organic compounds
6-Chloro-2-(thiophen-2-yl)-1-[(thiophen-2-yl)methyl]-1H-benzimidazole
aDepartment of Chemistry, State University of New York-College at Geneseo, 1 College Circle, Geneseo, NY 14454, USA
*Correspondence e-mail: geiger@geneseo.edu
The title compound, C16H11ClN2S2, co-crystallizes with a small amount of the 5-chloro- isomer. The ratio of 6-chloro- to 5-chloro- isomers is 0.969 (2):0.031 (2). One thiophen-2-yl substitutent displays rotational disorder with 80.6 (4)% of the molecules exhibiting the major orientation. In the crystal, weak C—H⋯N and C—H⋯S hydrogen-bonding interactions result in chains of molecules parallel to [001].
Related literature
For the structure of 2-(thiophen-2-yl)-1-(thiophen-2-ylmethyl)-1H-benzimidazole, see: Geiger et al. (2012). For the structure of the 5-bromo analogue, see: Geiger & Destefano (2012).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2010); cell SAINT (Bruker, 2010); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536813011124/pv2630sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536813011124/pv2630Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536813011124/pv2630Isup3.mol
Supporting information file. DOI: https://doi.org/10.1107/S1600536813011124/pv2630Isup4.cml
1,2-Diamine-4-chlorobenzene (6.3 mmol, 0.90 g) was dissolved in 30 ml ethanol under nitrogen. Two equivalents of 2-thiophenecarboxaldehyde (1.3 ml) was added dropwise. After three days, the solvent was removed under reduced pressure and the crude product was chromatographed (silica gel) using a mixture of 30% hexane in ethyl acetate. The first fraction produced hexagonal shaped crystals (1) and the second fraction produced needle-shaped crystals (2) on slow evaporation. Crystals from the first fraction were used for X-ray diffraction experiments. The overall yield was 59%.
All hydrogen atoms were observed in difference fourier maps. The H atoms were refined using a riding model with a C—H distance of 0.99 Å for the methylene carbon atoms and 0.95 Å for the phenyl and thiophene carbon atoms. All C—H hydrogen atom thermal parameters were set using the approximation Uiso = 1.2Ueq. The Cl and H atoms of the major and minor co-crystallization components were modeled as a disorder involving two parts, each containing a chlorine atom and a hydrogen atom. The major component refined to a site occupancy of 0.969 (2).
In addition, the 2-thiophene substituent is rotationally disordered. A model was developed in which the minor component of the thiophene ring was defined using the metrics of the major component as a guide. The disordered five-member rings were constrained to planarity using FLAT. Corresponding bond distances of the minor component and major component were set equal using SAME and corresponding thermal parameters were held the same using EADP. All atoms were refined anisotropically with hydrogen atoms in calculated positions using a riding model. With these constraints, the site occupancy of the major component refined to 0.806 (4).
The bond distances and angles in the title compound (Fig. 1) agree very well with the corresponding bond distances and angles reported in closely related compounds (Geiger et al., 2012; Geiger & Destefano, 2012). Crystallization of the title compound occurs with 3.1 (2)% of the sites occupied by the 5-chloro isomer. The 2-thiophene substituent is rotationally disordered with the major component having a refined occupancy of 81.0 (4)%. The benzimidazole moiety is planar (r. m. s. deviation = 0.0079 Å) with the largest deviation being for C1, which is 0.014 (3) Å out of the plane. The 2-thiophene substitutents are canted 33.2 (2)% from the benzimidazole plane for the major disorder component and 27 (1)% for the minor component.
Molecules are joined by weak C16—H16···N2 H-bonding resulting in chains parallel to [0 0 1]. The H16···N2 distance is 2.62 Å and the C16—H16···N2 angle is 136°. Weak C12—H12B···N2 and C12—H12B···S1 H-bonding joins the chains of molecules parallel to [0 0 1] (Tab. 1 & Fig. 2).
For the structure of 2-(thiophen-2-yl)-1-(thiophen-2-ylmethyl)-1H-benzimidazole, see: Geiger et al. (2012). For the structure of the 5-bromo analogue, see: Geiger & Destefano (2012).
Data collection: APEX2 (Bruker, 2010); cell
SAINT (Bruker, 2010); data reduction: SAINT (Bruker, 2010); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).C16H11ClN2S2 | F(000) = 680 |
Mr = 330.84 | Dx = 1.471 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 15.465 (3) Å | Cell parameters from 7129 reflections |
b = 6.3578 (10) Å | θ = 2.7–25.0° |
c = 15.634 (3) Å | µ = 0.53 mm−1 |
β = 103.687 (5)° | T = 200 K |
V = 1493.5 (4) Å3 | Plate, colourless |
Z = 4 | 0.80 × 0.60 × 0.20 mm |
Bruker SMART X2S CCD diffractometer | 2665 independent reflections |
Radiation source: XOS X-beam microfocus source | 2184 reflections with I > 2σ(I) |
Doubly curved silicon crystal monochromator | Rint = 0.088 |
Detector resolution: 8.3330 pixels mm-1 | θmax = 25.4°, θmin = 2.7° |
ω scans | h = −18→18 |
Absorption correction: multi-scan (SADABS; Bruker, 2010) | k = −7→7 |
Tmin = 0.62, Tmax = 0.90 | l = −18→18 |
23773 measured reflections |
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)] = 0.056 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.148 | H-atom parameters constrained |
S = 1.11 | w = 1/[σ2(Fo2) + (0.0645P)2 + 1.4022P] where P = (Fo2 + 2Fc2)/3 |
2665 reflections | (Δ/σ)max < 0.001 |
210 parameters | Δρmax = 0.49 e Å−3 |
38 restraints | Δρmin = −0.46 e Å−3 |
C16H11ClN2S2 | V = 1493.5 (4) Å3 |
Mr = 330.84 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 15.465 (3) Å | µ = 0.53 mm−1 |
b = 6.3578 (10) Å | T = 200 K |
c = 15.634 (3) Å | 0.80 × 0.60 × 0.20 mm |
β = 103.687 (5)° |
Bruker SMART X2S CCD diffractometer | 2665 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2010) | 2184 reflections with I > 2σ(I) |
Tmin = 0.62, Tmax = 0.90 | Rint = 0.088 |
23773 measured reflections |
R[F2 > 2σ(F2)] = 0.056 | 38 restraints |
wR(F2) = 0.148 | H-atom parameters constrained |
S = 1.11 | Δρmax = 0.49 e Å−3 |
2665 reflections | Δρmin = −0.46 e Å−3 |
210 parameters |
Experimental. 1H NMR spectrum (CDCl3, 400 MHz, p.p.m.): 7.71 (1 H, d), 7.53 (1 H, d), 7.48 (1 H, d), 7.34 (1 H, s), 7.28 (2 H, m), 7.17 (1 H, t), 6.96 (1 H, t), 6.91 (1 H, d), 5.60 (2 H, s). |
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 | Occ. (<1) | |
Cl1 | 0.55843 (7) | 1.26049 (17) | 0.40613 (7) | 0.0561 (3) | 0.969 (2) |
Cl01 | 0.5861 (12) | 0.817 (5) | 0.327 (2) | 0.0561 (3) | 0.031 (2) |
S1 | 0.06013 (11) | 0.5424 (3) | 0.29173 (10) | 0.0530 (5) | 0.806 (4) |
C8 | 0.1134 (4) | 0.7175 (17) | 0.3728 (6) | 0.0402 (8) | 0.806 (4) |
C9 | 0.0602 (5) | 0.7532 (12) | 0.4316 (6) | 0.054 (2) | 0.806 (4) |
H9 | 0.0787 | 0.8349 | 0.4836 | 0.065* | 0.806 (4) |
C10 | −0.0230 (4) | 0.6567 (13) | 0.4065 (5) | 0.0593 (16) | 0.806 (4) |
H10 | −0.0684 | 0.6749 | 0.4375 | 0.071* | 0.806 (4) |
C11 | −0.0327 (4) | 0.5363 (12) | 0.3347 (5) | 0.0610 (18) | 0.806 (4) |
H11 | −0.0847 | 0.4567 | 0.3103 | 0.073* | 0.806 (4) |
S101 | 0.0553 (7) | 0.8069 (15) | 0.4406 (7) | 0.0530 (5) | 0.194 (4) |
C108 | 0.1165 (15) | 0.718 (7) | 0.370 (3) | 0.0402 (8) | 0.194 (4) |
C109 | 0.0711 (18) | 0.573 (5) | 0.3138 (19) | 0.054 (2) | 0.194 (4) |
H109 | 0.0943 | 0.5069 | 0.2697 | 0.065* | 0.194 (4) |
C110 | −0.0137 (18) | 0.531 (6) | 0.327 (2) | 0.0593 (16) | 0.194 (4) |
H110 | −0.0536 | 0.4314 | 0.2936 | 0.071* | 0.194 (4) |
C111 | −0.0324 (15) | 0.647 (5) | 0.393 (2) | 0.0610 (18) | 0.194 (4) |
H111 | −0.0871 | 0.6415 | 0.4104 | 0.073* | 0.194 (4) |
S2 | 0.22671 (7) | 1.02453 (14) | 0.60821 (6) | 0.0445 (3) | |
C13 | 0.2293 (2) | 1.2089 (5) | 0.52711 (19) | 0.0334 (7) | |
C14 | 0.2588 (2) | 1.3996 (5) | 0.5637 (2) | 0.0412 (8) | |
H14 | 0.2646 | 1.5215 | 0.5304 | 0.049* | |
C15 | 0.2795 (3) | 1.3940 (6) | 0.6571 (2) | 0.0473 (9) | |
H15 | 0.3014 | 1.5117 | 0.6932 | 0.057* | |
C16 | 0.2647 (2) | 1.2027 (6) | 0.6895 (2) | 0.0464 (9) | |
H16 | 0.2745 | 1.172 | 0.7505 | 0.056* | |
N1 | 0.24103 (19) | 0.9760 (4) | 0.40255 (16) | 0.0352 (6) | |
N2 | 0.2615 (2) | 0.6596 (4) | 0.34595 (18) | 0.0414 (7) | |
C1 | 0.3275 (2) | 0.9754 (5) | 0.39196 (19) | 0.0357 (8) | |
C2 | 0.3389 (2) | 0.7765 (5) | 0.3565 (2) | 0.0397 (8) | |
C3 | 0.4206 (3) | 0.7300 (6) | 0.3371 (2) | 0.0485 (10) | |
H3 | 0.4304 | 0.597 | 0.3133 | 0.058* | |
C4 | 0.4859 (3) | 0.8794 (6) | 0.3528 (2) | 0.0482 (9) | |
H4 | 0.5416 | 0.8495 | 0.3398 | 0.058* | 0.969 (2) |
C5 | 0.4722 (2) | 1.0756 (6) | 0.3878 (2) | 0.0438 (9) | |
H5' | 0.5192 | 1.1755 | 0.3979 | 0.053* | 0.031 (2) |
C6 | 0.3929 (2) | 1.1299 (6) | 0.4083 (2) | 0.0397 (8) | |
H6 | 0.3838 | 1.2635 | 0.4319 | 0.048* | |
C7 | 0.2048 (2) | 0.7813 (5) | 0.3739 (2) | 0.0381 (8) | |
C12 | 0.1983 (2) | 1.1614 (5) | 0.4306 (2) | 0.0368 (8) | |
H12A | 0.1332 | 1.139 | 0.4162 | 0.044* | |
H12B | 0.2104 | 1.285 | 0.3967 | 0.044* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0502 (6) | 0.0575 (7) | 0.0627 (7) | 0.0008 (5) | 0.0178 (5) | 0.0148 (5) |
Cl01 | 0.0502 (6) | 0.0575 (7) | 0.0627 (7) | 0.0008 (5) | 0.0178 (5) | 0.0148 (5) |
S1 | 0.0640 (9) | 0.0371 (9) | 0.0530 (9) | 0.0065 (6) | 0.0038 (7) | −0.0067 (6) |
C8 | 0.055 (2) | 0.0272 (18) | 0.0366 (19) | 0.0077 (16) | 0.0083 (16) | 0.0024 (14) |
C9 | 0.052 (3) | 0.031 (4) | 0.084 (5) | −0.002 (3) | 0.024 (3) | −0.008 (3) |
C10 | 0.049 (3) | 0.058 (4) | 0.071 (4) | 0.002 (3) | 0.016 (3) | −0.002 (3) |
C11 | 0.056 (4) | 0.044 (3) | 0.078 (4) | 0.007 (3) | 0.005 (3) | −0.005 (3) |
S101 | 0.0640 (9) | 0.0371 (9) | 0.0530 (9) | 0.0065 (6) | 0.0038 (7) | −0.0067 (6) |
C108 | 0.055 (2) | 0.0272 (18) | 0.0366 (19) | 0.0077 (16) | 0.0083 (16) | 0.0024 (14) |
C109 | 0.052 (3) | 0.031 (4) | 0.084 (5) | −0.002 (3) | 0.024 (3) | −0.008 (3) |
C110 | 0.049 (3) | 0.058 (4) | 0.071 (4) | 0.002 (3) | 0.016 (3) | −0.002 (3) |
C111 | 0.056 (4) | 0.044 (3) | 0.078 (4) | 0.007 (3) | 0.005 (3) | −0.005 (3) |
S2 | 0.0658 (6) | 0.0309 (5) | 0.0383 (5) | 0.0023 (4) | 0.0152 (4) | 0.0043 (4) |
C13 | 0.0431 (18) | 0.0285 (18) | 0.0311 (16) | 0.0049 (14) | 0.0140 (14) | 0.0016 (13) |
C14 | 0.055 (2) | 0.035 (2) | 0.0352 (18) | −0.0048 (16) | 0.0134 (16) | 0.0021 (15) |
C15 | 0.066 (2) | 0.038 (2) | 0.0389 (19) | −0.0094 (18) | 0.0140 (17) | −0.0089 (16) |
C16 | 0.056 (2) | 0.052 (2) | 0.0334 (18) | −0.0029 (18) | 0.0134 (16) | 0.0007 (16) |
N1 | 0.0522 (17) | 0.0255 (15) | 0.0290 (14) | 0.0074 (12) | 0.0120 (12) | 0.0007 (11) |
N2 | 0.0614 (19) | 0.0277 (15) | 0.0383 (15) | 0.0089 (14) | 0.0182 (14) | −0.0002 (12) |
C1 | 0.051 (2) | 0.0329 (19) | 0.0247 (16) | 0.0087 (15) | 0.0121 (14) | 0.0065 (13) |
C2 | 0.060 (2) | 0.0323 (19) | 0.0287 (17) | 0.0121 (16) | 0.0151 (16) | 0.0060 (14) |
C3 | 0.069 (3) | 0.040 (2) | 0.042 (2) | 0.0144 (19) | 0.0252 (19) | 0.0075 (16) |
C4 | 0.055 (2) | 0.051 (2) | 0.044 (2) | 0.0177 (19) | 0.0223 (17) | 0.0109 (17) |
C5 | 0.051 (2) | 0.046 (2) | 0.0360 (18) | 0.0053 (17) | 0.0137 (16) | 0.0125 (16) |
C6 | 0.056 (2) | 0.0347 (19) | 0.0305 (17) | 0.0082 (17) | 0.0137 (15) | 0.0050 (14) |
C7 | 0.057 (2) | 0.0284 (19) | 0.0284 (16) | 0.0057 (16) | 0.0098 (15) | 0.0040 (13) |
C12 | 0.0502 (19) | 0.0261 (17) | 0.0349 (17) | 0.0099 (15) | 0.0118 (15) | 0.0019 (14) |
Cl1—C5 | 1.750 (4) | C13—C12 | 1.502 (4) |
Cl01—C4 | 1.740 (5) | C14—C15 | 1.419 (5) |
S1—C11 | 1.724 (6) | C14—H14 | 0.95 |
S1—C8 | 1.740 (7) | C15—C16 | 1.357 (5) |
C8—C9 | 1.389 (9) | C15—H15 | 0.95 |
C8—C7 | 1.468 (6) | C16—H16 | 0.95 |
C9—C10 | 1.396 (9) | N1—C1 | 1.386 (4) |
C9—H9 | 0.95 | N1—C7 | 1.388 (4) |
C10—C11 | 1.337 (7) | N1—C12 | 1.468 (4) |
C10—H10 | 0.95 | N2—C7 | 1.319 (4) |
C11—H11 | 0.95 | N2—C2 | 1.385 (5) |
S101—C108 | 1.707 (18) | C1—C6 | 1.389 (5) |
S101—C111 | 1.717 (17) | C1—C2 | 1.408 (5) |
C108—C109 | 1.351 (17) | C2—C3 | 1.399 (5) |
C108—C7 | 1.411 (15) | C3—C4 | 1.366 (5) |
C109—C110 | 1.401 (17) | C3—H3 | 0.95 |
C109—H109 | 0.95 | C4—C5 | 1.398 (5) |
C110—C111 | 1.352 (16) | C4—H4 | 0.95 |
C110—H110 | 0.95 | C5—C6 | 1.383 (5) |
C111—H111 | 0.95 | C5—H5' | 0.95 |
S2—C16 | 1.700 (4) | C6—H6 | 0.95 |
S2—C13 | 1.734 (3) | C12—H12A | 0.99 |
C13—C14 | 1.372 (5) | C12—H12B | 0.99 |
C11—S1—C8 | 91.4 (3) | S2—C16—H16 | 123.9 |
C9—C8—C7 | 131.8 (6) | C1—N1—C7 | 106.6 (3) |
C9—C8—S1 | 109.5 (4) | C1—N1—C12 | 123.5 (3) |
C7—C8—S1 | 118.3 (4) | C7—N1—C12 | 129.6 (3) |
C8—C9—C10 | 113.1 (7) | C7—N2—C2 | 105.6 (3) |
C8—C9—H9 | 123.4 | N1—C1—C6 | 131.1 (3) |
C10—C9—H9 | 123.4 | N1—C1—C2 | 105.2 (3) |
C11—C10—C9 | 113.6 (6) | C6—C1—C2 | 123.7 (3) |
C11—C10—H10 | 123.2 | N2—C2—C3 | 131.3 (3) |
C9—C10—H10 | 123.2 | N2—C2—C1 | 110.1 (3) |
C10—C11—S1 | 112.0 (5) | C3—C2—C1 | 118.6 (3) |
C10—C11—H11 | 124.0 | C4—C3—C2 | 118.8 (3) |
S1—C11—H11 | 124.0 | C4—C3—H3 | 120.6 |
C108—S101—C111 | 91.5 (11) | C2—C3—H3 | 120.6 |
C109—C108—C7 | 124.7 (18) | C3—C4—C5 | 121.2 (3) |
C109—C108—S101 | 111.3 (12) | C3—C4—Cl01 | 117.4 (12) |
C7—C108—S101 | 123.9 (16) | C5—C4—Cl01 | 121.4 (12) |
C108—C109—C110 | 113.3 (16) | C3—C4—H4 | 119.4 |
C108—C109—H109 | 123.4 | C5—C4—H4 | 119.4 |
C110—C109—H109 | 123.4 | C6—C5—C4 | 122.5 (3) |
C111—C110—C109 | 112.5 (19) | C6—C5—Cl1 | 118.5 (3) |
C111—C110—H110 | 123.7 | C4—C5—Cl1 | 118.9 (3) |
C109—C110—H110 | 123.7 | C6—C5—H5' | 118.7 |
C110—C111—S101 | 111.4 (17) | C4—C5—H5' | 118.7 |
C110—C111—H111 | 124.3 | C5—C6—C1 | 115.3 (3) |
S101—C111—H111 | 124.3 | C5—C6—H6 | 122.3 |
C16—S2—C13 | 91.85 (17) | C1—C6—H6 | 122.3 |
C14—C13—C12 | 126.3 (3) | N2—C7—N1 | 112.4 (3) |
C14—C13—S2 | 110.8 (2) | N2—C7—C108 | 122.2 (13) |
C12—C13—S2 | 122.8 (2) | N1—C7—C108 | 125.3 (14) |
C13—C14—C15 | 112.3 (3) | N2—C7—C8 | 123.3 (4) |
C13—C14—H14 | 123.9 | N1—C7—C8 | 124.3 (4) |
C15—C14—H14 | 123.9 | N1—C12—C13 | 113.7 (3) |
C16—C15—C14 | 112.9 (3) | N1—C12—H12A | 108.8 |
C16—C15—H15 | 123.6 | C13—C12—H12A | 108.8 |
C14—C15—H15 | 123.6 | N1—C12—H12B | 108.8 |
C15—C16—S2 | 112.2 (3) | C13—C12—H12B | 108.8 |
C15—C16—H16 | 123.9 | H12A—C12—H12B | 107.7 |
C11—S1—C8—C9 | 3.5 (8) | C2—C3—C4—Cl01 | −179.3 (12) |
C11—S1—C8—C7 | 177.2 (8) | C3—C4—C5—C6 | 0.0 (5) |
C7—C8—C9—C10 | −177.9 (10) | Cl01—C4—C5—C6 | 179.4 (13) |
S1—C8—C9—C10 | −5.3 (11) | C3—C4—C5—Cl1 | −179.8 (3) |
C8—C9—C10—C11 | 4.8 (9) | Cl01—C4—C5—Cl1 | −0.4 (13) |
C9—C10—C11—S1 | −2.0 (6) | C4—C5—C6—C1 | 0.2 (5) |
C8—S1—C11—C10 | −0.9 (6) | Cl1—C5—C6—C1 | 180.0 (2) |
C111—S101—C108—C109 | 0 (3) | N1—C1—C6—C5 | −178.5 (3) |
C111—S101—C108—C7 | −177 (4) | C2—C1—C6—C5 | −0.4 (5) |
C7—C108—C109—C110 | 177 (4) | C2—N2—C7—N1 | 0.2 (4) |
S101—C108—C109—C110 | 0 (4) | C2—N2—C7—C108 | 177 (2) |
C108—C109—C110—C111 | 1 (4) | C2—N2—C7—C8 | 179.1 (6) |
C109—C110—C111—S101 | −1.2 (17) | C1—N1—C7—N2 | −0.2 (3) |
C108—S101—C111—C110 | 0.9 (16) | C12—N1—C7—N2 | 173.8 (3) |
C16—S2—C13—C14 | 0.0 (3) | C1—N1—C7—C108 | −177 (2) |
C16—S2—C13—C12 | −177.1 (3) | C12—N1—C7—C108 | −3 (2) |
C12—C13—C14—C15 | 177.4 (3) | C1—N1—C7—C8 | −179.1 (6) |
S2—C13—C14—C15 | 0.4 (4) | C12—N1—C7—C8 | −5.1 (7) |
C13—C14—C15—C16 | −0.7 (5) | C109—C108—C7—N2 | −24 (5) |
C14—C15—C16—S2 | 0.7 (4) | S101—C108—C7—N2 | 152 (2) |
C13—S2—C16—C15 | −0.4 (3) | C109—C108—C7—N1 | 153 (3) |
C7—N1—C1—C6 | 178.5 (3) | S101—C108—C7—N1 | −31 (5) |
C12—N1—C1—C6 | 4.1 (5) | C109—C108—C7—C8 | −150.90 |
C7—N1—C1—C2 | 0.2 (3) | S101—C108—C7—C8 | 20.80 |
C12—N1—C1—C2 | −174.3 (3) | C9—C8—C7—N2 | 142.3 (10) |
C7—N2—C2—C3 | −179.0 (3) | S1—C8—C7—N2 | −29.7 (11) |
C7—N2—C2—C1 | −0.1 (4) | C9—C8—C7—N1 | −39.0 (15) |
N1—C1—C2—N2 | −0.1 (3) | S1—C8—C7—N1 | 149.0 (5) |
C6—C1—C2—N2 | −178.6 (3) | C9—C8—C7—C108 | −170.80 |
N1—C1—C2—C3 | 179.0 (3) | S1—C8—C7—C108 | 20.80 |
C6—C1—C2—C3 | 0.5 (5) | C1—N1—C12—C13 | −75.6 (4) |
N2—C2—C3—C4 | 178.5 (3) | C7—N1—C12—C13 | 111.3 (4) |
C1—C2—C3—C4 | −0.3 (5) | C14—C13—C12—N1 | 129.4 (3) |
C2—C3—C4—C5 | 0.0 (5) | S2—C13—C12—N1 | −54.0 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
C16—H16···N2i | 0.95 | 2.62 | 3.369 (4) | 136 |
C12—H12B···N2ii | 0.99 | 2.69 | 3.654 (4) | 165 |
C12—H12B···S1ii | 0.99 | 2.99 | 3.599 (4) | 120 |
Symmetry codes: (i) x, −y+3/2, z+1/2; (ii) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C16H11ClN2S2 |
Mr | 330.84 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 200 |
a, b, c (Å) | 15.465 (3), 6.3578 (10), 15.634 (3) |
β (°) | 103.687 (5) |
V (Å3) | 1493.5 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.53 |
Crystal size (mm) | 0.80 × 0.60 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART X2S CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2010) |
Tmin, Tmax | 0.62, 0.90 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 23773, 2665, 2184 |
Rint | 0.088 |
(sin θ/λ)max (Å−1) | 0.602 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.056, 0.148, 1.11 |
No. of reflections | 2665 |
No. of parameters | 210 |
No. of restraints | 38 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.49, −0.46 |
Computer programs: APEX2 (Bruker, 2010), SAINT (Bruker, 2010), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009) and Mercury (Macrae et al., 2008), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
C16—H16···N2i | 0.95 | 2.62 | 3.369 (4) | 136.3 |
C12—H12B···N2ii | 0.99 | 2.69 | 3.654 (4) | 165.3 |
C12—H12B···S1ii | 0.99 | 2.99 | 3.599 (4) | 120.4 |
Symmetry codes: (i) x, −y+3/2, z+1/2; (ii) x, y+1, z. |
Acknowledgements
This work was supported by a Congressionally directed grant from the US Department of Education (grant No. P116Z100020) for the X-ray diffractometer and a grant from the Geneseo Foundation. MRN thanks Dr Bruce Ristow for a summer research fellowship administered by the Geneseo Foundation.
References
Bruker (2010). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Geiger, D. K. & Destefano, M. R. (2012). Acta Cryst. E68, o3123. CSD CrossRef IUCr Journals Google Scholar
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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
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The bond distances and angles in the title compound (Fig. 1) agree very well with the corresponding bond distances and angles reported in closely related compounds (Geiger et al., 2012; Geiger & Destefano, 2012). Crystallization of the title compound occurs with 3.1 (2)% of the sites occupied by the 5-chloro isomer. The 2-thiophene substituent is rotationally disordered with the major component having a refined occupancy of 81.0 (4)%. The benzimidazole moiety is planar (r. m. s. deviation = 0.0079 Å) with the largest deviation being for C1, which is 0.014 (3) Å out of the plane. The 2-thiophene substitutents are canted 33.2 (2)% from the benzimidazole plane for the major disorder component and 27 (1)% for the minor component.
Molecules are joined by weak C16—H16···N2 H-bonding resulting in chains parallel to [0 0 1]. The H16···N2 distance is 2.62 Å and the C16—H16···N2 angle is 136°. Weak C12—H12B···N2 and C12—H12B···S1 H-bonding joins the chains of molecules parallel to [0 0 1] (Tab. 1 & Fig. 2).