2-(4-Chloro­phen­yl)-5-{3,4-dibut­oxy-5-[5-(4-chloro­phen­yl)-1,3,4-oxadiazol-2-yl]thio­phen-2-yl}-1,3,4-oxadiazole

Li, H.-L.; Wang, H.-W.; Lu, R.-Z.; Wang, H.-B.

doi:10.1107/S1600536808035848

organic compounds

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 64| Part 12| December 2008| Page o2298

doi:10.1107/S1600536808035848

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2-(4-Chlorophenyl)-5-{3,4-dibutoxy-5-[5-(4-chlorophenyl)-1,3,4-oxadiazol-2-yl]thiophen-2-yl}-1,3,4-oxadiazole

Hai-Lin Li,^a Hong-Wei Wang,^b Ran-Zhe Lu ^a and Hai-Bo Wang ^a ^*

^aCollege of Science, Nanjing University of Technology, Xinmofan Road No.5 Nanjing, Nanjing 210009, People's Republic of China, and ^bNantong Entry–Exit Inspection and Quarantine Bureau, Nantong Jiangsu 226005, People's Republic of China
^*Correspondence e-mail: wanghaibo@njut.edu.cn

(Received 13 October 2008; accepted 1 November 2008; online 8 November 2008)

In the title compound, C₂₈H₂₆Cl₂N₄O₄S, the dihedral angles between the two chlorophenyl rings and the two oxadiazol rings are 10.51 (4)° and 13.55 (3)°, respectively. The thiophene ring is oriented at dihedral angles of 5.59 (4)°, 8.33 (4)° and 4.41 (4)°, 11.05 (3)°, respectively, with respect to the two oxadiazol and the two chlorophenyl rings. The intramolecular C—H⋯O hydrogen bond results in the formation of a five-membered ring. In the crystal structure, π–π contacts between the oxadiazol rings, the chlorophenyl rings and the chlorophenyl and oxadiazol rings [centroid–centroid distances = 3.428 (3) Å, 3.750 (3) Å and 3.768 (3) Å, respectively] are present.

Related literature

For general background, see: Blumstengel et al. (1999 ); Bugatti et al. (2006 ); Laurent et al. (2005 ). For bond-length data, see: Allen et al. (1987 ).

Experimental

Crystal data

C₂₈H₂₆Cl₂N₄O₄S
M_r = 585.49
Monoclinic, C 2/c
a = 19.215 (4) Å
b = 22.847 (5) Å
c = 14.933 (3) Å
β = 121.25 (3)°
V = 5605 (3) Å³
Z = 8
Mo Kα radiation
μ = 0.35 mm⁻¹
T = 294 (2) K
0.30 × 0.10 × 0.10 mm

Data collection

Enraf–Nonius CAD-4 diffractometer
Absorption correction: ψ scan (North et al., 1968 ) T_min = 0.903, T_max = 0.966
10353 measured reflections
5053 independent reflections
2050 reflections with I > 2σ(I)
R_int = 0.066
3 standard reflections frequency: 120 min intensity decay: none

Refinement

R[F² > 2σ(F²)] = 0.080
wR(F²) = 0.198
S = 1.01
5053 reflections
298 parameters
H-atom parameters constrained
Δρ_max = 0.24 e Å⁻³
Δρ_min = −0.46 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C4—H4B⋯O1	0.97	2.57	3.203 (7)	123

Data collection: CAD-4 Software (Enraf–Nonius, 1989 ); cell refinement: CAD-4 Software; 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.

Supporting information

Crystal structure: contains datablock I. DOI: 10.1107/S1600536808035848/hk2553sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536808035848/hk2553Isup2.hkl

checkCIF report

Comment top

Thiophene derivatives possess electroluminescence (Blumstengel et al., 1999; Bugatti et al., 2006) and biological (Laurent et al., 2005) properties. As part of our studies in this area, we report herein the synthesis and crystal structure of the title compound.

In the title compound (Fig. 1), the bond lengths (Allen et al., 1987) and angles are within normal ranges. Rings A (C9-C14), B (N1/N2/O3/C15/C16), C (S/C17-C20), D (N3/N4/O4/C21/C22) and E (C23-C28) are, of course, planar and the dihedral angles between them are A/B = 7.54 (3)°, A/C = 4.41 (4)°, A/D = 6.88 (4)°, A/E = 10.51 (4)°, B/C = 5.59 (4)°, B/D = 13.55 (3)°, B/E = 16.57 (3)°, C/D = 8.33 (4)°, C/E = 11.05 (3)° and D/E = 3.78 (3)°. The intramolecular C-H···O hydrogen bonds (Table 1) result in the formation of three five- and one six-membered rings F (O3/C12/C13/C15/H13A), G (O1/C6-C8/H6A), H (O4/C22/C23/C28/H28A) and I (O1/O2/C4/C18/C19/H4B). Rings F and H are planar and they are oriented with respect to the adjacent rings at dihedral angles of A/F = 4.18 (4)°, B/F = 8.02 (4)°, D/I = 3.47 (4)° and E/I = 2.05 (4)°. Ring G adopts envelope conformation with C7 atom displaced by 0.570 (3) Å from the plane of the other ring atoms, while ring I has twisted conformation.

In the crystal structure, the π—π contacts between A, D and E rings, Cg3···Cg3ⁱ, Cg4···Cg4ⁱ and Cg5···Cg3ⁱⁱ [symmetry codes: (i) -x, y, -1/2 - z; (ii) -x, -y, -z, where Cg3, Cg4 and Cg5 are the centroids of the rings D (N3/N4/O4/C21/C22), A (C9-C14) and E (C23-C28) may stabilize the structure, with centroid-centroid distances of 3.428 (3) Å, 3.750 (3) Å and 3.768 (3) Å, respectively.

Related literature top

For general background, see: Blumstengel et al. (1999); Bugatti et al. (2006); Laurent et al. (2005). For bond-length data, see: Allen et al. (1987).

Experimental top

For the preparation of the title compound, 3,4-dibutoxythiophene-2,5-dicarbo- hydrazide (10 mmol) was dissolved in pyridine (30 ml), and then 4-chlorobenzoyl chloride (22 mmol) was added dropwise. The resulting mixture was kept at 345 K for 12 h. After cooling, the mixture was poured into cold water. After filtration and dryness, the colorless solid compound was obtained. The crude compound dissolved in phosphoryl trichloride (30 ml). The mixture was refluxed for 12 h. After cooling, the mixture was poured into smash ice. Then, the title compound was obtained and purified by recrystalization from trichloro- methane (yield; 82.8%, m.p. 451 K). Crystals suitable for X-ray analysis were obtained by slow evaporation of an ethyl acetate solution.

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

Fig. 1. The molecular structure of the title molecule, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level.

2-(4-Chlorophenyl)-5-{3,4-dibutoxy-5-[5-(4-chlorophenyl)-1,3,4-oxadiazol-2- yl]thiophen-2-yl}-1,3,4-oxadiazole top

Crystal data top

C₂₈H₂₆Cl₂N₄O₄S	F(000) = 2432
M_r = 585.49	D_x = 1.388 Mg m⁻³
Monoclinic, C2/c	Melting point: 451K K
Hall symbol: -C 2yc	Mo Kα radiation, λ = 0.71073 Å
a = 19.215 (4) Å	Cell parameters from 25 reflections
b = 22.847 (5) Å	θ = 9–12°
c = 14.933 (3) Å	µ = 0.35 mm⁻¹
β = 121.25 (3)°	T = 294 K
V = 5605 (3) Å³	Block, yellow
Z = 8	0.30 × 0.10 × 0.10 mm

Data collection top

Enraf–Nonius CAD-4 diffractometer	2050 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	R_int = 0.066
Graphite monochromator	θ_max = 25.2°, θ_min = 1.5°
ω/2θ scans	h = −22→19
Absorption correction: ψ scan (North et al., 1968)	k = 0→27
T_min = 0.903, T_max = 0.966	l = 0→17
10353 measured reflections	3 standard reflections every 120 min
5053 independent reflections	intensity decay: none

Refinement top

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)] = 0.080	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.198	H-atom parameters constrained
S = 1.01	w = 1/[σ²(F_o²) + (0.060P)² + 7.P] where P = (F_o² + 2F_c²)/3
5053 reflections	(Δ/σ)_max < 0.001
298 parameters	Δρ_max = 0.24 e Å⁻³
0 restraints	Δρ_min = −0.46 e Å⁻³

Crystal data top

C₂₈H₂₆Cl₂N₄O₄S	V = 5605 (3) Å³
M_r = 585.49	Z = 8
Monoclinic, C2/c	Mo Kα radiation
a = 19.215 (4) Å	µ = 0.35 mm⁻¹
b = 22.847 (5) Å	T = 294 K
c = 14.933 (3) Å	0.30 × 0.10 × 0.10 mm
β = 121.25 (3)°

Data collection top

Enraf–Nonius CAD-4 diffractometer	2050 reflections with I > 2σ(I)
Absorption correction: ψ scan (North et al., 1968)	R_int = 0.066
T_min = 0.903, T_max = 0.966	3 standard reflections every 120 min
10353 measured reflections	intensity decay: none
5053 independent reflections

Refinement top

R[F² > 2σ(F²)] = 0.080	0 restraints
wR(F²) = 0.198	H-atom parameters constrained
S = 1.01	Δρ_max = 0.24 e Å⁻³
5053 reflections	Δρ_min = −0.46 e Å⁻³
298 parameters

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 > 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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
S	0.42931 (8)	0.23942 (6)	0.30296 (10)	0.0831 (4)
Cl1	0.55998 (13)	−0.21791 (7)	0.42942 (15)	0.1331 (6)
Cl2	0.69885 (12)	0.65697 (7)	0.60696 (15)	0.1313 (6)
O1	0.6213 (2)	0.15456 (15)	0.5028 (3)	0.089
O2	0.6482 (2)	0.28280 (14)	0.5192 (3)	0.0878 (10)
O3	0.49888 (19)	0.07239 (14)	0.3740 (2)	0.077
O4	0.5531 (2)	0.38674 (15)	0.4339 (3)	0.0912 (10)
N1	0.3730 (3)	0.0474 (2)	0.2575 (3)	0.089
N2	0.3786 (3)	0.1093 (2)	0.2660 (3)	0.0923 (12)
N3	0.4340 (3)	0.3757 (2)	0.2900 (4)	0.0953 (13)
N4	0.4475 (3)	0.4330 (2)	0.3069 (4)	0.0969 (13)
C1	0.6637 (4)	0.3351 (3)	0.8279 (5)	0.108
H1B	0.6939	0.3319	0.9028	0.161*
H1C	0.6102	0.3191	0.8006	0.161*
H1D	0.6592	0.3756	0.8083	0.161*
C2	0.7039 (4)	0.3043 (3)	0.7869 (4)	0.108
H2B	0.7086	0.2630	0.8044	0.129*
H2C	0.7577	0.3202	0.8115	0.129*
C3	0.6462 (4)	0.3145 (3)	0.6681 (4)	0.109
H3B	0.5907	0.3034	0.6451	0.131*
H3C	0.6473	0.3549	0.6490	0.131*
C4	0.6818 (3)	0.2761 (3)	0.6269 (4)	0.100
H4A	0.7398	0.2836	0.6625	0.120*
H4B	0.6743	0.2360	0.6413	0.120*
C5	0.7651 (3)	−0.0001 (3)	0.6258 (4)	0.1016 (17)
H5A	0.7620	−0.0206	0.6798	0.152*
H5B	0.8207	0.0012	0.6432	0.152*
H5C	0.7327	−0.0202	0.5603	0.152*
C6	0.7339 (4)	0.0605 (2)	0.6166 (5)	0.1031 (18)
H6A	0.6783	0.0585	0.6011	0.124*
H6B	0.7661	0.0798	0.6838	0.124*
C7	0.7355 (4)	0.0965 (3)	0.5357 (4)	0.0981 (16)
H7A	0.7052	0.0757	0.4697	0.118*
H7B	0.7916	0.0987	0.5530	0.118*
C8	0.7034 (3)	0.1572 (3)	0.5182 (5)	0.1018 (18)
H8A	0.7386	0.1815	0.5783	0.122*
H8B	0.7009	0.1738	0.4569	0.122*
C9	0.5230 (4)	−0.1491 (2)	0.3946 (5)	0.0945 (16)
C10	0.4501 (4)	−0.1366 (3)	0.3208 (5)	0.1019 (18)
H10A	0.4140	−0.1669	0.2841	0.122*
C11	0.4230 (4)	−0.0771 (3)	0.2937 (5)	0.0971 (16)
H11A	0.3714	−0.0694	0.2367	0.117*
C12	0.4728 (3)	−0.0316 (2)	0.3514 (3)	0.0728 (12)
C13	0.5496 (3)	−0.0449 (2)	0.4331 (4)	0.089
H13A	0.5834	−0.0144	0.4734	0.106*
C14	0.5787 (4)	−0.1012 (2)	0.4579 (4)	0.0952 (16)
H14A	0.6314	−0.1088	0.5125	0.114*
C15	0.4457 (3)	0.0271 (2)	0.3244 (4)	0.0823 (14)
C16	0.4529 (3)	0.1223 (2)	0.3318 (4)	0.0801 (13)
C17	0.4872 (3)	0.1802 (2)	0.3644 (3)	0.0730 (12)
C18	0.5670 (3)	0.1949 (2)	0.4454 (3)	0.0656 (11)
C19	0.5800 (3)	0.2557 (2)	0.4558 (4)	0.077
C20	0.5068 (3)	0.2866 (2)	0.3816 (4)	0.0741 (13)
C21	0.4949 (3)	0.3481 (2)	0.3638 (4)	0.0786 (13)
C22	0.5193 (3)	0.4405 (2)	0.3924 (4)	0.0817 (14)
C23	0.5637 (3)	0.4922 (2)	0.4449 (4)	0.0796 (14)
C24	0.5285 (4)	0.5466 (3)	0.4006 (5)	0.1096 (19)
H24A	0.4771	0.5499	0.3407	0.132*
C25	0.5782 (4)	0.5975 (3)	0.4552 (5)	0.1068 (19)
H25A	0.5601	0.6344	0.4262	0.128*
C26	0.6473 (4)	0.5927 (3)	0.5436 (5)	0.0986 (16)
C27	0.6769 (4)	0.5396 (3)	0.5885 (4)	0.0925 (16)
H27A	0.7251	0.5370	0.6532	0.111*
C28	0.6361 (3)	0.4912 (2)	0.5388 (4)	0.0824 (14)
H28A	0.6578	0.4551	0.5694	0.099*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
S	0.0709 (8)	0.0945 (9)	0.0751 (8)	0.0016 (7)	0.0317 (7)	0.0012 (7)
Cl1	0.1665 (17)	0.0968 (11)	0.1486 (15)	0.0058 (11)	0.0905 (14)	0.0078 (10)
Cl2	0.1615 (17)	0.1022 (12)	0.1372 (14)	−0.0175 (11)	0.0825 (13)	−0.0107 (10)
O1	0.082 (3)	0.088 (3)	0.099 (2)	0.0027 (14)	0.0451 (11)	0.0125 (12)
O2	0.082 (2)	0.086 (2)	0.087 (2)	−0.0029 (19)	0.0378 (19)	−0.0123 (18)
N1	0.082 (3)	0.088 (3)	0.092 (2)	0.011 (2)	0.036 (3)	0.013 (2)
N2	0.070 (3)	0.106 (3)	0.095 (3)	−0.014 (2)	0.037 (3)	−0.004 (2)
N3	0.069 (3)	0.091 (3)	0.106 (4)	0.008 (2)	0.032 (3)	0.015 (3)
N4	0.079 (3)	0.105 (4)	0.096 (3)	0.014 (3)	0.037 (3)	0.017 (3)
C1	0.108 (3)	0.112 (3)	0.101 (4)	0.010 (3)	0.051 (4)	0.010 (4)
C2	0.108 (3)	0.103 (3)	0.096 (3)	0.011 (4)	0.046 (4)	0.008 (3)
C3	0.109 (4)	0.102 (3)	0.099 (5)	0.012 (5)	0.047 (5)	0.006 (4)
C4	0.100 (3)	0.088 (4)	0.110 (4)	0.008 (4)	0.052 (4)	0.005 (3)
C5	0.087 (4)	0.104 (4)	0.099 (4)	0.013 (3)	0.039 (3)	0.005 (3)
C6	0.089 (4)	0.097 (4)	0.105 (4)	0.009 (3)	0.038 (3)	−0.005 (3)
C7	0.104 (4)	0.111 (5)	0.080 (4)	0.008 (4)	0.049 (3)	0.003 (3)
C8	0.059 (3)	0.126 (5)	0.120 (4)	0.016 (3)	0.046 (3)	0.021 (4)
C9	0.122 (5)	0.092 (4)	0.083 (4)	−0.006 (4)	0.063 (4)	−0.009 (3)
C10	0.103 (5)	0.099 (5)	0.106 (5)	−0.032 (4)	0.056 (4)	−0.019 (4)
C11	0.097 (4)	0.102 (4)	0.110 (4)	−0.018 (4)	0.066 (4)	−0.012 (4)
C12	0.071 (3)	0.092 (4)	0.059 (3)	−0.007 (3)	0.036 (3)	−0.006 (2)
C13	0.089 (4)	0.091 (4)	0.079 (2)	−0.016 (4)	0.036 (4)	−0.004 (3)
C14	0.100 (4)	0.090 (4)	0.082 (4)	−0.012 (3)	0.038 (3)	0.002 (3)
C15	0.081 (4)	0.089 (4)	0.087 (3)	−0.024 (3)	0.050 (3)	−0.012 (3)
O3	0.077 (3)	0.082 (3)	0.080 (3)	−0.012 (4)	0.040 (3)	−0.012 (3)
C16	0.071 (3)	0.089 (4)	0.079 (3)	−0.004 (3)	0.039 (3)	−0.010 (3)
C17	0.066 (3)	0.096 (3)	0.066 (3)	0.002 (3)	0.040 (3)	0.002 (2)
C18	0.058 (3)	0.080 (3)	0.050 (2)	0.008 (2)	0.021 (2)	−0.011 (2)
C19	0.077 (3)	0.097 (3)	0.074 (2)	−0.016 (2)	0.050 (3)	−0.012 (2)
C20	0.088 (3)	0.073 (3)	0.078 (3)	−0.013 (3)	0.056 (3)	−0.010 (2)
C21	0.087 (4)	0.090 (4)	0.067 (3)	−0.011 (3)	0.045 (3)	−0.013 (3)
O4	0.099 (3)	0.083 (2)	0.090 (2)	0.010 (2)	0.048 (2)	0.0039 (19)
C22	0.089 (4)	0.080 (3)	0.080 (3)	0.026 (3)	0.047 (3)	0.020 (3)
C23	0.082 (4)	0.089 (4)	0.079 (4)	0.020 (3)	0.050 (3)	0.008 (3)
C24	0.111 (5)	0.093 (4)	0.130 (5)	0.018 (4)	0.067 (4)	0.022 (4)
C25	0.132 (6)	0.092 (4)	0.106 (5)	0.034 (4)	0.068 (5)	0.022 (4)
C26	0.088 (4)	0.106 (5)	0.108 (5)	−0.003 (4)	0.055 (4)	0.002 (4)
C27	0.101 (4)	0.096 (4)	0.093 (4)	0.017 (4)	0.059 (3)	−0.002 (3)
C28	0.091 (4)	0.079 (3)	0.084 (4)	0.020 (3)	0.051 (3)	0.001 (3)

Geometric parameters (Å, º) top

S—C17	1.689 (5)	C7—H7B	0.9700
S—C20	1.716 (5)	C8—H8A	0.9700
Cl1—C9	1.693 (6)	C8—H8B	0.9700
Cl2—C26	1.748 (6)	C9—C10	1.287 (8)
O1—C18	1.321 (5)	C9—C14	1.478 (7)
O1—C8	1.472 (5)	C10—C11	1.437 (8)
O2—C19	1.307 (5)	C10—H10A	0.9300
O2—C4	1.397 (6)	C11—C12	1.373 (7)
N1—C15	1.310 (6)	C11—H11A	0.9300
N1—N2	1.419 (6)	C12—C13	1.375 (7)
N2—C16	1.279 (6)	C12—C15	1.419 (7)
N3—C21	1.282 (6)	C13—C14	1.375 (7)
N3—N4	1.333 (6)	C13—H13A	0.9300
N4—C22	1.318 (6)	C14—H14A	0.9300
C1—C2	1.400 (7)	C15—O3	1.369 (5)
C1—H1B	0.9600	O3—C16	1.378 (6)
C1—H1C	0.9600	C16—C17	1.445 (7)
C1—H1D	0.9600	C17—C18	1.415 (6)
C2—C3	1.546 (8)	C18—C19	1.408 (6)
C2—H2B	0.9700	C19—C20	1.445 (7)
C2—H2C	0.9700	C20—C21	1.426 (7)
C3—C4	1.432 (7)	C21—O4	1.381 (6)
C3—H3B	0.9700	O4—C22	1.377 (5)
C3—H3C	0.9700	C22—C23	1.429 (7)
C4—H4A	0.9700	C23—C28	1.370 (7)
C4—H4B	0.9700	C23—C24	1.407 (7)
C5—C6	1.486 (7)	C24—C25	1.456 (9)
C5—H5A	0.9600	C24—H24A	0.9300
C5—H5B	0.9600	C25—C26	1.304 (8)
C5—H5C	0.9600	C25—H25A	0.9300
C6—C7	1.475 (7)	C26—C27	1.360 (8)
C6—H6A	0.9700	C27—C28	1.337 (7)
C6—H6B	0.9700	C27—H27A	0.9300
C7—C8	1.484 (7)	C28—H28A	0.9300
C7—H7A	0.9700

C17—S—C20	92.2 (2)	C9—C10—H10A	119.2
C18—O1—C8	119.7 (4)	C11—C10—H10A	119.2
C19—O2—C4	118.2 (4)	C12—C11—C10	120.6 (6)
C15—N1—N2	106.5 (4)	C12—C11—H11A	119.7
C16—N2—N1	107.6 (4)	C10—C11—H11A	119.7
C21—N3—N4	108.6 (5)	C11—C12—C13	117.8 (5)
C22—N4—N3	108.2 (4)	C11—C12—C15	120.3 (5)
C2—C1—H1B	109.5	C13—C12—C15	121.8 (5)
C2—C1—H1C	109.5	C12—C13—C14	123.1 (5)
H1B—C1—H1C	109.5	C12—C13—H13A	118.5
C2—C1—H1D	109.5	C14—C13—H13A	118.5
H1B—C1—H1D	109.5	C13—C14—C9	117.5 (5)
H1C—C1—H1D	109.5	C13—C14—H14A	121.3
C1—C2—C3	101.3 (5)	C9—C14—H14A	121.3
C1—C2—H2B	111.5	N1—C15—O3	110.2 (5)
C3—C2—H2B	111.5	N1—C15—C12	129.8 (5)
C1—C2—H2C	111.5	O3—C15—C12	120.0 (5)
C3—C2—H2C	111.5	C15—O3—C16	104.8 (4)
H2B—C2—H2C	109.3	N2—C16—O3	110.8 (5)
C4—C3—C2	100.5 (5)	N2—C16—C17	127.1 (5)
C4—C3—H3B	111.7	O3—C16—C17	122.1 (4)
C2—C3—H3B	111.7	C18—C17—C16	127.4 (4)
C4—C3—H3C	111.7	C18—C17—S	113.0 (4)
C2—C3—H3C	111.7	C16—C17—S	119.6 (4)
H3B—C3—H3C	109.4	O1—C18—C19	125.6 (4)
O2—C4—C3	113.0 (5)	O1—C18—C17	122.1 (4)
O2—C4—H4A	109.0	C19—C18—C17	112.4 (4)
C3—C4—H4A	109.0	O2—C19—C18	127.0 (4)
O2—C4—H4B	109.0	O2—C19—C20	122.4 (4)
C3—C4—H4B	109.0	C18—C19—C20	110.5 (4)
H4A—C4—H4B	107.8	C21—C20—C19	128.4 (5)
C6—C5—H5A	109.5	C21—C20—S	119.6 (4)
C6—C5—H5B	109.5	C19—C20—S	111.8 (4)
H5A—C5—H5B	109.5	N3—C21—O4	110.8 (5)
C6—C5—H5C	109.5	N3—C21—C20	129.1 (5)
H5A—C5—H5C	109.5	O4—C21—C20	120.0 (5)
H5B—C5—H5C	109.5	C22—O4—C21	102.8 (4)
C7—C6—C5	114.6 (5)	N4—C22—O4	109.4 (5)
C7—C6—H6A	108.6	N4—C22—C23	131.7 (5)
C5—C6—H6A	108.6	O4—C22—C23	118.8 (5)
C7—C6—H6B	108.6	C28—C23—C24	118.7 (5)
C5—C6—H6B	108.6	C28—C23—C22	123.2 (5)
H6A—C6—H6B	107.6	C24—C23—C22	117.9 (5)
C6—C7—C8	118.8 (5)	C23—C24—C25	115.2 (6)
C6—C7—H7A	107.6	C23—C24—H24A	122.4
C8—C7—H7A	107.6	C25—C24—H24A	122.4
C6—C7—H7B	107.6	C26—C25—C24	121.9 (6)
C8—C7—H7B	107.6	C26—C25—H25A	119.0
H7A—C7—H7B	107.0	C24—C25—H25A	119.0
O1—C8—C7	107.7 (5)	C25—C26—C27	121.3 (6)
O1—C8—H8A	110.2	C25—C26—Cl2	118.1 (5)
C7—C8—H8A	110.2	C27—C26—Cl2	120.5 (5)
O1—C8—H8B	110.2	C28—C27—C26	119.3 (6)
C7—C8—H8B	110.2	C28—C27—H27A	120.4
H8A—C8—H8B	108.5	C26—C27—H27A	120.4
C10—C9—C14	119.3 (6)	C27—C28—C23	123.2 (5)
C10—C9—Cl1	124.4 (5)	C27—C28—H28A	118.4
C14—C9—Cl1	116.3 (5)	C23—C28—H28A	118.4
C9—C10—C11	121.6 (6)

C15—N1—N2—C16	3.0 (5)	C16—C17—C18—C19	179.8 (4)
C21—N3—N4—C22	1.1 (6)	S—C17—C18—C19	−0.4 (5)
C1—C2—C3—C4	−172.2 (5)	C4—O2—C19—C18	−63.3 (6)
C19—O2—C4—C3	−82.5 (6)	C4—O2—C19—C20	119.5 (5)
C2—C3—C4—O2	−171.2 (5)	O1—C18—C19—O2	3.8 (8)
C5—C6—C7—C8	178.2 (5)	C17—C18—C19—O2	−176.0 (4)
C18—O1—C8—C7	−152.1 (4)	O1—C18—C19—C20	−178.7 (4)
C6—C7—C8—O1	−51.8 (7)	C17—C18—C19—C20	1.5 (5)
C14—C9—C10—C11	4.3 (8)	O2—C19—C20—C21	0.1 (8)
Cl1—C9—C10—C11	−178.7 (4)	C18—C19—C20—C21	−177.5 (4)
C9—C10—C11—C12	−4.8 (9)	O2—C19—C20—S	175.7 (3)
C10—C11—C12—C13	1.9 (7)	C18—C19—C20—S	−1.9 (5)
C10—C11—C12—C15	−179.9 (5)	C17—S—C20—C21	177.5 (4)
C11—C12—C13—C14	1.2 (7)	C17—S—C20—C19	1.4 (3)
C15—C12—C13—C14	−176.9 (5)	N4—N3—C21—O4	−0.6 (6)
C12—C13—C14—C9	−1.7 (8)	N4—N3—C21—C20	177.3 (5)
C10—C9—C14—C13	−1.1 (8)	C19—C20—C21—N3	170.1 (5)
Cl1—C9—C14—C13	−178.4 (4)	S—C20—C21—N3	−5.2 (7)
N2—N1—C15—O3	−1.7 (5)	C19—C20—C21—O4	−12.3 (7)
N2—N1—C15—C12	176.4 (5)	S—C20—C21—O4	172.4 (3)
C11—C12—C15—N1	10.1 (8)	N3—C21—O4—C22	−0.2 (5)
C13—C12—C15—N1	−171.9 (5)	C20—C21—O4—C22	−178.2 (4)
C11—C12—C15—O3	−172.0 (4)	N3—N4—C22—O4	−1.2 (6)
C13—C12—C15—O3	6.0 (7)	N3—N4—C22—C23	179.2 (5)
N1—C15—O3—C16	−0.1 (5)	C21—O4—C22—N4	0.9 (5)
C12—C15—O3—C16	−178.4 (4)	C21—O4—C22—C23	−179.5 (4)
N1—N2—C16—O3	−3.2 (5)	N4—C22—C23—C28	174.8 (5)
N1—N2—C16—C17	179.4 (4)	O4—C22—C23—C28	−4.7 (7)
C15—O3—C16—N2	2.2 (5)	N4—C22—C23—C24	−1.1 (8)
C15—O3—C16—C17	179.7 (4)	O4—C22—C23—C24	179.4 (4)
N2—C16—C17—C18	172.2 (5)	C28—C23—C24—C25	6.4 (7)
O3—C16—C17—C18	−5.0 (7)	C22—C23—C24—C25	−177.5 (5)
N2—C16—C17—S	−7.5 (7)	C23—C24—C25—C26	−5.5 (9)
O3—C16—C17—S	175.3 (3)	C24—C25—C26—C27	0.9 (9)
C20—S—C17—C18	−0.6 (3)	C24—C25—C26—Cl2	−175.8 (5)
C20—S—C17—C16	179.2 (4)	C25—C26—C27—C28	3.0 (9)
C8—O1—C18—C19	−49.3 (6)	Cl2—C26—C27—C28	179.6 (4)
C8—O1—C18—C17	130.5 (5)	C26—C27—C28—C23	−1.9 (8)
C16—C17—C18—O1	0.0 (7)	C24—C23—C28—C27	−3.1 (8)
S—C17—C18—O1	179.7 (3)	C22—C23—C28—C27	−179.0 (5)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C4—H4B···O1	0.97	2.57	3.203 (7)	123

Experimental details

Crystal data
Chemical formula	C₂₈H₂₆Cl₂N₄O₄S
M_r	585.49
Crystal system, space group	Monoclinic, C2/c
Temperature (K)	294
a, b, c (Å)	19.215 (4), 22.847 (5), 14.933 (3)
β (°)	121.25 (3)
V (Å³)	5605 (3)
Z	8
Radiation type	Mo Kα
µ (mm⁻¹)	0.35
Crystal size (mm)	0.30 × 0.10 × 0.10

Data collection
Diffractometer	Enraf–Nonius CAD-4 diffractometer
Absorption correction	ψ scan (North et al., 1968)
T_min, T_max	0.903, 0.966
No. of measured, independent and observed [I > 2σ(I)] reflections	10353, 5053, 2050
R_int	0.066
(sin θ/λ)_max (Å⁻¹)	0.599

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.080, 0.198, 1.01
No. of reflections	5053
No. of parameters	298
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.24, −0.46

Computer programs: CAD-4 Software (Enraf–Nonius, 1989), XCAD4 (Harms & Wocadlo, 1995), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C4—H4B···O1	0.97	2.57	3.203 (7)	123.00

References

Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CrossRef Web of Science Google Scholar
Blumstengel, S., Sokolik, I., Dorsinville, R., Voloschenko, D., He, M., Lavrentovich, O. & Chien, L. C. (1999). Synth. Met. 99, 85–90. Web of Science CrossRef CAS Google Scholar
Bugatti, V., Concilio, S., Iannelli, P., Piotto, S. P., Bellone, S., Ferrara, M., Neitzert, H. C., Rubino, A., Della Sala, D. & Vacca, P. (2006). Synth. Met. 156, 13–20. Web of Science CrossRef CAS Google Scholar
Enraf–Nonius (1989). CAD-4 Software. Enraf–Nonius, Delft, The Netherlands. Google Scholar
Harms, K. & Wocadlo, S. (1995). XCAD4. University of Marburg, Germany. Google Scholar
Laurent, B., Evelyne, M. & Adrien, N. (2005). Eur. J. Med. Chem. 40, 757–763. Web of Science PubMed Google Scholar
North, A. C. T., Phillips, D. C. & Mathews, F. S. (1968). Acta Cryst. A24, 351–359. CrossRef IUCr Journals Web of Science Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar

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Volume 64| Part 12| December 2008| Page o2298

doi:10.1107/S1600536808035848

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organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

2-(4-Chloro­phen­yl)-5-{3,4-dibut­­oxy-5-[5-(4-chloro­phen­yl)-1,3,4-oxa­diazol-2-yl]thio­phen-2-yl}-1,3,4-oxa­diazole

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Experimental

Crystal data

Data collection

Refinement

Supporting information

References

organic compounds

2-(4-Chlorophenyl)-5-{3,4-dibutoxy-5-[5-(4-chlorophenyl)-1,3,4-oxadiazol-2-yl]thiophen-2-yl}-1,3,4-oxadiazole