8 | 120.1 | C25—C26—H26B | 108.2 |
C10—C9—C8 | 121.0 (3) | C27—C26—H26B | 108.2 |
C10—C9—Br1 | 119.6 (3) | H26A—C26—H26B | 107.3 |
C8—C9—Br1 | 119.4 (3) | C26—C27—H27A | 109.5 |
C9—C10—C11 | 120.0 (3) | C26—C27—H27B | 109.5 |
C9—C10—H10 | 120.0 | H27A—C27—H27B | 109.5 |
C11—C10—H10 | 120.0 | C26—C27—H27C | 109.5 |
C10—C11—C12 | 120.1 (3) | H27A—C27—H27C | 109.5 |
C10—C11—S4 | 120.0 (3) | H27B—C27—H27C | 109.5 |
C12—C11—S4 | 119.9 (3) | O1—C28—C29 | 107.6 (3) |
O2—C12—C7 | 123.3 (3) | O1—C28—H28A | 110.2 |
O2—C12—C11 | 117.8 (3) | C29—C28—H28A | 110.2 |
C7—C12—C11 | 118.9 (3) | O1—C28—H28B | 110.2 |
C14—C13—C18 | 120.3 (3) | C29—C28—H28B | 110.2 |
C14—C13—S4 | 119.8 (3) | H28A—C28—H28B | 108.5 |
C18—C13—S4 | 119.9 (2) | C28—C29—C30 | 114.4 (3) |
C15—C14—C13 | 120.5 (3) | C28—C29—H29A | 108.7 |
C15—C14—H14 | 119.7 | C30—C29—H29A | 108.7 |
C13—C14—H14 | 119.7 | C28—C29—H29B | 108.7 |
C16—C15—C14 | 119.6 (3) | C30—C29—H29B | 108.7 |
C16—C15—H15 | 120.2 | H29A—C29—H29B | 107.6 |
C14—C15—H15 | 120.2 | C29—C30—H30A | 109.5 |
C15—C16—C17 | 121.0 (3) | C29—C30—H30B | 109.5 |
C15—C16—H16 | 119.5 | H30A—C30—H30B | 109.5 |
C17—C16—H16 | 119.5 | C29—C30—H30C | 109.5 |
C16—C17—C18 | 119.7 (3) | H30A—C30—H30C | 109.5 |
C16—C17—S3 | 119.3 (3) | H30B—C30—H30C | 109.5 |
C18—C17—S3 | 121.0 (2) | C18—O1—C28 | 116.7 (2) |
O1—C18—C13 | 120.0 (3) | C12—O2—H2A | 109.5 |
O1—C18—C17 | 121.2 (3) | C6—O3—C25 | 116.5 (2) |
C13—C18—C17 | 118.7 (3) | C24—O4—H4A | 109.5 |
C20—C19—C24 | 119.9 (3) | C11—S4—C13 | 97.33 (15) |
C20—C19—S3 | 119.8 (3) | C17—S3—C19 | 97.63 (15) |
C24—C19—S3 | 120.3 (3) | C23—S2—C1 | 101.49 (15) |
C21—C20—C19 | 120.0 (3) | C7—S1—C5 | 103.06 (15) |
C6—C1—C2—C3 | 0.2 (5) | C16—C17—C18—C13 | −4.5 (5) |
S2—C1—C2—C3 | −178.2 (3) | S3—C17—C18—C13 | 174.0 (2) |
C1—C2—C3—C4 | 1.7 (6) | C24—C19—C20—C21 | 1.1 (5) |
C2—C3—C4—C5 | −1.3 (6) | S3—C19—C20—C21 | −179.9 (3) |
C3—C4—C5—C6 | −0.9 (5) | C19—C20—C21—C22 | −1.3 (5) |
C3—C4—C5—S1 | 174.7 (3) | C19—C20—C21—Br2 | 179.5 (2) |
C4—C5—C6—O3 | −172.5 (3) | C20—C21—C22—C23 | 0.4 (5) |
S1—C5—C6—O3 | 11.9 (4) | Br2—C21—C22—C23 | 179.6 (3) |
C4—C5—C6—C1 | 2.9 (5) | C21—C22—C23—C24 | 0.5 (5) |
S1—C5—C6—C1 | −172.8 (2) | C21—C22—C23—S2 | 175.1 (3) |
C2—C1—C6—O3 | 172.8 (3) | C20—C19—C24—O4 | −179.9 (3) |
S2—C1—C6—O3 | −8.8 (4) | S3—C19—C24—O4 | 1.1 (4) |
C2—C1—C6—C5 | −2.5 (5) | C20—C19—C24—C23 | −0.2 (5) |
S2—C1—C6—C5 | 175.9 (2) | S3—C19—C24—C23 | −179.1 (2) |
C12—C7—C8—C9 | −0.5 (5) | C22—C23—C24—O4 | 179.1 (3) |
S1—C7—C8—C9 | −176.1 (3) | S2—C23—C24—O4 | 4.5 (5) |
C7—C8—C9—C10 | −1.1 (5) | C22—C23—C24—C19 | −0.6 (5) |
C7—C8—C9—Br1 | −178.9 (3) | S2—C23—C24—C19 | −175.2 (2) |
C8—C9—C10—C11 | 1.1 (5) | O3—C25—C26—C27 | −173.3 (4) |
Br1—C9—C10—C11 | 178.9 (3) | O1—C28—C29—C30 | 59.9 (4) |
C9—C10—C11—C12 | 0.4 (5) | C13—C18—O1—C28 | −96.9 (3) |
C9—C10—C11—S4 | −177.2 (3) | C17—C18—O1—C28 | 86.8 (4) |
C8—C7—C12—O2 | −179.5 (3) | C29—C28—O1—C18 | −171.2 (3) |
S1—C7—C12—O2 | −3.9 (5) | C5—C6—O3—C25 | −91.0 (4) |
C8—C7—C12—C11 | 1.9 (5) | C1—C6—O3—C25 | 93.7 (4) |
S1—C7—C12—C11 | 177.5 (2) | C26—C25—O3—C6 | 176.1 (3) |
C10—C11—C12—O2 | 179.4 (3) | C10—C11—S4—C13 | 111.1 (3) |
S4—C11—C12—O2 | −2.9 (4) | C12—C11—S4—C13 | −66.5 (3) |
C10—C11—C12—C7 | −1.9 (5) | C14—C13—S4—C11 | −44.9 (3) |
S4—C11—C12—C7 | 175.8 (3) | C18—C13—S4—C11 | 133.3 (3) |
C18—C13—C14—C15 | −0.9 (5) | C16—C17—S3—C19 | 49.0 (3) |
S4—C13—C14—C15 | 177.3 (3) | C18—C17—S3—C19 | −129.5 (3) |
C13—C14—C15—C16 | −0.8 (5) | C20—C19—S3—C17 | −114.9 (3) |
C14—C15—C16—C17 | −0.2 (5) | C24—C19—S3—C17 | 64.0 (3) |
C15—C16—C17—C18 | 2.9 (5) | C22—C23—S2—C1 | 109.2 (3) |
C15—C16—C17—S3 | −175.6 (3) | C24—C23—S2—C1 | −76.2 (3) |
C14—C13—C18—O1 | −172.8 (3) | C2—C1—S2—C23 | −74.2 (3) |
S4—C13—C18—O1 | 9.0 (4) | C6—C1—S2—C23 | 107.5 (3) |
C14—C13—C18—C17 | 3.6 (5) | C8—C7—S1—C5 | −110.4 (3) |
S4—C13—C18—C17 | −174.6 (2) | C12—C7—S1—C5 | 74.0 (3) |
C16—C17—C18—O1 | 171.8 (3) | C4—C5—S1—C7 | 78.8 (3) |
S3—C17—C18—O1 | −9.7 (4) | C6—C5—S1—C7 | −105.6 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4A···O3 | 0.82 | 2.20 | 2.926 (3) | 148 |
O2—H2A···O3 | 0.82 | 2.12 | 2.849 (3) | 148 |
Experimental details
Crystal data | |
Chemical formula | C30H26Br2O4S4 |
Mr | 738.57 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 298 |
a, b, c (Å) | 9.3788 (16), 11.712 (2), 14.768 (3) |
α, β, γ (°) | 97.904 (2), 95.614 (1), 107.738 (2) |
V (Å3) | 1513.5 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 2.99 |
Crystal size (mm) | 0.29 × 0.21 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 1999) |
Tmin, Tmax | 0.478, 0.586 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7993, 5513, 4162 |
Rint | 0.017 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.108, 1.05 |
No. of reflections | 5513 |
No. of parameters | 365 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.74, −0.54 |
Computer programs: SMART (Bruker, 1999), SAINT (Bruker, 1999), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4A···O3 | 0.82 | 2.20 | 2.926 (3) | 148 |
O2—H2A···O3 | 0.82 | 2.12 | 2.849 (3) | 148 |
Acknowledgements
Financial support from the National Natural Science Foundation of China (grant No. 20572064) and the Natural Science Foundation of Shandong Province (grant No. ZR2010BM022) is gratefully acknowledged.
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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.
Thiacalix[4]arenes are new versatile scaffolds for constructing highly organized receptors via appropriate chemical modifications at the upper or/and lower rim (Shokova & Kovalev, 2003; Lhoták, 2004; Morohashi et al., 2006; Kajiwara et al., 2007; Guo et al., 2007). Usually, it can be attained by electrophilic bromination at the upper rim to yield the corresponding bromosubstituted thiacalix[4]arene derivatives (Lhoták et al., 2001; Kasyan et al., 2003; Xu et al., 2008; Chen et al., 2010), which can be further used to create more elaborate molecules and novel supramolecular systems. Only a few cyrstal structures of such derivatives are known, however, most of which are tetrabromothiacalix[4]arenes. Recently, Lhoták et al. (2001) presented the synthesis of a dibromothiacalix[4]arene, namely 5,17-dibromo-25,27-dipropoxy-26,28-dihydroxy-2,8,14,20-tetrathiacalix[4]arene, by a selective bromination reaction. We now report the crystal structure of this compound.
In the crystal structure of the title compound, as illustrated in Fig. 1, the thiacalix[4]arene unit is found in a pinched cone conformation. Two opposite ether-substituted rings, one of which is bent towards the calix cavity, are almost parallel to each other, forming a dihedral anagle of 2.99 (12)°. On the other hand, both phenolic rings are bent outwards and nearly perpendicular to each other, with an interplanar angle of 74.52 (11)° and a Br···Br distance of 13.17 (2) Å. The dihedral angles between the virtual plane defined by the four bridging S atoms and C1–C6, C7–C12, C13–C18 and C19–C24 rings are 75.04 (8), 27.12 (9), 76.01 (7) and 36.71 (10) °, respectively. Two intramolecular O—H···O hydrogen bonds (Table 1) stabilizing the cone conformation, are formed in the crystal structure. Interestingly, both OH groups make the hydrogen bonds to the same ethereal O atom, O3 (Fig. 2). A similar arrangement of such hydrogen bonds was discussed by Kasyan et al. (2006), while a different pattern, in which one OH group forms the hydrogen bonds to its both adjacent ethereal O atoms, was reported by Desroches et al. (2004).
In the packing, two different chains of molecules are formed by aromatic-aromatic interactions (Tsuzuki et al., 2002). One chain, with alternating orientation, extends along the a axis (Fig. 3), and is established by intermolecular offset-face-to-face π-π stackings between the phenolic rings. Separations between the centroids of the phenolic rings C19–C24 and C19–C24 at (-x, -y, -z + 1), C7–C12 and C7–C12 at (-x + 1, -y + 1, -z + 2) are 3.606 (3) and 4.488 (4) Å, respectively, and the corresponding perpendicular distances are 3.454 (2) and 3.568 (2) Å. The other chain, with tail-to-tail orientation, is running along the b axis, with intermolecular offset-face-to-face π-π contacts between the ether-substituted rings. The distance between the centroids of the rings C1–C6 and C13–C18 at (x - 1, y, z) is 4.195 (2) Å, and the corresponding perpendicular distance is 3.611 (2) Å.