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Acta Cryst. (2008). E64, o795    [ doi:10.1107/S1600536808008465 ]

2-(2,4-Dichlorophenyl)-3-[5-(4-methoxyphenyl)-1,3,4-thiadiazol-2-yl]-1,3-thiazolidin-4-one

R. Wan, L.-H. Yin, F. Han, B. Wang and J.-T. Wang

Abstract top

In the molecule of the title compound, C18H13Cl2N3O2S2, the thiazolidinone ring has an envelope conformation with the S atom displaced by 0.394 (3) Å from the plane of the other ring atoms. The thiadiazole ring is oriented at a dihedral angle of 7.40 (4)° with respect to the 4-methoxyphenyl ring. Intramolecular C-H...S, C-H...N and C-H...Cl hydrogen bonds result in the formation of two planar and two non-planar five-membered rings. The planar five-membered rings are oriented at a dihedral angle of 6.23 (3)°. The 2,4-dichlorophenyl ring is oriented at dihedral angles of 84.21 (4) and 83.55 (3)° with respect to the thiadiazole and 4-methoxyphenyl rings, respectively. In the crystal structure, intermolecular C-H...O hydrogen bonds link the molecules into centrosymmetric dimers.

Comment top

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). On the other hand, some of them show insecticidal activities (Arun et al., 1999; Wasfy et al., 1996). We report herein the crystal structure of the title compound, (I).

In the molecule of (I), (Fig. 1), rings A (C2-C7), B (S1/N1/N2/C8/C9) and D (C13-C18) are, of course, planar. The dihedral angles between them are A/B = 7.40 (4)°, A/D = 83.55 (3)° and B/D = 84.21 (4)°. So, rings A and B are nearly coplanar. Ring C (S2/N3/C10-C12) has envelope conformation with atom S2 displaced by 0.394 (3) Å from the plane of the other ring atoms. The intramolecular C-H···S, C-H···N and C-H···Cl hydrogen bonds (Table 1) result in the formation of two planar and two non-planar five-membered rings E (S1/C4/H4A/C5/C8), F (N1/C5/C6/H6A/C8) and G (N3/C12-C14/H14A), H (Cl2/C12/H12A/C13/C18). The dihedral angle between the planar rings E and F is E/F = 6.23 (3)°, and they are oriented with respect to the adjacent rings at dihedral angles of A/E = 3.26 (4)°, A/F = 4.55 (3)°, B/E = 5.03 (4)° and B/F = 7.27 (4)°. So, they are also nearly coplanar.

In the crystal structure, intermolecular C-H···O hydrogen bonds (Table 1) link the molecules into centrosymmetric dimers (Fig. 2), in which they may be effective in the stabilization of the structure.

Related literature top

For general background, see: Chen et al. (2000); Kidwai et al. (2000); Vicentini et al. (1998); Arun et al. (1999); Wasfy et al. (1996).

Experimental top

N-(2,4-dichlorobenzylidene)-5-(4-methoxyphenyl)-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. 507-509 K). Crystals of (I) suitable for X-ray analysis were obtained by slow evaporation of an acetone solution.

Refinement top

H atoms were positioned geometrically, with C-H = 0.93, 0.98, 0.97 and 0.96 Å for aromatic, methine, methylene and methyl H, respectively, and constrained to ride on their parent atoms with Uiso(H) = xUeq(C), where x = 1.5 for methyl H and x = 1.2 for all other H atoms.

Computing details top

Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell refinement: CAD-4 Software (Enraf–Nonius, 1989); data reduction: XCAD4 (Harms & Wocadlo, 1995); 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).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title molecule, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. Hydrogen bonds are shown as dashed lines
[Figure 2] Fig. 2. A partial packing diagram of (I). Hydrogen bonds are shown as dashed lines.
2-(2,4-Dichlorophenyl)-3-[5-(4-methoxyphenyl)-1,3,4-thiadiazol-2-yl]-1,3- thiazolidin-4-one top
Crystal data top
C18H13Cl2N3O2S2Z = 2
Mr = 438.33F000 = 448
Triclinic, P1Dx = 1.578 Mg m−3
Hall symbol: -P 1Melting point = 507–509 K
a = 7.1310 (14) ÅMo Kα radiation
λ = 0.71073 Å
b = 8.1540 (16) ÅCell parameters from 25 reflections
c = 16.671 (3) Åθ = 9–12º
α = 93.19 (3)ºµ = 0.60 mm−1
β = 96.43 (3)ºT = 298 (2) K
γ = 105.89 (3)ºBlock, colorless
V = 922.7 (3) Å30.30 × 0.10 × 0.10 mm
Data collection top
Enraf–Nonius CAD-4
diffractometer		Rint = 0.084
Radiation source: fine-focus sealed tubeθmax = 25.2º
Monochromator: graphiteθmin = 1.2º
T = 298(2) Kh = 0→8
ω/2θ scansk = −9→9
Absorption correction: ψ scan
(North et al., 1968)		l = −19→19
Tmin = 0.841, Tmax = 0.9433 standard reflections
3606 measured reflections every 200 reflections
3315 independent reflections intensity decay: none
2228 reflections with I > 2σ(I)
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.067H-atom parameters constrained
wR(F2) = 0.211  w = 1/[σ2(Fo2) + (0.1P)2 + 2P]
where P = (Fo2 + 2Fc2)/3
S = 1.02(Δ/σ)max < 0.001
3315 reflectionsΔρmax = 0.47 e Å−3
244 parametersΔρmin = −0.61 e Å−3
Primary atom site location: structure-invariant direct methodsExtinction correction: none
Crystal data top
C18H13Cl2N3O2S2γ = 105.89 (3)º
Mr = 438.33V = 922.7 (3) Å3
Triclinic, P1Z = 2
a = 7.1310 (14) ÅMo Kα
b = 8.1540 (16) ŵ = 0.60 mm−1
c = 16.671 (3) ÅT = 298 (2) K
α = 93.19 (3)º0.30 × 0.10 × 0.10 mm
β = 96.43 (3)º
Data collection top
Enraf–Nonius CAD-4
diffractometer		2228 reflections with I > 2σ(I)
Absorption correction: ψ scan
(North et al., 1968)		Rint = 0.084
Tmin = 0.841, Tmax = 0.9433 standard reflections
3606 measured reflections every 200 reflections
3315 independent reflections intensity decay: none
Refinement top
R[F2 > 2σ(F2)] = 0.067244 parameters
wR(F2) = 0.211H-atom parameters constrained
S = 1.02Δρmax = 0.47 e Å−3
3315 reflectionsΔρmin = −0.61 e Å−3
Special details top

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 > 2sigma(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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Cl11.3375 (3)0.6645 (2)0.50289 (13)0.0801 (6)
Cl21.1228 (2)1.20318 (19)0.40205 (10)0.0606 (5)
S10.78625 (18)0.7174 (2)0.06058 (9)0.0492 (4)
S20.5812 (2)0.9562 (2)0.33166 (11)0.0659 (5)
O11.3277 (6)0.6538 (6)−0.2389 (2)0.0616 (11)
O20.4564 (5)0.6490 (6)0.1380 (3)0.0653 (12)
N11.1375 (6)0.9039 (7)0.1050 (3)0.0535 (13)
N21.0345 (6)0.9262 (7)0.1690 (3)0.0557 (13)
N30.7229 (6)0.8433 (6)0.2094 (3)0.0488 (12)
C11.5346 (9)0.7003 (9)−0.2423 (4)0.0677 (18)
H1B1.55860.6672−0.29550.102*
H1C1.59620.6431−0.20300.102*
H1D1.58800.8220−0.23060.102*
C21.2658 (8)0.6915 (7)−0.1674 (3)0.0481 (13)
C31.0653 (8)0.6308 (9)−0.1639 (4)0.0606 (17)
H3A0.98260.5675−0.20880.073*
C40.9884 (8)0.6632 (8)−0.0956 (4)0.0556 (16)
H4A0.85380.6203−0.09440.067*
C51.1052 (7)0.7578 (7)−0.0282 (3)0.0444 (13)
C61.3061 (8)0.8127 (8)−0.0323 (4)0.0561 (16)
H6A1.39000.87210.01310.067*
C71.3842 (8)0.7822 (8)−0.1009 (4)0.0556 (16)
H7A1.51890.8237−0.10210.067*
C81.0288 (7)0.8015 (7)0.0450 (3)0.0451 (13)
C90.8518 (7)0.8390 (7)0.1524 (3)0.0457 (13)
C100.5300 (7)0.7452 (8)0.1973 (4)0.0491 (14)
C110.4280 (9)0.7736 (9)0.2684 (4)0.0670 (18)
H11A0.40380.67340.29870.080*
H11B0.30250.79280.24990.080*
C120.7992 (7)0.9486 (7)0.2846 (3)0.0463 (13)
H12A0.86931.06430.27310.056*
C130.9363 (7)0.8774 (7)0.3396 (3)0.0414 (12)
C140.9118 (8)0.7054 (7)0.3390 (4)0.0501 (14)
H14A0.80990.63220.30330.060*
C151.0296 (8)0.6354 (7)0.3883 (4)0.0518 (14)
H15A1.00950.51750.38650.062*
C161.1798 (8)0.7468 (8)0.4411 (3)0.0473 (13)
C171.2064 (7)0.9194 (7)0.4448 (3)0.0464 (13)
H17A1.30640.99270.48130.056*
C181.0853 (7)0.9832 (7)0.3946 (3)0.0425 (12)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Cl10.0617 (10)0.0839 (13)0.0961 (14)0.0270 (9)−0.0084 (9)0.0253 (10)
Cl20.0494 (8)0.0463 (8)0.0828 (11)0.0091 (6)0.0096 (7)−0.0025 (7)
S10.0242 (6)0.0653 (10)0.0511 (9)0.0018 (6)0.0043 (6)0.0040 (7)
S20.0417 (8)0.0898 (13)0.0728 (11)0.0289 (8)0.0138 (8)−0.0028 (9)
O10.044 (2)0.072 (3)0.058 (3)−0.001 (2)0.0138 (19)−0.011 (2)
O20.028 (2)0.088 (3)0.068 (3)−0.001 (2)0.0030 (19)−0.002 (3)
N10.028 (2)0.076 (3)0.051 (3)0.004 (2)0.011 (2)−0.005 (2)
N20.030 (2)0.075 (3)0.054 (3)0.002 (2)0.008 (2)−0.003 (3)
N30.026 (2)0.072 (3)0.049 (3)0.012 (2)0.012 (2)0.007 (2)
C10.045 (3)0.090 (5)0.071 (4)0.018 (3)0.026 (3)0.002 (4)
C20.038 (3)0.049 (3)0.053 (3)0.004 (2)0.009 (3)0.006 (3)
C30.033 (3)0.084 (5)0.053 (4)0.004 (3)0.000 (3)−0.010 (3)
C40.025 (3)0.076 (4)0.057 (4)0.003 (3)−0.001 (2)−0.002 (3)
C50.029 (3)0.048 (3)0.052 (3)0.003 (2)0.004 (2)0.005 (3)
C60.027 (3)0.076 (4)0.050 (3)−0.005 (3)0.001 (2)−0.009 (3)
C70.029 (3)0.075 (4)0.055 (4)0.001 (3)0.009 (3)0.001 (3)
C80.025 (2)0.052 (3)0.056 (3)0.004 (2)0.007 (2)0.011 (3)
C90.030 (3)0.056 (3)0.052 (3)0.012 (2)0.007 (2)0.011 (3)
C100.025 (3)0.061 (4)0.062 (4)0.010 (2)0.008 (3)0.012 (3)
C110.039 (3)0.092 (5)0.072 (4)0.018 (3)0.020 (3)0.008 (4)
C120.034 (3)0.054 (3)0.054 (3)0.015 (2)0.010 (2)0.006 (3)
C130.028 (2)0.048 (3)0.049 (3)0.011 (2)0.011 (2)0.000 (2)
C140.037 (3)0.052 (3)0.058 (4)0.009 (3)0.005 (3)−0.003 (3)
C150.041 (3)0.043 (3)0.071 (4)0.011 (3)0.014 (3)0.004 (3)
C160.035 (3)0.058 (4)0.053 (3)0.016 (3)0.010 (2)0.011 (3)
C170.028 (3)0.057 (4)0.050 (3)0.006 (2)0.006 (2)0.000 (3)
C180.034 (3)0.042 (3)0.054 (3)0.010 (2)0.019 (2)0.003 (2)
Geometric parameters (Å, °) top
S1—C91.721 (6)C4—C51.375 (8)
S1—C81.732 (5)C4—H4A0.9300
Cl1—C161.734 (6)C5—C61.390 (7)
O1—C21.366 (7)C5—C81.456 (8)
O1—C11.427 (7)C6—C71.366 (8)
N1—C81.295 (7)C6—H6A0.9300
N1—N21.393 (6)C7—H7A0.9300
C1—H1B0.9600C10—C111.498 (8)
C1—H1C0.9600C11—H11A0.9700
C1—H1D0.9600C11—H11B0.9700
Cl2—C181.735 (5)C12—C131.517 (7)
S2—C111.788 (7)C12—H12A0.9800
S2—C121.832 (5)C13—C141.364 (8)
O2—C101.200 (7)C13—C181.381 (7)
C2—C71.358 (8)C14—C151.367 (8)
C2—C31.388 (7)C14—H14A0.9300
N2—C91.292 (7)C15—C161.383 (8)
N3—C101.375 (7)C15—H15A0.9300
N3—C91.399 (7)C16—C171.365 (8)
N3—C121.441 (7)C17—C181.360 (8)
C3—C41.362 (8)C17—H17A0.9300
C3—H3A0.9300
C9—S1—C886.0 (3)N2—C9—S1116.2 (4)
C2—O1—C1117.6 (5)N3—C9—S1124.3 (4)
C8—N1—N2113.1 (4)O2—C10—N3124.0 (5)
O1—C1—H1B109.5O2—C10—C11125.4 (5)
O1—C1—H1C109.5N3—C10—C11110.6 (5)
H1B—C1—H1C109.5C10—C11—S2108.7 (4)
O1—C1—H1D109.5C10—C11—H11A110.0
H1B—C1—H1D109.5S2—C11—H11A110.0
H1C—C1—H1D109.5C10—C11—H11B110.0
C11—S2—C1292.5 (3)S2—C11—H11B110.0
C7—C2—O1125.2 (5)H11A—C11—H11B108.3
C7—C2—C3118.7 (5)N3—C12—C13112.7 (4)
O1—C2—C3116.1 (5)N3—C12—S2104.8 (3)
C9—N2—N1110.6 (5)C13—C12—S2111.2 (4)
C10—N3—C9122.2 (5)N3—C12—H12A109.3
C10—N3—C12119.5 (4)C13—C12—H12A109.3
C9—N3—C12118.3 (4)S2—C12—H12A109.3
C4—C3—C2120.7 (5)C14—C13—C18117.3 (5)
C4—C3—H3A119.7C14—C13—C12121.2 (5)
C2—C3—H3A119.7C18—C13—C12121.5 (5)
C3—C4—C5121.5 (5)C13—C14—C15123.3 (5)
C3—C4—H4A119.2C13—C14—H14A118.4
C5—C4—H4A119.2C15—C14—H14A118.4
C4—C5—C6116.7 (5)C14—C15—C16117.3 (5)
C4—C5—C8123.5 (5)C14—C15—H15A121.4
C6—C5—C8119.8 (5)C16—C15—H15A121.4
C7—C6—C5122.1 (5)C17—C16—C15121.2 (5)
C7—C6—H6A119.0C17—C16—Cl1119.7 (4)
C5—C6—H6A119.0C15—C16—Cl1119.0 (5)
C2—C7—C6120.2 (5)C18—C17—C16119.4 (5)
C2—C7—H7A119.9C18—C17—H17A120.3
C6—C7—H7A119.9C16—C17—H17A120.3
N1—C8—C5122.9 (4)C17—C18—C13121.5 (5)
N1—C8—S1114.1 (4)C17—C18—Cl2117.8 (4)
C5—C8—S1123.0 (4)C13—C18—Cl2120.6 (4)
N2—C9—N3119.5 (5)
C1—O1—C2—C75.7 (9)C12—N3—C10—O2−177.0 (6)
C1—O1—C2—C3−174.3 (6)C9—N3—C10—C11179.2 (5)
C8—N1—N2—C9−0.6 (7)C12—N3—C10—C112.1 (7)
C7—C2—C3—C40.7 (10)O2—C10—C11—S2−169.0 (5)
O1—C2—C3—C4−179.3 (6)N3—C10—C11—S212.0 (7)
C2—C3—C4—C50.6 (10)C12—S2—C11—C10−17.2 (5)
C3—C4—C5—C6−2.5 (9)C10—N3—C12—C13106.6 (5)
C3—C4—C5—C8177.4 (6)C9—N3—C12—C13−70.6 (6)
C4—C5—C6—C73.2 (10)C10—N3—C12—S2−14.5 (6)
C8—C5—C6—C7−176.8 (6)C9—N3—C12—S2168.3 (4)
O1—C2—C7—C6179.9 (6)C11—S2—C12—N317.6 (4)
C3—C2—C7—C6−0.1 (10)C11—S2—C12—C13−104.5 (4)
C5—C6—C7—C2−1.9 (10)N3—C12—C13—C14−31.0 (7)
N2—N1—C8—C5−179.4 (5)S2—C12—C13—C1486.3 (6)
N2—N1—C8—S1−0.9 (7)N3—C12—C13—C18151.9 (5)
C4—C5—C8—N1−173.3 (6)S2—C12—C13—C18−90.8 (5)
C6—C5—C8—N16.6 (9)C18—C13—C14—C15−1.7 (8)
C4—C5—C8—S18.3 (8)C12—C13—C14—C15−178.9 (5)
C6—C5—C8—S1−171.8 (5)C13—C14—C15—C160.1 (9)
C9—S1—C8—N11.5 (5)C14—C15—C16—C171.4 (8)
C9—S1—C8—C5−179.9 (5)C14—C15—C16—Cl1−178.2 (4)
N1—N2—C9—N3179.6 (5)C15—C16—C17—C18−1.3 (8)
N1—N2—C9—S11.8 (7)Cl1—C16—C17—C18178.3 (4)
C10—N3—C9—N2−175.9 (5)C16—C17—C18—C13−0.3 (8)
C12—N3—C9—N21.1 (8)C16—C17—C18—Cl2179.4 (4)
C10—N3—C9—S11.7 (8)C14—C13—C18—C171.7 (8)
C12—N3—C9—S1178.7 (4)C12—C13—C18—C17179.0 (5)
C8—S1—C9—N2−1.9 (5)C14—C13—C18—Cl2−178.0 (4)
C8—S1—C9—N3−179.6 (5)C12—C13—C18—Cl2−0.7 (7)
C9—N3—C10—O20.1 (9)
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
C4—H4A···S10.932.793.180 (7)106
C6—H6A···N10.932.552.856 (8)100
C12—H12A···Cl20.982.633.063 (5)107
C14—H14A···N30.932.542.863 (8)101
C14—H14A···O1i0.932.413.219 (7)146
Symmetry codes: (i) −x+2, −y+1, −z.
Table 1
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
C4—H4A···S10.932.793.180 (7)106
C6—H6A···N10.932.552.856 (8)100
C12—H12A···Cl20.982.633.063 (5)107
C14—H14A···N30.932.542.863 (8)101
C14—H14A···O1i0.932.413.219 (7)146
Symmetry codes: (i) −x+2, −y+1, −z.
Acknowledgements top

The authors thank Professor Hua-Qin Wang of Nanjing University for carrying out the X-ray crystallographic analysis.

references
References top

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