organic compounds
4-Chloro-N-[3-methyl-1-(5-thioxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)butyl]benzamide
aDepartment of Medicinal Chemistry, NanChang University School of Pharmaceutical Science, 330006 NanChang, JiangXi, People's Republic of China
*Correspondence e-mail: tugg199@yahoo.com
In the title compound, C14H16ClN3O2S, the dihedral angle between the 4-chlorophenyl and 1,3,4-oxadiazole rings is 67.1 (1)° and the orientation of the amide N—H and C=O bonds is anti. In the crystal, molecules are linked by N—H⋯O and N—H⋯S hydrogen bonds.
Related literature
For the biological properties of thiadiazoles, see: Tu et al. (2008). For details of the synthesis, see: Ginzel et al. (1989); Boland et al. (2006); Havaldar & Patil (2009); Shriner & Furrow (1955). For related structures, see: Du et al. (2004); Ziyaev et al. (1992); Zareef et al. (2006).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); 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 and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536810017368/hb5439sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810017368/hb5439Isup2.hkl
To a stirred solution of DL-leucine methyl ester hydrochloride (0.03 mol) in CH2Cl2 (20 ml) was added triethylamine (0.06 mol) at 273 K. After 0.5 h, a solution of p-chlorobenzoic acid chloride (0.03 mol) in CH2Cl2 (10 ml) was added. The mixture was stirred for 2 h at 273 K, then allowed to warm to r.t. for 24 h. Washed with 10% HCl, 1 N NaOH and water. The organic layer was evaporated in vacuo and the residue was recrystallized from methanol to give corresponding
as a white solid.A mixture of the
(0.02 mol) and 80% hydrazine monohydrate (0.04 mol) in absolute methanol (20 ml) was heated under reflux over night. After cooling, a white solid was separated and recrystallized from methanol to give corresponding hydrazide.A mixture of the hydrazide (0.01 mol), KOH (0.01 mol), CS2 (0.05 mol), and ethanol (70 ml) was heated under reflux with stirring for 12 h. Ethanol was distilled off under reduced pressure and the residue was dissolved in water and then acidified with 10% HCl. The resulting precipitate was filtered, washed with water, and recrystallized from ethanol. Colourless blocks of (I) precipitated after several days.
H atoms were positioned geometrically and refined using a riding model using SHELXL97 default values (Uiso(H) = 1.2 Ueq(C) for CH and CH2 groups and Uiso(H) = 1.5 Ueq(C) for CH3).
The present oxadiazole derivate is in continuation to our previous work of the thiadiazole scaffold compounds and their biological activity (Tu et al., 2008). The title compound (Figure 1) was synthesized according to literature procedures (Ginzel et al., 1989; Boland et al., 2006; Havaldar & Patil 2009). Here, we report the structure of the title compound.
The oxadiazole ring is essentially planar and is inclined at 67.1 (1)° with respect to the p-cholobenzene ring. The N2=C2 and S1=C1 double bonds agree with the corresponding distances in three structures containing similar systems (Du et al., 2004; Ziyaev et al., 1992; Zareef et al., 2006). The conformations of the N—H and C=O bonds are anti with respect to each other. The structure is stabilized by a network of intermolecular hydrogen bonds of the type N—H···S (Table 1, Figure 2).
For the biological properties of thiadiazoles, see: Tu et al. (2008). For details of the synthesis, see: Ginzel et al. (1989); Boland et al. (2006); Havaldar & Patil (2009). For related structures, see: Du et al. (2004); Ziyaev et al. (1992); Zareef et al. (2006). For related literature [on what subject?], see: Shriner & Furrow (1955).
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); 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) and publCIF (Westrip, 2010).C14H16ClN3O2S | F(000) = 680 |
Mr = 325.81 | Dx = 1.294 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 2117 reflections |
a = 6.0171 (6) Å | θ = 2.6–21.7° |
b = 15.3120 (15) Å | µ = 0.36 mm−1 |
c = 18.1493 (17) Å | T = 298 K |
V = 1672.2 (3) Å3 | Block, colourless |
Z = 4 | 0.42 × 0.22 × 0.18 mm |
Bruker SMART CCD diffractometer | 2951 independent reflections |
Radiation source: fine-focus sealed tube | 1447 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.056 |
ω scans | θmax = 25.0°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −7→7 |
Tmin = 0.864, Tmax = 0.938 | k = −18→11 |
7892 measured reflections | l = −21→16 |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.050 | w = 1/[σ2(Fo2) + (0.0147P)2 + 1.0529P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.108 | (Δ/σ)max < 0.001 |
S = 1.10 | Δρmax = 0.31 e Å−3 |
2951 reflections | Δρmin = −0.32 e Å−3 |
193 parameters | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
0 restraints | Extinction coefficient: 0.0034 (7) |
Primary atom site location: structure-invariant direct methods | Absolute structure: Flack (1983), 1219 Friedel pairs |
Secondary atom site location: difference Fourier map | Absolute structure parameter: −0.09 (14) |
C14H16ClN3O2S | V = 1672.2 (3) Å3 |
Mr = 325.81 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 6.0171 (6) Å | µ = 0.36 mm−1 |
b = 15.3120 (15) Å | T = 298 K |
c = 18.1493 (17) Å | 0.42 × 0.22 × 0.18 mm |
Bruker SMART CCD diffractometer | 2951 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1447 reflections with I > 2σ(I) |
Tmin = 0.864, Tmax = 0.938 | Rint = 0.056 |
7892 measured reflections |
R[F2 > 2σ(F2)] = 0.050 | H-atom parameters constrained |
wR(F2) = 0.108 | Δρmax = 0.31 e Å−3 |
S = 1.10 | Δρmin = −0.32 e Å−3 |
2951 reflections | Absolute structure: Flack (1983), 1219 Friedel pairs |
193 parameters | Absolute structure parameter: −0.09 (14) |
0 restraints |
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 > 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 | ||
Cl1 | 1.2875 (3) | 0.07537 (10) | −0.04447 (8) | 0.1082 (7) | |
N1 | 0.4961 (8) | 0.5638 (3) | 0.2486 (2) | 0.0653 (12) | |
H1 | 0.4553 | 0.6175 | 0.2515 | 0.078* | |
N2 | 0.6705 (8) | 0.5299 (2) | 0.2891 (2) | 0.0679 (12) | |
N3 | 0.9177 (6) | 0.3351 (2) | 0.22952 (19) | 0.0530 (10) | |
H3 | 1.0323 | 0.3577 | 0.2086 | 0.064* | |
O1 | 0.5141 (6) | 0.4303 (2) | 0.21792 (16) | 0.0650 (10) | |
O2 | 0.6632 (6) | 0.22820 (19) | 0.23058 (17) | 0.0672 (10) | |
S1 | 0.1860 (3) | 0.51382 (10) | 0.14928 (8) | 0.0902 (5) | |
C1 | 0.3976 (8) | 0.5066 (3) | 0.2049 (2) | 0.0601 (13) | |
C2 | 0.6745 (10) | 0.4498 (3) | 0.2683 (2) | 0.0555 (13) | |
C3 | 0.8216 (9) | 0.3780 (3) | 0.2935 (2) | 0.0572 (13) | |
H3A | 0.7295 | 0.3352 | 0.3195 | 0.069* | |
C4 | 0.9999 (9) | 0.4102 (3) | 0.3469 (2) | 0.0628 (14) | |
H4A | 1.0827 | 0.4567 | 0.3233 | 0.075* | |
H4B | 0.9271 | 0.4348 | 0.3898 | 0.075* | |
C5 | 1.1631 (10) | 0.3406 (3) | 0.3725 (3) | 0.0793 (17) | |
H5 | 1.2452 | 0.3206 | 0.3290 | 0.095* | |
C6 | 1.3329 (10) | 0.3803 (4) | 0.4260 (3) | 0.097 (2) | |
H6A | 1.2604 | 0.3948 | 0.4715 | 0.145* | |
H6B | 1.3955 | 0.4321 | 0.4046 | 0.145* | |
H6C | 1.4490 | 0.3387 | 0.4353 | 0.145* | |
C7 | 1.0511 (12) | 0.2623 (4) | 0.4053 (3) | 0.129 (3) | |
H7A | 0.9645 | 0.2799 | 0.4471 | 0.193* | |
H7B | 1.1615 | 0.2208 | 0.4205 | 0.193* | |
H7C | 0.9557 | 0.2360 | 0.3692 | 0.193* | |
C8 | 0.8305 (9) | 0.2601 (3) | 0.2021 (2) | 0.0520 (12) | |
C9 | 0.9491 (9) | 0.2185 (3) | 0.1398 (3) | 0.0518 (13) | |
C10 | 0.8393 (9) | 0.1520 (3) | 0.1025 (2) | 0.0575 (13) | |
H10 | 0.6966 | 0.1359 | 0.1168 | 0.069* | |
C11 | 0.9413 (10) | 0.1093 (3) | 0.0440 (3) | 0.0673 (15) | |
H11 | 0.8661 | 0.0660 | 0.0181 | 0.081* | |
C12 | 1.1541 (11) | 0.1319 (3) | 0.0247 (3) | 0.0663 (15) | |
C13 | 1.2613 (9) | 0.1986 (3) | 0.0598 (3) | 0.0681 (15) | |
H13 | 1.4027 | 0.2153 | 0.0446 | 0.082* | |
C14 | 1.1604 (9) | 0.2411 (3) | 0.1174 (3) | 0.0639 (14) | |
H14 | 1.2355 | 0.2858 | 0.1416 | 0.077* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1383 (16) | 0.0987 (12) | 0.0876 (10) | 0.0156 (12) | 0.0383 (11) | −0.0126 (9) |
N1 | 0.069 (3) | 0.046 (3) | 0.081 (3) | 0.002 (3) | −0.002 (3) | −0.005 (2) |
N2 | 0.078 (3) | 0.047 (3) | 0.079 (3) | 0.005 (3) | −0.012 (3) | −0.004 (2) |
N3 | 0.050 (3) | 0.044 (2) | 0.066 (3) | −0.006 (2) | 0.007 (2) | −0.0108 (19) |
O1 | 0.079 (3) | 0.045 (2) | 0.071 (2) | 0.002 (2) | −0.019 (2) | −0.0068 (17) |
O2 | 0.069 (3) | 0.046 (2) | 0.086 (2) | −0.004 (2) | 0.016 (2) | −0.0039 (17) |
S1 | 0.0914 (12) | 0.0756 (10) | 0.1037 (11) | −0.0050 (10) | −0.0315 (10) | 0.0091 (9) |
C1 | 0.064 (4) | 0.058 (3) | 0.058 (3) | −0.009 (3) | −0.004 (3) | −0.002 (3) |
C2 | 0.074 (4) | 0.037 (3) | 0.056 (3) | 0.004 (3) | 0.001 (3) | −0.005 (2) |
C3 | 0.072 (4) | 0.046 (3) | 0.053 (3) | 0.001 (3) | 0.009 (3) | −0.002 (2) |
C4 | 0.074 (4) | 0.056 (3) | 0.058 (3) | 0.001 (3) | −0.007 (3) | −0.004 (3) |
C5 | 0.088 (5) | 0.075 (4) | 0.074 (4) | 0.001 (4) | −0.015 (4) | 0.007 (3) |
C6 | 0.094 (5) | 0.109 (5) | 0.088 (4) | 0.010 (4) | −0.017 (4) | 0.003 (3) |
C7 | 0.140 (7) | 0.092 (5) | 0.154 (6) | −0.018 (5) | −0.040 (5) | 0.056 (5) |
C8 | 0.056 (3) | 0.043 (3) | 0.057 (3) | 0.000 (3) | 0.000 (3) | 0.001 (2) |
C9 | 0.057 (3) | 0.037 (3) | 0.062 (3) | −0.002 (3) | −0.006 (3) | −0.003 (2) |
C10 | 0.062 (4) | 0.044 (3) | 0.067 (3) | −0.004 (3) | 0.001 (3) | 0.002 (2) |
C11 | 0.097 (5) | 0.048 (3) | 0.056 (3) | 0.001 (3) | −0.001 (3) | −0.001 (3) |
C12 | 0.084 (5) | 0.055 (3) | 0.059 (3) | 0.011 (4) | 0.007 (3) | 0.005 (3) |
C13 | 0.063 (4) | 0.068 (4) | 0.074 (3) | 0.005 (3) | 0.014 (3) | 0.006 (3) |
C14 | 0.067 (4) | 0.051 (3) | 0.074 (3) | −0.003 (3) | −0.002 (3) | 0.000 (3) |
Cl1—C12 | 1.723 (5) | C5—C6 | 1.535 (7) |
N1—C1 | 1.321 (5) | C5—H5 | 0.9800 |
N1—N2 | 1.382 (5) | C6—H6A | 0.9600 |
N1—H1 | 0.8600 | C6—H6B | 0.9600 |
N2—C2 | 1.283 (5) | C6—H6C | 0.9600 |
N3—C8 | 1.357 (5) | C7—H7A | 0.9600 |
N3—C3 | 1.454 (5) | C7—H7B | 0.9600 |
N3—H3 | 0.8600 | C7—H7C | 0.9600 |
O1—C2 | 1.363 (5) | C8—C9 | 1.481 (6) |
O1—C1 | 1.382 (5) | C9—C14 | 1.379 (6) |
O2—C8 | 1.232 (5) | C9—C10 | 1.390 (6) |
S1—C1 | 1.629 (5) | C10—C11 | 1.390 (6) |
C2—C3 | 1.483 (6) | C10—H10 | 0.9300 |
C3—C4 | 1.527 (6) | C11—C12 | 1.372 (7) |
C3—H3A | 0.9800 | C11—H11 | 0.9300 |
C4—C5 | 1.522 (6) | C12—C13 | 1.366 (6) |
C4—H4A | 0.9700 | C13—C14 | 1.373 (6) |
C4—H4B | 0.9700 | C13—H13 | 0.9300 |
C5—C7 | 1.498 (7) | C14—H14 | 0.9300 |
C1—N1—N2 | 114.3 (4) | C5—C6—H6B | 109.5 |
C1—N1—H1 | 122.9 | H6A—C6—H6B | 109.5 |
N2—N1—H1 | 122.9 | C5—C6—H6C | 109.5 |
C2—N2—N1 | 102.5 (4) | H6A—C6—H6C | 109.5 |
C8—N3—C3 | 121.5 (4) | H6B—C6—H6C | 109.5 |
C8—N3—H3 | 119.3 | C5—C7—H7A | 109.5 |
C3—N3—H3 | 119.3 | C5—C7—H7B | 109.5 |
C2—O1—C1 | 106.8 (3) | H7A—C7—H7B | 109.5 |
N1—C1—O1 | 103.3 (4) | C5—C7—H7C | 109.5 |
N1—C1—S1 | 132.6 (4) | H7A—C7—H7C | 109.5 |
O1—C1—S1 | 124.0 (4) | H7B—C7—H7C | 109.5 |
N2—C2—O1 | 113.1 (5) | O2—C8—N3 | 119.8 (4) |
N2—C2—C3 | 128.9 (5) | O2—C8—C9 | 122.9 (4) |
O1—C2—C3 | 117.9 (4) | N3—C8—C9 | 117.2 (4) |
N3—C3—C2 | 109.0 (3) | C14—C9—C10 | 118.6 (5) |
N3—C3—C4 | 111.9 (4) | C14—C9—C8 | 124.2 (4) |
C2—C3—C4 | 112.1 (4) | C10—C9—C8 | 117.3 (5) |
N3—C3—H3A | 107.9 | C11—C10—C9 | 120.4 (5) |
C2—C3—H3A | 107.9 | C11—C10—H10 | 119.8 |
C4—C3—H3A | 107.9 | C9—C10—H10 | 119.8 |
C5—C4—C3 | 114.9 (4) | C12—C11—C10 | 119.3 (5) |
C5—C4—H4A | 108.5 | C12—C11—H11 | 120.4 |
C3—C4—H4A | 108.5 | C10—C11—H11 | 120.4 |
C5—C4—H4B | 108.5 | C13—C12—C11 | 120.7 (5) |
C3—C4—H4B | 108.5 | C13—C12—Cl1 | 119.7 (5) |
H4A—C4—H4B | 107.5 | C11—C12—Cl1 | 119.6 (5) |
C7—C5—C4 | 113.0 (5) | C12—C13—C14 | 120.1 (5) |
C7—C5—C6 | 111.4 (5) | C12—C13—H13 | 120.0 |
C4—C5—C6 | 110.2 (4) | C14—C13—H13 | 120.0 |
C7—C5—H5 | 107.3 | C13—C14—C9 | 120.9 (5) |
C4—C5—H5 | 107.3 | C13—C14—H14 | 119.6 |
C6—C5—H5 | 107.3 | C9—C14—H14 | 119.6 |
C5—C6—H6A | 109.5 | ||
C1—N1—N2—C2 | 0.1 (6) | C3—C4—C5—C6 | −179.7 (4) |
N2—N1—C1—O1 | 0.3 (5) | C3—N3—C8—O2 | 1.7 (7) |
N2—N1—C1—S1 | 178.2 (4) | C3—N3—C8—C9 | −176.2 (4) |
C2—O1—C1—N1 | −0.5 (5) | O2—C8—C9—C14 | −165.1 (4) |
C2—O1—C1—S1 | −178.7 (3) | N3—C8—C9—C14 | 12.7 (7) |
N1—N2—C2—O1 | −0.5 (5) | O2—C8—C9—C10 | 14.3 (7) |
N1—N2—C2—C3 | −178.1 (5) | N3—C8—C9—C10 | −167.9 (4) |
C1—O1—C2—N2 | 0.7 (5) | C14—C9—C10—C11 | 0.1 (7) |
C1—O1—C2—C3 | 178.6 (4) | C8—C9—C10—C11 | −179.3 (4) |
C8—N3—C3—C2 | −98.1 (5) | C9—C10—C11—C12 | 1.8 (7) |
C8—N3—C3—C4 | 137.4 (4) | C10—C11—C12—C13 | −3.5 (7) |
N2—C2—C3—N3 | −129.7 (5) | C10—C11—C12—Cl1 | 176.5 (3) |
O1—C2—C3—N3 | 52.8 (6) | C11—C12—C13—C14 | 3.2 (8) |
N2—C2—C3—C4 | −5.2 (8) | Cl1—C12—C13—C14 | −176.7 (4) |
O1—C2—C3—C4 | 177.2 (4) | C12—C13—C14—C9 | −1.2 (7) |
N3—C3—C4—C5 | −54.7 (6) | C10—C9—C14—C13 | −0.4 (7) |
C2—C3—C4—C5 | −177.5 (4) | C8—C9—C14—C13 | 178.9 (4) |
C3—C4—C5—C7 | −54.3 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O2i | 0.86 | 1.87 | 2.720 (6) | 171 |
N3—H3···S1ii | 0.86 | 2.78 | 3.495 (4) | 142 |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C14H16ClN3O2S |
Mr | 325.81 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 298 |
a, b, c (Å) | 6.0171 (6), 15.3120 (15), 18.1493 (17) |
V (Å3) | 1672.2 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.36 |
Crystal size (mm) | 0.42 × 0.22 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.864, 0.938 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7892, 2951, 1447 |
Rint | 0.056 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.050, 0.108, 1.10 |
No. of reflections | 2951 |
No. of parameters | 193 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.31, −0.32 |
Absolute structure | Flack (1983), 1219 Friedel pairs |
Absolute structure parameter | −0.09 (14) |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O2i | 0.86 | 1.87 | 2.720 (6) | 171 |
N3—H3···S1ii | 0.86 | 2.78 | 3.495 (4) | 142 |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) x+1, y, z. |
Acknowledgements
The work was supported by the Key Technologies R & D Program of JiangXi (grant No. 20061B0100400), the Key Science & Technology Program of JiangXi (grant No. 2009BSA14100) and the Scientific Research Fund of NanChang University.
References
Boland, Y., Hertsens, P., Marchand-Brynaert, J. & Garcia, Y. (2006). Synthesis, pp. 1504–1512. Google Scholar
Bruker (2001). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Du, M., Zhao, X.-J. & Guo, J.-H. (2004). Acta Cryst. E60, o327–o328. Web of Science CSD CrossRef IUCr Journals Google Scholar
Flack, H. D. (1983). Acta Cryst. A39, 876–881. CrossRef CAS Web of Science IUCr Journals Google Scholar
Ginzel, K. D., Brungs, P. & Steckhan, E. (1989). Tetrahedron, 45, 1691–1701. CrossRef CAS Web of Science Google Scholar
Havaldar, F. H. & Patil, A. R. (2009). Asian J. Chem. 21, 5267–5272. CAS Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Shriner, R. L. & Furrow, C. L. (1955). Org. Synth. 35, 49–50. CAS Google Scholar
Tu, G. G., Li, S. H., Huang, H. M., Li, G., Xiong, F., Mai, X., Zhu, H. W., Kuang, B. H. & Xu, W. F. (2008). Bioorg. Med. Chem. 16, 6663–6668. Web of Science CrossRef PubMed CAS Google Scholar
Westrip, S. P. (2010). J. Appl. Cryst. 43. Submitted. Google Scholar
Zareef, M., Iqbal, R., Zaidi, J. H., Arfan, M. & Parvez, M. (2006). Acta Cryst. E62, o2481–o2483. CSD CrossRef IUCr Journals Google Scholar
Ziyaev, A. A., Galust'yan, G. G., Sabirov, K., Nasirov, S., Tashkhodzhaev, B. & Yag'budaev, M. R. (1992). Zh. Org. Khim. 28, 1538–1543. CAS Google Scholar
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The present oxadiazole derivate is in continuation to our previous work of the thiadiazole scaffold compounds and their biological activity (Tu et al., 2008). The title compound (Figure 1) was synthesized according to literature procedures (Ginzel et al., 1989; Boland et al., 2006; Havaldar & Patil 2009). Here, we report the structure of the title compound.
The oxadiazole ring is essentially planar and is inclined at 67.1 (1)° with respect to the p-cholobenzene ring. The N2=C2 and S1=C1 double bonds agree with the corresponding distances in three structures containing similar systems (Du et al., 2004; Ziyaev et al., 1992; Zareef et al., 2006). The conformations of the N—H and C=O bonds are anti with respect to each other. The structure is stabilized by a network of intermolecular hydrogen bonds of the type N—H···S (Table 1, Figure 2).