organic compounds
(2E)-4-(4-Bromophenyl)-2-{2-[(1E)-cyclopentylidene]hydrazin-1-ylidene}-3-phenyl-2,3-dihydro-1,3-thiazole
aDepartment of Chemistry, Tulane University, New Orleans, LA 70118, USA, bChemistry and Environmental Division, Manchester Metropolitan University, Manchester, M1 5GD, England, cChemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt, dDepartment of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey, and eKirkuk University, College of Science, Department of Chemistry, Kirkuk, Iraq
*Correspondence e-mail: shaabankamel@yahoo.com
In the title compound, C20H18BrN3S, the cyclopentane ring adopts a half-chair conformation. The 4-bromophenyl and phenyl rings make dihedral angles of 34.6 (1) and 68.52 (6)°, respectively, with the dihydrothiazole ring. In the crystal, the molecules pack in sheets approximately parallel to (101) which are formed by weak C—H⋯Br interactions
CCDC reference: 1002511
Related literature
For variuos medicinal applications of thiazole scaffold compounds, see: Mahajan et al. (2008); Abbs et al. (2008); Chowki et al. (2008); Karabasanagouda et al. (2008); Basavaraja et al. (2008); Bhusari et al. (2000); Basawaraj et al. (2005). For similar structures, see: Akkurt et al. (2014); Mague et al. (2014); Mohamed et al. (2013). For ring conformations, see: Cremer & Pople (1975).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2013); cell SAINT (Bruker, 2013); data reduction: SAINT; program(s) used to solve structure: SHELXT (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Putz, 2012); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
Supporting information
CCDC reference: 1002511
10.1107/S1600536814010897/qm2107sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814010897/qm2107Isup2.hkl
A mixture of 1 mmol (233 mg) of cyclopentan-1-one N-phenylthiosemicarbazone and 1 mmol (278 mg) of 2-bromo-1-(4-bromophenyl)ethanone in 30 ml e thanol was stirred and refluxed at 350 K. The reaction was monitored by TLC until completion. On cooling, a solid yellow product precipitated which was filtered off and recrystallized from ethanol to furnish yellow crystals, suitable for X-ray diffraction.
H-atoms were placed in calculated positions (C—H = 0.95 - 0.99 Å) and included as riding contributions with isotropic displacement parameters 1.2 times those of the attached carbon atoms. At the conclusion of
with all atoms at unit occupancy, the largest difference peak appeared in the vicinity of Br1. of this as a second component of a disorder of Br1 led to improvement in the results and a more realistic value for U(iso) for Br1. The geometry associated with the minor component (Br1A) suggests that there is a small amount of "whole molecule" disorder but since the refined occupancy of Br1A is only 0.02, there is not enough information from the final difference map to reliably position the remainder of the minor component.Data collection: APEX2 (Bruker, 2013); cell
SAINT (Bruker, 2013); data reduction: SAINT (Bruker, 2013); program(s) used to solve structure: SHELXT (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Putz, 2012); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The title compound with 50% probability displacement ellipsoids for non-hydrogen atoms. | |
Fig. 2. Packing viewed down the b axis with the C—H···Br interactions shown as dotted lines. |
C20H18BrN3S | F(000) = 840 |
Mr = 412.34 | Dx = 1.560 Mg m−3 |
Monoclinic, P21/c | Cu Kα radiation, λ = 1.54178 Å |
a = 12.5079 (3) Å | Cell parameters from 8908 reflections |
b = 5.5728 (1) Å | θ = 3.5–72.3° |
c = 25.3761 (6) Å | µ = 4.35 mm−1 |
β = 96.8480 (11)° | T = 100 K |
V = 1756.20 (7) Å3 | Plate, yellow |
Z = 4 | 0.10 × 0.08 × 0.02 mm |
Bruker D8 VENTURE PHOTON 100 CMOS diffractometer | 3409 independent reflections |
Radiation source: INCOATEC IµS micro–focus source | 2960 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.033 |
Detector resolution: 10.4167 pixels mm-1 | θmax = 72.3°, θmin = 3.5° |
ω scans | h = −14→15 |
Absorption correction: multi-scan (SADABS; Bruker, 2013) | k = −6→6 |
Tmin = 0.80, Tmax = 0.92 | l = −31→29 |
12815 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)] = 0.030 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.072 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0367P)2 + 0.942P] where P = (Fo2 + 2Fc2)/3 |
3409 reflections | (Δ/σ)max = 0.004 |
230 parameters | Δρmax = 0.89 e Å−3 |
1 restraint | Δρmin = −0.26 e Å−3 |
C20H18BrN3S | V = 1756.20 (7) Å3 |
Mr = 412.34 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 12.5079 (3) Å | µ = 4.35 mm−1 |
b = 5.5728 (1) Å | T = 100 K |
c = 25.3761 (6) Å | 0.10 × 0.08 × 0.02 mm |
β = 96.8480 (11)° |
Bruker D8 VENTURE PHOTON 100 CMOS diffractometer | 3409 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2013) | 2960 reflections with I > 2σ(I) |
Tmin = 0.80, Tmax = 0.92 | Rint = 0.033 |
12815 measured reflections |
R[F2 > 2σ(F2)] = 0.030 | 1 restraint |
wR(F2) = 0.072 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.89 e Å−3 |
3409 reflections | Δρmin = −0.26 e Å−3 |
230 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. H-atoms were placed in calculated positions (C—H = 0.95 - 0.99 Å) and included as riding contributions with isotropic displacement parameters 1.2 times those of the attached carbon atoms. At the conclusion of refinement with all atoms at unit occupancy, the largest difference peak appeared in the vicinity of Br1. Refinement of this as a second component of a disorder of Br1 led to improvement in the results and a more realistic value for U(iso) for Br1. The geometry associated with the minor component (Br1A) suggests that there is a small amount of "whole molecule" disorder but since the refined occupancy of Br1A is only 0.02, there is not enough information from the final difference map to reliably position the remainder of the minor component. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Br1 | 0.85490 (2) | −0.31880 (7) | 0.43991 (2) | 0.02218 (11) | 0.982 (1) |
Br1A | 0.8563 (12) | −0.201 (4) | 0.4313 (4) | 0.02218 (11) | 0.0182 (11) |
S1 | 0.94129 (4) | 0.58669 (10) | 0.71625 (2) | 0.01954 (13) | |
N1 | 0.77696 (15) | 0.4902 (3) | 0.64754 (7) | 0.0186 (4) | |
N2 | 0.74281 (16) | 0.7923 (4) | 0.70865 (8) | 0.0219 (4) | |
N3 | 0.80239 (15) | 0.9247 (4) | 0.75009 (7) | 0.0219 (4) | |
C1 | 0.85169 (18) | −0.1224 (4) | 0.50103 (9) | 0.0188 (4) | |
C2 | 0.91130 (18) | −0.1876 (4) | 0.54836 (9) | 0.0206 (5) | |
H2 | 0.9528 | −0.3308 | 0.5507 | 0.025* | |
C3 | 0.90938 (18) | −0.0397 (4) | 0.59242 (9) | 0.0192 (4) | |
H3 | 0.9493 | −0.0842 | 0.6252 | 0.023* | |
C4 | 0.84970 (17) | 0.1732 (4) | 0.58934 (8) | 0.0173 (4) | |
C5 | 0.79033 (19) | 0.2330 (4) | 0.54094 (9) | 0.0197 (5) | |
H5 | 0.7492 | 0.3767 | 0.5382 | 0.024* | |
C6 | 0.79050 (19) | 0.0856 (4) | 0.49681 (9) | 0.0209 (5) | |
H6 | 0.7492 | 0.1267 | 0.4642 | 0.025* | |
C7 | 0.86033 (18) | 0.3344 (4) | 0.63585 (9) | 0.0180 (4) | |
C8 | 0.95119 (19) | 0.3650 (4) | 0.66889 (9) | 0.0194 (5) | |
H8 | 1.0148 | 0.2744 | 0.6666 | 0.023* | |
C9 | 0.80684 (18) | 0.6404 (4) | 0.69039 (8) | 0.0183 (4) | |
C10 | 0.66773 (18) | 0.4827 (4) | 0.62245 (8) | 0.0187 (4) | |
C11 | 0.6062 (2) | 0.2806 (4) | 0.62887 (9) | 0.0225 (5) | |
H11 | 0.6344 | 0.1517 | 0.6508 | 0.027* | |
C12 | 0.5018 (2) | 0.2708 (4) | 0.60235 (10) | 0.0265 (5) | |
H12 | 0.4580 | 0.1343 | 0.6065 | 0.032* | |
C13 | 0.46162 (19) | 0.4581 (5) | 0.57017 (10) | 0.0278 (5) | |
H13 | 0.3908 | 0.4490 | 0.5520 | 0.033* | |
C14 | 0.5245 (2) | 0.6597 (4) | 0.56423 (9) | 0.0254 (5) | |
H14 | 0.4968 | 0.7879 | 0.5420 | 0.030* | |
C15 | 0.62813 (19) | 0.6735 (4) | 0.59085 (9) | 0.0219 (5) | |
H15 | 0.6712 | 0.8117 | 0.5874 | 0.026* | |
C16 | 0.74531 (18) | 1.0603 (4) | 0.77618 (9) | 0.0202 (5) | |
C17 | 0.79575 (19) | 1.2288 (4) | 0.81892 (9) | 0.0211 (5) | |
H17A | 0.8308 | 1.3662 | 0.8032 | 0.025* | |
H17B | 0.8499 | 1.1441 | 0.8439 | 0.025* | |
C18 | 0.70068 (19) | 1.3126 (5) | 0.84697 (10) | 0.0270 (5) | |
H18A | 0.7132 | 1.4763 | 0.8616 | 0.032* | |
H18B | 0.6882 | 1.2020 | 0.8762 | 0.032* | |
C19 | 0.6054 (2) | 1.3094 (5) | 0.80314 (10) | 0.0282 (5) | |
H19A | 0.6050 | 1.4549 | 0.7807 | 0.034* | |
H19B | 0.5363 | 1.2994 | 0.8184 | 0.034* | |
C20 | 0.62414 (19) | 1.0838 (5) | 0.77104 (9) | 0.0248 (5) | |
H20A | 0.5911 | 0.9414 | 0.7859 | 0.030* | |
H20B | 0.5938 | 1.1032 | 0.7334 | 0.030* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.02681 (14) | 0.0192 (2) | 0.02079 (13) | 0.00088 (11) | 0.00395 (9) | −0.00472 (11) |
Br1A | 0.02681 (14) | 0.0192 (2) | 0.02079 (13) | 0.00088 (11) | 0.00395 (9) | −0.00472 (11) |
S1 | 0.0204 (3) | 0.0212 (3) | 0.0163 (3) | 0.0003 (2) | −0.0011 (2) | −0.00170 (19) |
N1 | 0.0182 (9) | 0.0184 (9) | 0.0186 (9) | 0.0008 (7) | 0.0001 (7) | −0.0038 (7) |
N2 | 0.0215 (10) | 0.0251 (10) | 0.0185 (9) | 0.0000 (8) | −0.0002 (8) | −0.0061 (8) |
N3 | 0.0217 (10) | 0.0249 (10) | 0.0182 (9) | −0.0002 (8) | −0.0008 (8) | −0.0037 (8) |
C1 | 0.0206 (11) | 0.0158 (10) | 0.0205 (11) | −0.0037 (9) | 0.0044 (9) | −0.0035 (8) |
C2 | 0.0203 (11) | 0.0176 (10) | 0.0240 (11) | 0.0003 (9) | 0.0029 (9) | 0.0018 (9) |
C3 | 0.0193 (11) | 0.0187 (10) | 0.0195 (11) | 0.0000 (9) | 0.0015 (9) | 0.0034 (8) |
C4 | 0.0168 (10) | 0.0182 (10) | 0.0167 (10) | −0.0021 (9) | 0.0017 (8) | 0.0008 (8) |
C5 | 0.0225 (11) | 0.0167 (10) | 0.0198 (11) | 0.0035 (9) | 0.0017 (9) | 0.0004 (8) |
C6 | 0.0237 (12) | 0.0210 (11) | 0.0172 (11) | 0.0020 (9) | −0.0005 (9) | 0.0007 (8) |
C7 | 0.0207 (11) | 0.0160 (10) | 0.0173 (10) | 0.0006 (9) | 0.0027 (8) | 0.0021 (8) |
C8 | 0.0221 (11) | 0.0181 (10) | 0.0179 (11) | 0.0011 (9) | 0.0020 (9) | −0.0007 (8) |
C9 | 0.0201 (11) | 0.0183 (10) | 0.0157 (10) | −0.0020 (9) | −0.0012 (9) | 0.0006 (8) |
C10 | 0.0197 (11) | 0.0194 (11) | 0.0171 (10) | −0.0006 (9) | 0.0028 (9) | −0.0041 (8) |
C11 | 0.0264 (12) | 0.0206 (11) | 0.0212 (11) | −0.0027 (10) | 0.0059 (9) | −0.0005 (9) |
C12 | 0.0235 (12) | 0.0260 (12) | 0.0313 (13) | −0.0069 (10) | 0.0089 (10) | −0.0064 (10) |
C13 | 0.0181 (11) | 0.0361 (14) | 0.0286 (13) | 0.0007 (11) | 0.0001 (10) | −0.0095 (10) |
C14 | 0.0250 (12) | 0.0270 (12) | 0.0228 (11) | 0.0070 (10) | −0.0022 (10) | −0.0020 (9) |
C15 | 0.0226 (12) | 0.0196 (11) | 0.0236 (11) | −0.0012 (9) | 0.0028 (9) | −0.0022 (9) |
C16 | 0.0217 (11) | 0.0207 (11) | 0.0176 (11) | −0.0015 (9) | 0.0002 (9) | −0.0004 (8) |
C17 | 0.0220 (11) | 0.0236 (11) | 0.0174 (11) | −0.0024 (9) | 0.0015 (9) | −0.0029 (8) |
C18 | 0.0245 (12) | 0.0329 (13) | 0.0233 (12) | 0.0004 (11) | 0.0024 (10) | −0.0082 (10) |
C19 | 0.0240 (12) | 0.0339 (13) | 0.0264 (12) | 0.0056 (11) | 0.0017 (10) | −0.0062 (10) |
C20 | 0.0221 (12) | 0.0299 (13) | 0.0222 (11) | −0.0009 (10) | 0.0014 (9) | −0.0056 (9) |
Br1—C1 | 1.903 (2) | C10—C15 | 1.387 (3) |
Br1A—C1 | 1.830 (8) | C11—C12 | 1.397 (4) |
S1—C8 | 1.738 (2) | C11—H11 | 0.9500 |
S1—C9 | 1.756 (2) | C12—C13 | 1.382 (4) |
N1—C9 | 1.388 (3) | C12—H12 | 0.9500 |
N1—C7 | 1.415 (3) | C13—C14 | 1.390 (4) |
N1—C10 | 1.437 (3) | C13—H13 | 0.9500 |
N2—C9 | 1.289 (3) | C14—C15 | 1.390 (3) |
N2—N3 | 1.421 (3) | C14—H14 | 0.9500 |
N3—C16 | 1.277 (3) | C15—H15 | 0.9500 |
C1—C2 | 1.385 (3) | C16—C20 | 1.511 (3) |
C1—C6 | 1.386 (3) | C16—C17 | 1.514 (3) |
C2—C3 | 1.391 (3) | C17—C18 | 1.530 (3) |
C2—H2 | 0.9500 | C17—H17A | 0.9900 |
C3—C4 | 1.399 (3) | C17—H17B | 0.9900 |
C3—H3 | 0.9500 | C18—C19 | 1.530 (3) |
C4—C5 | 1.398 (3) | C18—H18A | 0.9900 |
C4—C7 | 1.476 (3) | C18—H18B | 0.9900 |
C5—C6 | 1.389 (3) | C19—C20 | 1.531 (3) |
C5—H5 | 0.9500 | C19—H19A | 0.9900 |
C6—H6 | 0.9500 | C19—H19B | 0.9900 |
C7—C8 | 1.340 (3) | C20—H20A | 0.9900 |
C8—H8 | 0.9500 | C20—H20B | 0.9900 |
C10—C11 | 1.384 (3) | ||
C8—S1—C9 | 90.38 (11) | C12—C11—H11 | 120.8 |
C9—N1—C7 | 113.44 (18) | C13—C12—C11 | 120.5 (2) |
C9—N1—C10 | 121.16 (18) | C13—C12—H12 | 119.7 |
C7—N1—C10 | 125.08 (18) | C11—C12—H12 | 119.7 |
C9—N2—N3 | 108.28 (19) | C12—C13—C14 | 120.2 (2) |
C16—N3—N2 | 114.49 (19) | C12—C13—H13 | 119.9 |
C2—C1—C6 | 121.5 (2) | C14—C13—H13 | 119.9 |
C2—C1—Br1A | 134.4 (6) | C15—C14—C13 | 119.9 (2) |
C6—C1—Br1A | 102.0 (7) | C15—C14—H14 | 120.0 |
C2—C1—Br1 | 119.64 (17) | C13—C14—H14 | 120.0 |
C6—C1—Br1 | 118.90 (17) | C10—C15—C14 | 119.1 (2) |
C1—C2—C3 | 118.9 (2) | C10—C15—H15 | 120.4 |
C1—C2—H2 | 120.6 | C14—C15—H15 | 120.4 |
C3—C2—H2 | 120.6 | N3—C16—C20 | 128.6 (2) |
C2—C3—C4 | 121.2 (2) | N3—C16—C17 | 121.8 (2) |
C2—C3—H3 | 119.4 | C20—C16—C17 | 109.62 (19) |
C4—C3—H3 | 119.4 | C16—C17—C18 | 104.01 (19) |
C5—C4—C3 | 118.4 (2) | C16—C17—H17A | 111.0 |
C5—C4—C7 | 123.0 (2) | C18—C17—H17A | 111.0 |
C3—C4—C7 | 118.35 (19) | C16—C17—H17B | 111.0 |
C6—C5—C4 | 121.0 (2) | C18—C17—H17B | 111.0 |
C6—C5—H5 | 119.5 | H17A—C17—H17B | 109.0 |
C4—C5—H5 | 119.5 | C17—C18—C19 | 103.86 (19) |
C1—C6—C5 | 119.1 (2) | C17—C18—H18A | 111.0 |
C1—C6—H6 | 120.5 | C19—C18—H18A | 111.0 |
C5—C6—H6 | 120.5 | C17—C18—H18B | 111.0 |
C8—C7—N1 | 112.5 (2) | C19—C18—H18B | 111.0 |
C8—C7—C4 | 124.5 (2) | H18A—C18—H18B | 109.0 |
N1—C7—C4 | 122.84 (19) | C18—C19—C20 | 103.9 (2) |
C7—C8—S1 | 113.45 (17) | C18—C19—H19A | 111.0 |
C7—C8—H8 | 123.3 | C20—C19—H19A | 111.0 |
S1—C8—H8 | 123.3 | C18—C19—H19B | 111.0 |
N2—C9—N1 | 123.8 (2) | C20—C19—H19B | 111.0 |
N2—C9—S1 | 125.86 (17) | H19A—C19—H19B | 109.0 |
N1—C9—S1 | 110.27 (16) | C16—C20—C19 | 103.95 (19) |
C11—C10—C15 | 121.8 (2) | C16—C20—H20A | 111.0 |
C11—C10—N1 | 118.9 (2) | C19—C20—H20A | 111.0 |
C15—C10—N1 | 119.3 (2) | C16—C20—H20B | 111.0 |
C10—C11—C12 | 118.4 (2) | C19—C20—H20B | 111.0 |
C10—C11—H11 | 120.8 | H20A—C20—H20B | 109.0 |
C9—N2—N3—C16 | −171.4 (2) | C10—N1—C9—N2 | −4.5 (3) |
C6—C1—C2—C3 | −0.1 (3) | C7—N1—C9—S1 | 0.2 (2) |
Br1A—C1—C2—C3 | 159.7 (10) | C10—N1—C9—S1 | 174.06 (16) |
Br1—C1—C2—C3 | 178.96 (16) | C8—S1—C9—N2 | 178.2 (2) |
C1—C2—C3—C4 | −0.8 (3) | C8—S1—C9—N1 | −0.31 (17) |
C2—C3—C4—C5 | 1.0 (3) | C9—N1—C10—C11 | −109.5 (2) |
C2—C3—C4—C7 | −173.6 (2) | C7—N1—C10—C11 | 63.6 (3) |
C3—C4—C5—C6 | −0.2 (3) | C9—N1—C10—C15 | 73.0 (3) |
C7—C4—C5—C6 | 174.1 (2) | C7—N1—C10—C15 | −113.9 (2) |
C2—C1—C6—C5 | 0.9 (3) | C15—C10—C11—C12 | 0.3 (3) |
Br1A—C1—C6—C5 | −164.5 (6) | N1—C10—C11—C12 | −177.2 (2) |
Br1—C1—C6—C5 | −178.20 (17) | C10—C11—C12—C13 | 0.6 (3) |
C4—C5—C6—C1 | −0.7 (3) | C11—C12—C13—C14 | −0.6 (4) |
C9—N1—C7—C8 | 0.0 (3) | C12—C13—C14—C15 | −0.2 (4) |
C10—N1—C7—C8 | −173.5 (2) | C11—C10—C15—C14 | −1.1 (3) |
C9—N1—C7—C4 | −174.9 (2) | N1—C10—C15—C14 | 176.4 (2) |
C10—N1—C7—C4 | 11.6 (3) | C13—C14—C15—C10 | 1.0 (3) |
C5—C4—C7—C8 | −140.5 (2) | N2—N3—C16—C20 | 4.6 (3) |
C3—C4—C7—C8 | 33.8 (3) | N2—N3—C16—C17 | −175.20 (19) |
C5—C4—C7—N1 | 33.8 (3) | N3—C16—C17—C18 | −168.4 (2) |
C3—C4—C7—N1 | −151.9 (2) | C20—C16—C17—C18 | 11.8 (3) |
N1—C7—C8—S1 | −0.3 (2) | C16—C17—C18—C19 | −31.0 (2) |
C4—C7—C8—S1 | 174.50 (17) | C17—C18—C19—C20 | 38.9 (3) |
C9—S1—C8—C7 | 0.35 (18) | N3—C16—C20—C19 | −167.8 (2) |
N3—N2—C9—N1 | −176.3 (2) | C17—C16—C20—C19 | 12.1 (3) |
N3—N2—C9—S1 | 5.4 (3) | C18—C19—C20—C16 | −31.2 (2) |
C7—N1—C9—N2 | −178.3 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C17—H17B···Br1i | 0.99 | 3.03 | 3.828 (2) | 138 |
Symmetry code: (i) x, −y+1/2, z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C17—H17B···Br1i | 0.99 | 3.03 | 3.828 (2) | 138 |
Symmetry code: (i) x, −y+1/2, z+1/2. |
Acknowledgements
The support of NSF–MRI grant No. 1228232 for the purchase of the diffractometer 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.
The anti-microbial activities of substituted thiazoles are well established because they possess the (S—C=N) toxophoric unit (Mahajan et al., 2008). Thiazoles were reported to possess anti-cancer (Abbs et al., 2008), anti-tubercular (Chowki et al., 2008), anti-inflammatory (Karabasanagouda et al., 2008), analgesic (Basavaraja et al., 2008) anthelmintic (Bhusari et al., 2000) and diuretic (Basawaraj et al., 2005) activities. Based on these facts and as part of our on-going study we herein report the synthesis and crystal structure of the title compound.
In the title compound (I, Fig. 1), the cyclopentane ring (C16–C20) adopts a half-chair conformation with puckering parameters of Q(2) = 0.375 (3) Å, ϕ (2) = 270.2 (4) ° (Cremer & Pople, 1975). The dihydrothiazole ring (S1/N1/C7–C9) is essentially planar [max. deviations = -0.002 (2) Å for C8 and C9] and it makes dihedral angles of 34.6 (1) and 68.52 (6)%, respectively, with the 4-bromophenyl (C1–C6) and (C10–C15) phenyl rings. All bond lengths and angles in (I) are normal and comparable with those reported for similar structures (Mohamed et al., 2013; Mague et al., 2014; Akkurt et al., 2014).
In the crystal, the molecules of (I) pack in sheets approximately parallel to (101) which are formed by weak C—H···Br interactions (Table 1, Fig. 2).