organic compounds
2-(2,4-Dichlorophenyl)-3-[5-(3,5-dimethylphenyl)-1,3,4-thiadiazol-2-yl]thiazolidin-4-one
aDepartment of Applied Chemistry, College of Science, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing 210009, People's Republic of China
*Correspondence e-mail: jswanrong@163.com
The title compound, C19H15Cl2N3OS2, was synthesized by the reaction of N-(2,4-dichlorophenyl)-5-(3,5-dimethylphenyl)-1,3,4-thiadiazol-2-amine and mercaptoacetic acid. The thiazolidinone ring adopts a twist conformation. The 2,4-dichlorophenyl ring is almost perpendicular to the thiadiazole ring, the dihedral angle being 82.8 (2)°. The 3,5-dimethylphenyl ring is nearly coplanar with the thiadiazole ring, the dihedral angle being 2.7 (2)°. An intramolecular C—H⋯N hydrogen bond is present.
Related literature
For general background, see: Arun et al. (1999); Chen et al. (2000); Kidwai et al. (2000); Vicentini et al. (1998); Wasfy et al. (1996). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell CAD-4 Software; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Siemens, 1996); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536807066068/rn2029sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807066068/rn2029Isup2.hkl
N-(2,4-dichlorobenzylidene)-5-(3,5-dimethylphenyl)-1,3,4-thiadiazol -2-amine (5 mmol) and mercapto-acetic acid (5 mmol) were added in toluene (50 ml). The water was removed by distillation for 5 h. The reaction mixture was left to cool to room temperature, filtered, and the filter cake was crystallized from acetone to give pure compound (I) (m.p. 476–477 K). Crystals of (I) suitable for X-ray diffraction were obtained by slow evaporation of an acetone solution.
All H atoms bonded to the C atoms were placed geometrically at the distances of 0.93–0.97 Å and constrained to ride on their parent atoms with Uiso(H) = xUeq(C), where x = 1.2 for aromatic H and x = 1.5 for methyl H atoms. The methyl groups were allowed to rotate.
1,3,4-Thiadiazole derivatives containing the thiazolidinone unit are of great interest because of their chemical and pharmaceutical properties. Some derivatives have fungicidal activities and exhibit certain herbicidal activities (Chen et al., 2000; Kidwai et al., 2000; Vicentini et al., 1998). Some show insecticidal activities (Arun et al., 1999; Wasfy et al., 1996). We report here the
of the titled compound, (I).The molecular structure of (I) is shown in Fig.1. In this structure, the thiazolidinone adopts a twist conformation, the dihedral angle between the C11/S1/C12 and C11/N3/C12 is 24.4 (4)°. The thiadiazole ring (S2/C9/N1/N2/C10) is an aromatic heterocyclic ring, all atoms are in the same plane. The angle between the thiadiazole ring and the 3,5-dimethylphenyl ring is 2.7 (2)°. The other benzene ring (C14/C15/C16/C17/C18/C19) is nearly perpendicular to the thiadiazole ring, the dihedral angle is 82.8 (2)°. The molecule has a C—H···N intramolecular hydrogen bond.
For general background, see: Arun et al. (1999); Chen et al. (2000); Kidwai et al. (2000); Vicentini et al. (1998); Wasfy et al. (1996). For bond-length data, see: Allen et al. (1987).
Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell
CAD-4 Software (Enraf–Nonius, 1989); data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Siemens,1996); software used to prepare material for publication: SHELXL97 (Sheldrick, 1997).Fig. 1. The crystal structure of (I). Dashed lines indicate intramolecular C—H···N hydrogen bond. |
C19H15Cl2N3OS2 | Z = 2 |
Mr = 436.36 | F(000) = 448 |
Triclinic, P1 | Dx = 1.514 Mg m−3 |
Hall symbol: -P 1 | Melting point = 476–477 K |
a = 8.1760 (16) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 9.1650 (18) Å | Cell parameters from 25 reflections |
c = 14.483 (3) Å | θ = 10–14° |
α = 80.60 (3)° | µ = 0.57 mm−1 |
β = 80.82 (3)° | T = 298 K |
γ = 63.92 (3)° | Block, light yellow |
V = 956.9 (4) Å3 | 0.40 × 0.30 × 0.20 mm |
Enraf–Nonius CAD-4 diffractometer | 2824 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.044 |
Graphite monochromator | θmax = 26.0°, θmin = 1.4° |
ω/2θ scans | h = −9→10 |
Absorption correction: ψ scan (North et al., 1968) | k = −11→11 |
Tmin = 0.803, Tmax = 0.894 | l = 0→17 |
4042 measured reflections | 3 standard reflections every 200 reflections |
3761 independent reflections | intensity decay: none |
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)] = 0.055 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.165 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.05P)2 + 2.5P] where P = (Fo2 + 2Fc2)/3 |
3761 reflections | (Δ/σ)max < 0.001 |
244 parameters | Δρmax = 0.42 e Å−3 |
0 restraints | Δρmin = −0.45 e Å−3 |
C19H15Cl2N3OS2 | γ = 63.92 (3)° |
Mr = 436.36 | V = 956.9 (4) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.1760 (16) Å | Mo Kα radiation |
b = 9.1650 (18) Å | µ = 0.57 mm−1 |
c = 14.483 (3) Å | T = 298 K |
α = 80.60 (3)° | 0.40 × 0.30 × 0.20 mm |
β = 80.82 (3)° |
Enraf–Nonius CAD-4 diffractometer | 2824 reflections with I > 2σ(I) |
Absorption correction: ψ scan (North et al., 1968) | Rint = 0.044 |
Tmin = 0.803, Tmax = 0.894 | 3 standard reflections every 200 reflections |
4042 measured reflections | intensity decay: none |
3761 independent reflections |
R[F2 > 2σ(F2)] = 0.055 | 0 restraints |
wR(F2) = 0.165 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.42 e Å−3 |
3761 reflections | Δρmin = −0.45 e Å−3 |
244 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 | ||
Cl1 | 0.6127 (2) | 0.7754 (2) | −0.14356 (11) | 0.0843 (5) | |
Cl2 | 1.25961 (17) | 0.62298 (16) | −0.02409 (9) | 0.0667 (4) | |
S1 | 1.13265 (18) | 0.90179 (17) | 0.12924 (9) | 0.0626 (4) | |
S2 | 0.80372 (16) | 0.67126 (13) | 0.42066 (7) | 0.0469 (3) | |
O | 0.7989 (6) | 0.9660 (4) | 0.3520 (3) | 0.0818 (12) | |
N1 | 0.9137 (5) | 0.4033 (4) | 0.3485 (2) | 0.0522 (9) | |
N2 | 0.9641 (5) | 0.5066 (4) | 0.2796 (2) | 0.0523 (9) | |
N3 | 0.9527 (5) | 0.7697 (4) | 0.2528 (2) | 0.0487 (8) | |
C1 | 0.7096 (8) | −0.0041 (6) | 0.5859 (4) | 0.0672 (13) | |
H1B | 0.6622 | −0.0377 | 0.6465 | 0.101* | |
H1C | 0.8348 | −0.0796 | 0.5727 | 0.101* | |
H1D | 0.6386 | −0.0023 | 0.5386 | 0.101* | |
C2 | 0.6989 (6) | 0.1640 (6) | 0.5861 (3) | 0.0514 (11) | |
C3 | 0.7698 (6) | 0.2378 (5) | 0.5073 (3) | 0.0469 (10) | |
H3A | 0.8261 | 0.1815 | 0.4547 | 0.056* | |
C4 | 0.7565 (6) | 0.3936 (5) | 0.5074 (3) | 0.0439 (9) | |
C5 | 0.6693 (6) | 0.4783 (6) | 0.5844 (3) | 0.0496 (10) | |
H5A | 0.6602 | 0.5831 | 0.5842 | 0.059* | |
C6 | 0.5944 (6) | 0.4091 (6) | 0.6629 (3) | 0.0486 (10) | |
C7 | 0.6134 (6) | 0.2527 (6) | 0.6616 (3) | 0.0527 (11) | |
H7A | 0.5664 | 0.2048 | 0.7140 | 0.063* | |
C8 | 0.4899 (7) | 0.5073 (7) | 0.7442 (3) | 0.0698 (14) | |
H8A | 0.4485 | 0.4418 | 0.7920 | 0.105* | |
H8B | 0.3863 | 0.6025 | 0.7226 | 0.105* | |
H8C | 0.5683 | 0.5402 | 0.7698 | 0.105* | |
C9 | 0.8307 (5) | 0.4717 (5) | 0.4236 (3) | 0.0409 (9) | |
C10 | 0.9149 (6) | 0.6481 (5) | 0.3094 (3) | 0.0443 (9) | |
C11 | 1.0540 (6) | 0.7385 (5) | 0.1604 (3) | 0.0480 (10) | |
H11A | 1.1602 | 0.6323 | 0.1651 | 0.058* | |
C12 | 0.9563 (9) | 1.0308 (7) | 0.2078 (4) | 0.0745 (16) | |
H12A | 1.0026 | 1.0901 | 0.2380 | 0.089* | |
H12B | 0.8546 | 1.1093 | 0.1738 | 0.089* | |
C13 | 0.8942 (7) | 0.9217 (6) | 0.2809 (3) | 0.0576 (12) | |
C14 | 0.9401 (6) | 0.7419 (5) | 0.0871 (3) | 0.0431 (9) | |
C15 | 0.7515 (6) | 0.7987 (5) | 0.1026 (3) | 0.0500 (10) | |
H15A | 0.6923 | 0.8314 | 0.1610 | 0.060* | |
C16 | 0.6505 (6) | 0.8074 (6) | 0.0324 (3) | 0.0532 (11) | |
H16A | 0.5239 | 0.8462 | 0.0431 | 0.064* | |
C17 | 0.7404 (7) | 0.7576 (5) | −0.0542 (3) | 0.0538 (11) | |
C18 | 0.9264 (6) | 0.6968 (5) | −0.0713 (3) | 0.0505 (10) | |
H18A | 0.9855 | 0.6604 | −0.1290 | 0.061* | |
C19 | 1.0239 (6) | 0.6911 (5) | −0.0003 (3) | 0.0461 (10) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.1062 (12) | 0.1000 (11) | 0.0749 (9) | −0.0627 (10) | −0.0278 (8) | −0.0105 (8) |
Cl2 | 0.0586 (7) | 0.0700 (8) | 0.0645 (8) | −0.0285 (6) | 0.0135 (6) | −0.0046 (6) |
S1 | 0.0718 (8) | 0.0738 (8) | 0.0616 (7) | −0.0531 (7) | −0.0053 (6) | 0.0051 (6) |
S2 | 0.0603 (7) | 0.0507 (6) | 0.0407 (5) | −0.0345 (5) | −0.0035 (5) | −0.0034 (4) |
O | 0.130 (3) | 0.067 (2) | 0.062 (2) | −0.061 (2) | 0.020 (2) | −0.0169 (18) |
N1 | 0.071 (2) | 0.051 (2) | 0.0410 (19) | −0.0354 (19) | 0.0016 (17) | 0.0019 (16) |
N2 | 0.064 (2) | 0.050 (2) | 0.046 (2) | −0.0316 (18) | 0.0043 (17) | −0.0019 (16) |
N3 | 0.060 (2) | 0.049 (2) | 0.0456 (19) | −0.0339 (18) | −0.0029 (16) | −0.0006 (16) |
C1 | 0.079 (3) | 0.058 (3) | 0.066 (3) | −0.037 (3) | 0.006 (3) | 0.000 (2) |
C2 | 0.063 (3) | 0.065 (3) | 0.041 (2) | −0.042 (2) | −0.007 (2) | 0.003 (2) |
C3 | 0.056 (2) | 0.055 (2) | 0.037 (2) | −0.032 (2) | 0.0002 (18) | −0.0044 (18) |
C4 | 0.048 (2) | 0.053 (2) | 0.041 (2) | −0.0301 (19) | −0.0090 (17) | 0.0004 (18) |
C5 | 0.057 (3) | 0.059 (3) | 0.047 (2) | −0.035 (2) | −0.0089 (19) | −0.006 (2) |
C6 | 0.046 (2) | 0.070 (3) | 0.039 (2) | −0.032 (2) | −0.0046 (17) | −0.009 (2) |
C7 | 0.061 (3) | 0.078 (3) | 0.038 (2) | −0.049 (2) | −0.0068 (19) | 0.005 (2) |
C8 | 0.075 (3) | 0.095 (4) | 0.056 (3) | −0.049 (3) | 0.009 (2) | −0.028 (3) |
C9 | 0.039 (2) | 0.048 (2) | 0.040 (2) | −0.0232 (18) | −0.0042 (16) | −0.0029 (17) |
C10 | 0.058 (2) | 0.052 (2) | 0.034 (2) | −0.035 (2) | −0.0088 (17) | 0.0044 (17) |
C11 | 0.053 (2) | 0.053 (2) | 0.043 (2) | −0.031 (2) | 0.0003 (18) | 0.0011 (18) |
C12 | 0.114 (5) | 0.069 (3) | 0.062 (3) | −0.064 (3) | −0.001 (3) | 0.002 (3) |
C13 | 0.080 (3) | 0.052 (3) | 0.053 (3) | −0.043 (2) | −0.001 (2) | 0.000 (2) |
C14 | 0.051 (2) | 0.040 (2) | 0.042 (2) | −0.0264 (18) | −0.0002 (18) | 0.0020 (17) |
C15 | 0.056 (3) | 0.059 (3) | 0.043 (2) | −0.035 (2) | −0.0004 (19) | −0.0006 (19) |
C16 | 0.046 (2) | 0.058 (3) | 0.059 (3) | −0.027 (2) | −0.002 (2) | −0.004 (2) |
C17 | 0.075 (3) | 0.052 (3) | 0.053 (3) | −0.043 (2) | −0.007 (2) | −0.004 (2) |
C18 | 0.071 (3) | 0.040 (2) | 0.048 (2) | −0.033 (2) | 0.005 (2) | −0.0052 (18) |
C19 | 0.055 (2) | 0.040 (2) | 0.047 (2) | −0.0287 (19) | 0.0016 (19) | 0.0013 (17) |
Cl1—C17 | 1.734 (5) | C5—C6 | 1.398 (6) |
Cl2—C19 | 1.739 (4) | C5—H5A | 0.9300 |
S1—C12 | 1.786 (6) | C6—C7 | 1.375 (6) |
S1—C11 | 1.841 (4) | C6—C8 | 1.509 (6) |
S2—C10 | 1.716 (4) | C7—H7A | 0.9300 |
S2—C9 | 1.738 (4) | C8—H8A | 0.9600 |
O—C13 | 1.198 (6) | C8—H8B | 0.9600 |
N1—C9 | 1.285 (5) | C8—H8C | 0.9600 |
N1—N2 | 1.401 (5) | C11—C14 | 1.507 (6) |
N2—C10 | 1.303 (5) | C11—H11A | 0.9800 |
N3—C13 | 1.368 (6) | C12—C13 | 1.518 (6) |
N3—C10 | 1.391 (5) | C12—H12A | 0.9700 |
N3—C11 | 1.458 (5) | C12—H12B | 0.9700 |
C1—C2 | 1.504 (6) | C14—C15 | 1.386 (6) |
C1—H1B | 0.9600 | C14—C19 | 1.388 (6) |
C1—H1C | 0.9600 | C15—C16 | 1.380 (6) |
C1—H1D | 0.9600 | C15—H15A | 0.9300 |
C2—C7 | 1.376 (6) | C16—C17 | 1.385 (6) |
C2—C3 | 1.406 (6) | C16—H16A | 0.9300 |
C3—C4 | 1.383 (6) | C17—C18 | 1.365 (6) |
C3—H3A | 0.9300 | C18—C19 | 1.378 (6) |
C4—C5 | 1.378 (6) | C18—H18A | 0.9300 |
C4—C9 | 1.488 (5) | ||
C12—S1—C11 | 92.2 (2) | N1—C9—S2 | 114.6 (3) |
C10—S2—C9 | 86.20 (19) | C4—C9—S2 | 120.6 (3) |
C9—N1—N2 | 112.7 (3) | N2—C10—N3 | 120.8 (4) |
C10—N2—N1 | 110.8 (3) | N2—C10—S2 | 115.7 (3) |
C13—N3—C10 | 121.6 (4) | N3—C10—S2 | 123.5 (3) |
C13—N3—C11 | 118.1 (3) | N3—C11—C14 | 113.4 (3) |
C10—N3—C11 | 120.2 (3) | N3—C11—S1 | 104.4 (3) |
C2—C1—H1B | 109.5 | C14—C11—S1 | 110.7 (3) |
C2—C1—H1C | 109.5 | N3—C11—H11A | 109.4 |
H1B—C1—H1C | 109.5 | C14—C11—H11A | 109.4 |
C2—C1—H1D | 109.5 | S1—C11—H11A | 109.4 |
H1B—C1—H1D | 109.5 | C13—C12—S1 | 107.3 (4) |
H1C—C1—H1D | 109.5 | C13—C12—H12A | 110.3 |
C7—C2—C3 | 117.9 (4) | S1—C12—H12A | 110.3 |
C7—C2—C1 | 121.2 (4) | C13—C12—H12B | 110.3 |
C3—C2—C1 | 120.9 (4) | S1—C12—H12B | 110.3 |
C4—C3—C2 | 120.5 (4) | H12A—C12—H12B | 108.5 |
C4—C3—H3A | 119.8 | O—C13—N3 | 124.4 (4) |
C2—C3—H3A | 119.8 | O—C13—C12 | 124.1 (4) |
C5—C4—C3 | 119.7 (4) | N3—C13—C12 | 111.5 (4) |
C5—C4—C9 | 120.0 (4) | C15—C14—C19 | 117.8 (4) |
C3—C4—C9 | 120.3 (4) | C15—C14—C11 | 122.4 (4) |
C4—C5—C6 | 121.0 (4) | C19—C14—C11 | 119.7 (4) |
C4—C5—H5A | 119.5 | C16—C15—C14 | 120.9 (4) |
C6—C5—H5A | 119.5 | C16—C15—H15A | 119.6 |
C7—C6—C5 | 117.9 (4) | C14—C15—H15A | 119.6 |
C7—C6—C8 | 121.8 (4) | C15—C16—C17 | 119.0 (4) |
C5—C6—C8 | 120.2 (4) | C15—C16—H16A | 120.5 |
C6—C7—C2 | 123.0 (4) | C17—C16—H16A | 120.5 |
C6—C7—H7A | 118.5 | C18—C17—C16 | 121.8 (4) |
C2—C7—H7A | 118.5 | C18—C17—Cl1 | 119.2 (4) |
C6—C8—H8A | 109.5 | C16—C17—Cl1 | 119.0 (4) |
C6—C8—H8B | 109.5 | C17—C18—C19 | 118.0 (4) |
H8A—C8—H8B | 109.5 | C17—C18—H18A | 121.0 |
C6—C8—H8C | 109.5 | C19—C18—H18A | 121.0 |
H8A—C8—H8C | 109.5 | C18—C19—C14 | 122.4 (4) |
H8B—C8—H8C | 109.5 | C18—C19—Cl2 | 117.9 (3) |
N1—C9—C4 | 124.8 (4) | C14—C19—Cl2 | 119.6 (3) |
C9—N1—N2—C10 | 0.5 (5) | C10—N3—C11—C14 | 76.7 (5) |
C7—C2—C3—C4 | 1.3 (6) | C13—N3—C11—S1 | 18.4 (5) |
C1—C2—C3—C4 | 178.9 (4) | C10—N3—C11—S1 | −162.7 (3) |
C2—C3—C4—C5 | −1.5 (6) | C12—S1—C11—N3 | −22.7 (3) |
C2—C3—C4—C9 | −179.6 (4) | C12—S1—C11—C14 | 99.6 (3) |
C3—C4—C5—C6 | 0.2 (6) | C11—S1—C12—C13 | 22.1 (4) |
C9—C4—C5—C6 | 178.4 (4) | C10—N3—C13—O | −4.5 (8) |
C4—C5—C6—C7 | 1.2 (6) | C11—N3—C13—O | 174.4 (5) |
C4—C5—C6—C8 | −176.4 (4) | C10—N3—C13—C12 | 178.8 (4) |
C5—C6—C7—C2 | −1.4 (7) | C11—N3—C13—C12 | −2.4 (6) |
C8—C6—C7—C2 | 176.2 (4) | S1—C12—C13—O | 167.6 (5) |
C3—C2—C7—C6 | 0.2 (7) | S1—C12—C13—N3 | −15.6 (6) |
C1—C2—C7—C6 | −177.4 (4) | N3—C11—C14—C15 | 11.2 (6) |
N2—N1—C9—C4 | 178.1 (4) | S1—C11—C14—C15 | −105.7 (4) |
N2—N1—C9—S2 | −0.3 (5) | N3—C11—C14—C19 | −170.7 (3) |
C5—C4—C9—N1 | −179.9 (4) | S1—C11—C14—C19 | 72.4 (4) |
C3—C4—C9—N1 | −1.8 (6) | C19—C14—C15—C16 | −1.3 (6) |
C5—C4—C9—S2 | −1.6 (5) | C11—C14—C15—C16 | 176.9 (4) |
C3—C4—C9—S2 | 176.5 (3) | C14—C15—C16—C17 | 0.3 (7) |
C10—S2—C9—N1 | 0.0 (3) | C15—C16—C17—C18 | 1.4 (7) |
C10—S2—C9—C4 | −178.5 (3) | C15—C16—C17—Cl1 | −177.7 (3) |
N1—N2—C10—N3 | 179.3 (4) | C16—C17—C18—C19 | −2.1 (6) |
N1—N2—C10—S2 | −0.5 (5) | Cl1—C17—C18—C19 | 177.1 (3) |
C13—N3—C10—N2 | 176.7 (4) | C17—C18—C19—C14 | 1.1 (6) |
C11—N3—C10—N2 | −2.2 (6) | C17—C18—C19—Cl2 | −176.9 (3) |
C13—N3—C10—S2 | −3.5 (6) | C15—C14—C19—C18 | 0.6 (6) |
C11—N3—C10—S2 | 177.7 (3) | C11—C14—C19—C18 | −177.6 (4) |
C9—S2—C10—N2 | 0.3 (3) | C15—C14—C19—Cl2 | 178.6 (3) |
C9—S2—C10—N3 | −179.6 (4) | C11—C14—C19—Cl2 | 0.4 (5) |
C13—N3—C11—C14 | −102.2 (4) |
Experimental details
Crystal data | |
Chemical formula | C19H15Cl2N3OS2 |
Mr | 436.36 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 298 |
a, b, c (Å) | 8.1760 (16), 9.1650 (18), 14.483 (3) |
α, β, γ (°) | 80.60 (3), 80.82 (3), 63.92 (3) |
V (Å3) | 956.9 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.57 |
Crystal size (mm) | 0.40 × 0.30 × 0.20 |
Data collection | |
Diffractometer | Enraf–Nonius CAD-4 |
Absorption correction | ψ scan (North et al., 1968) |
Tmin, Tmax | 0.803, 0.894 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4042, 3761, 2824 |
Rint | 0.044 |
(sin θ/λ)max (Å−1) | 0.616 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.055, 0.165, 1.04 |
No. of reflections | 3761 |
No. of parameters | 244 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.42, −0.45 |
Computer programs: CAD-4 Software (Enraf–Nonius, 1989), XCAD4 (Harms & Wocadlo, 1995), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Siemens,1996).
Acknowledgements
The authors thank Professor Hua-qin Wang of Nanjing University for carrying out the X-ray crystallographic analysis.
References
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1,3,4-Thiadiazole derivatives containing the thiazolidinone unit are of great interest because of their chemical and pharmaceutical properties. Some derivatives have fungicidal activities and exhibit certain herbicidal activities (Chen et al., 2000; Kidwai et al., 2000; Vicentini et al., 1998). Some show insecticidal activities (Arun et al., 1999; Wasfy et al., 1996). We report here the crystal structure of the titled compound, (I).
The molecular structure of (I) is shown in Fig.1. In this structure, the thiazolidinone adopts a twist conformation, the dihedral angle between the C11/S1/C12 and C11/N3/C12 is 24.4 (4)°. The thiadiazole ring (S2/C9/N1/N2/C10) is an aromatic heterocyclic ring, all atoms are in the same plane. The angle between the thiadiazole ring and the 3,5-dimethylphenyl ring is 2.7 (2)°. The other benzene ring (C14/C15/C16/C17/C18/C19) is nearly perpendicular to the thiadiazole ring, the dihedral angle is 82.8 (2)°. The molecule has a C—H···N intramolecular hydrogen bond.