organic compounds
N-(2-Thienylmethylene)-2-(2-{[2-(2-thienylmethyleneamino)phenyl]sulfanyl}ethylsulfanyl)aniline
aDepartment of Chemistry, Faculty of Science, Lorestan University, Khorramabad, Iran, and bDepartment of Chemistry, Islamic Azad University, Shahr-e-Rey Branch, Tehran, Iran
*Correspondence e-mail: alikakanejadifard@yahoo.com
The 24H20N2S4, contains one half-molecule: a crystallographic centre of inversion is located at the mid-point of the two central C atoms. The thiophene ring is oriented at a dihedral angle of 60.64 (3)° with respect to the benzene ring. In the π–π contacts between thiophene rings [centroid–centroid distance = 3.581 (1) Å] may stabilize the structure. A weak C—H⋯π interaction is also present.
of the title compound, CRelated literature
For related structures, see: Dharaa et al. (2005); Gok & Demirbas (1989); Kakanejadifard et al. (2007); Kakanejadifard & Amani (2008); Morshedi et al. (2009); Rajsekhar et al. (2002, 2004); Taylor et al. (2008). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536809024404/hk2716sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809024404/hk2716Isup2.hkl
For the preparation of the title compound, a solution of thiophencarbaldehyde (20 mmol) was added dropwise to a solution of 2-[2-(2-aminophenylthio)benzeneamine] (2.76 g, 10 mmol) in absolute ethanol (25 ml) with stirring in 10 min at room temperature. The mixture was stirred and heated to reflux for 5 h. The product was filtered and crystallized from CH3CN (yield; 45%, m.p. 398-399 K).
H atoms were positioned geometrically with C-H = 0.95 and 0.99 Å for aromatic and methylene H atoms, respectively, and constrained to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C).
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C24H20N2S4 | F(000) = 484 |
Mr = 464.66 | Dx = 1.417 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 887 reflections |
a = 11.179 (5) Å | θ = 3–30° |
b = 7.730 (4) Å | µ = 0.45 mm−1 |
c = 12.608 (6) Å | T = 100 K |
β = 91.899 (12)° | Prism, yellow |
V = 1088.9 (9) Å3 | 0.30 × 0.20 × 0.15 mm |
Z = 2 |
Bruker Kappa APEXII CCD diffractometer | 2899 independent reflections |
Radiation source: fine-focus sealed tube | 2569 reflections with I > 2/s(I) |
Graphite monochromator | Rint = 0.029 |
ϕ and ω scans | θmax = 29.0°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −15→15 |
Tmin = 0.895, Tmax = 0.930 | k = −10→10 |
12880 measured reflections | l = −17→17 |
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)] = 0.029 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.079 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0441P)2 + 0.43P] where P = (Fo2 + 2Fc2)/3 |
2899 reflections | (Δ/σ)max = 0.001 |
136 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.26 e Å−3 |
C24H20N2S4 | V = 1088.9 (9) Å3 |
Mr = 464.66 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.179 (5) Å | µ = 0.45 mm−1 |
b = 7.730 (4) Å | T = 100 K |
c = 12.608 (6) Å | 0.30 × 0.20 × 0.15 mm |
β = 91.899 (12)° |
Bruker Kappa APEXII CCD diffractometer | 2899 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 2569 reflections with I > 2/s(I) |
Tmin = 0.895, Tmax = 0.930 | Rint = 0.029 |
12880 measured reflections |
R[F2 > 2σ(F2)] = 0.029 | 0 restraints |
wR(F2) = 0.079 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.34 e Å−3 |
2899 reflections | Δρmin = −0.26 e Å−3 |
136 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 | ||
S1 | 0.63766 (3) | −0.06436 (4) | 0.88963 (2) | 0.01981 (9) | |
S2 | 0.96427 (3) | 0.15452 (4) | 0.67870 (2) | 0.01990 (9) | |
N1 | 0.79244 (9) | −0.14058 (14) | 0.72259 (8) | 0.0188 (2) | |
C1 | 0.51924 (11) | −0.09011 (16) | 0.98300 (10) | 0.0199 (2) | |
H1A | 0.4507 | −0.1525 | 0.9492 | 0.024* | |
H1B | 0.5485 | −0.1574 | 1.0454 | 0.024* | |
C2 | 0.64682 (11) | −0.27273 (16) | 0.83345 (10) | 0.0178 (2) | |
C3 | 0.58160 (11) | −0.41715 (17) | 0.86395 (10) | 0.0212 (3) | |
H3A | 0.5258 | −0.4071 | 0.9188 | 0.025* | |
C4 | 0.59782 (12) | −0.57566 (17) | 0.81445 (11) | 0.0232 (3) | |
H4A | 0.5528 | −0.6732 | 0.8357 | 0.028* | |
C5 | 0.67894 (12) | −0.59283 (18) | 0.73454 (11) | 0.0238 (3) | |
H5A | 0.6912 | −0.7024 | 0.7025 | 0.029* | |
C6 | 0.74233 (12) | −0.44926 (17) | 0.70128 (10) | 0.0216 (3) | |
H6A | 0.7970 | −0.4605 | 0.6456 | 0.026* | |
C7 | 0.72613 (10) | −0.28888 (16) | 0.74913 (9) | 0.0180 (2) | |
C8 | 0.79459 (11) | −0.09360 (17) | 0.62510 (10) | 0.0196 (2) | |
H8A | 0.7488 | −0.1565 | 0.5733 | 0.024* | |
C9 | 0.86458 (11) | 0.05200 (17) | 0.59218 (10) | 0.0188 (2) | |
C10 | 0.86686 (12) | 0.12347 (18) | 0.49235 (10) | 0.0213 (3) | |
H10A | 0.8185 | 0.0843 | 0.4338 | 0.026* | |
C11 | 0.94924 (12) | 0.26160 (18) | 0.48653 (10) | 0.0234 (3) | |
H11A | 0.9619 | 0.3261 | 0.4237 | 0.028* | |
C12 | 1.00852 (12) | 0.29220 (17) | 0.58100 (10) | 0.0223 (3) | |
H12B | 1.0675 | 0.3797 | 0.5914 | 0.027* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.01936 (16) | 0.01889 (16) | 0.02154 (16) | −0.00077 (11) | 0.00610 (11) | −0.00011 (11) |
S2 | 0.02172 (16) | 0.02322 (17) | 0.01469 (15) | −0.00207 (11) | −0.00047 (11) | −0.00144 (11) |
N1 | 0.0163 (5) | 0.0226 (5) | 0.0174 (5) | −0.0002 (4) | 0.0025 (4) | −0.0003 (4) |
C1 | 0.0180 (6) | 0.0221 (6) | 0.0199 (6) | 0.0015 (5) | 0.0049 (4) | 0.0027 (5) |
C2 | 0.0168 (5) | 0.0188 (6) | 0.0178 (5) | 0.0017 (4) | −0.0008 (4) | 0.0010 (4) |
C3 | 0.0190 (6) | 0.0226 (6) | 0.0221 (6) | −0.0004 (5) | 0.0013 (5) | 0.0045 (5) |
C4 | 0.0226 (6) | 0.0196 (6) | 0.0270 (6) | −0.0027 (5) | −0.0036 (5) | 0.0044 (5) |
C5 | 0.0239 (6) | 0.0210 (6) | 0.0261 (6) | 0.0016 (5) | −0.0053 (5) | −0.0026 (5) |
C6 | 0.0196 (6) | 0.0251 (6) | 0.0200 (6) | 0.0021 (5) | −0.0005 (5) | −0.0024 (5) |
C7 | 0.0160 (5) | 0.0210 (6) | 0.0170 (5) | −0.0001 (4) | −0.0013 (4) | 0.0014 (4) |
C8 | 0.0173 (5) | 0.0240 (6) | 0.0176 (6) | 0.0002 (5) | 0.0007 (4) | −0.0011 (5) |
C9 | 0.0173 (5) | 0.0229 (6) | 0.0163 (5) | 0.0004 (4) | 0.0001 (4) | −0.0020 (5) |
C10 | 0.0220 (6) | 0.0259 (6) | 0.0159 (6) | 0.0006 (5) | −0.0010 (4) | 0.0000 (5) |
C11 | 0.0277 (6) | 0.0230 (6) | 0.0198 (6) | 0.0008 (5) | 0.0034 (5) | 0.0037 (5) |
C12 | 0.0247 (6) | 0.0193 (6) | 0.0232 (6) | −0.0022 (5) | 0.0032 (5) | 0.0002 (5) |
S1—C2 | 1.7639 (15) | C4—H4A | 0.9500 |
S1—C1 | 1.8114 (14) | C5—C6 | 1.389 (2) |
S2—C12 | 1.7132 (15) | C5—H5A | 0.9500 |
S2—C9 | 1.7261 (14) | C6—C7 | 1.3932 (19) |
N1—C8 | 1.2827 (17) | C6—H6A | 0.9500 |
N1—C7 | 1.4114 (17) | C8—C9 | 1.4396 (18) |
C1—C1i | 1.524 (3) | C8—H8A | 0.9500 |
C1—H1A | 0.9900 | C9—C10 | 1.3757 (18) |
C1—H1B | 0.9900 | C10—C11 | 1.414 (2) |
C2—C3 | 1.3944 (18) | C10—H10A | 0.9500 |
C2—C7 | 1.4122 (17) | C11—C12 | 1.3644 (19) |
C3—C4 | 1.3897 (19) | C11—H11A | 0.9500 |
C3—H3A | 0.9500 | C12—H12B | 0.9500 |
C4—C5 | 1.384 (2) | ||
C2—S1—C1 | 102.36 (6) | C5—C6—C7 | 120.35 (12) |
C12—S2—C9 | 91.53 (7) | C5—C6—H6A | 119.8 |
C8—N1—C7 | 118.94 (11) | C7—C6—H6A | 119.8 |
C1i—C1—S1 | 107.55 (11) | C6—C7—N1 | 122.90 (11) |
C1i—C1—H1A | 110.2 | C6—C7—C2 | 119.91 (12) |
S1—C1—H1A | 110.2 | N1—C7—C2 | 117.03 (11) |
C1i—C1—H1B | 110.2 | N1—C8—C9 | 121.68 (12) |
S1—C1—H1B | 110.2 | N1—C8—H8A | 119.2 |
H1A—C1—H1B | 108.5 | C9—C8—H8A | 119.2 |
C3—C2—C7 | 118.94 (12) | C10—C9—C8 | 127.19 (12) |
C3—C2—S1 | 125.63 (10) | C10—C9—S2 | 111.26 (10) |
C7—C2—S1 | 115.42 (9) | C8—C9—S2 | 121.50 (10) |
C4—C3—C2 | 120.32 (12) | C9—C10—C11 | 112.50 (12) |
C4—C3—H3A | 119.8 | C9—C10—H10A | 123.7 |
C2—C3—H3A | 119.8 | C11—C10—H10A | 123.7 |
C5—C4—C3 | 120.66 (12) | C12—C11—C10 | 112.59 (12) |
C5—C4—H4A | 119.7 | C12—C11—H11A | 123.7 |
C3—C4—H4A | 119.7 | C10—C11—H11A | 123.7 |
C4—C5—C6 | 119.75 (13) | C11—C12—S2 | 112.12 (10) |
C4—C5—H5A | 120.1 | C11—C12—H12B | 123.9 |
C6—C5—H5A | 120.1 | S2—C12—H12B | 123.9 |
C2—S1—C1—C1i | −166.07 (12) | S1—C2—C7—C6 | 178.23 (9) |
C1—S1—C2—C3 | −4.13 (13) | C3—C2—C7—N1 | −178.52 (11) |
C1—S1—C2—C7 | 174.52 (9) | S1—C2—C7—N1 | 2.73 (14) |
C7—C2—C3—C4 | 2.25 (19) | C7—N1—C8—C9 | −177.31 (11) |
S1—C2—C3—C4 | −179.14 (10) | N1—C8—C9—C10 | −174.31 (13) |
C2—C3—C4—C5 | 0.2 (2) | N1—C8—C9—S2 | 8.43 (18) |
C3—C4—C5—C6 | −1.9 (2) | C12—S2—C9—C10 | −0.04 (10) |
C4—C5—C6—C7 | 1.1 (2) | C12—S2—C9—C8 | 177.62 (11) |
C5—C6—C7—N1 | 176.60 (12) | C8—C9—C10—C11 | −177.69 (12) |
C5—C6—C7—C2 | 1.38 (19) | S2—C9—C10—C11 | −0.20 (15) |
C8—N1—C7—C6 | 53.92 (17) | C9—C10—C11—C12 | 0.42 (17) |
C8—N1—C7—C2 | −130.73 (13) | C10—C11—C12—S2 | −0.44 (15) |
C3—C2—C7—C6 | −3.02 (18) | C9—S2—C12—C11 | 0.28 (11) |
Symmetry code: (i) −x+1, −y, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10A···Cg1ii | 0.95 | 2.80 | 3.740 (3) | 171 |
Symmetry code: (ii) x, −y−1/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C24H20N2S4 |
Mr | 464.66 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 11.179 (5), 7.730 (4), 12.608 (6) |
β (°) | 91.899 (12) |
V (Å3) | 1088.9 (9) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.45 |
Crystal size (mm) | 0.30 × 0.20 × 0.15 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.895, 0.930 |
No. of measured, independent and observed [I > 2/s(I)] reflections | 12880, 2899, 2569 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.682 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.029, 0.079, 1.00 |
No. of reflections | 2899 |
No. of parameters | 136 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.34, −0.26 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10A···Cg1i | 0.95 | 2.80 | 3.740 (3) | 171 |
Symmetry code: (i) x, −y−1/2, z−1/2. |
Acknowledgements
We are grateful to the Research Grant Council of Lorestan University for financial support.
References
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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.
There are several examples of N2S2 Schiff bases type of adducts which exist as anti configuration. For 2-[2-(2-aminophenylthio)benzeneamine] adduct see: (Gok & Demirbas, 1989; Dharaa et al., 2005; Kakanejadifard et al., 2007; Kakanejadifard & Amani, 2008). For N2S2 Schiff bases adduct see: (Rajsekhar et al., 2002; Taylor et al., 2008; Morshedi et al., 2009). For N2O2S2 Schiff bases adduct see: (Rajsekhar et al., 2004). We report herein the synthesis and crystal structure of the title compound.
The asymmetric unit of the title compound, (Fig. 1), contains one-half molecule. A crystallographic centre of inversion is located at the midpoint between the two central C atoms. The bond lengths (Allen et al., 1987) and angles are within normal ranges. Rings A (C2-C7) and B (S2/C9-C12) are, of course, planar and they are oriented at a dihedral angle of 60.64 (3)°.
In the crystal structure, the π–π contact between the thiophene rings, Cg2—Cg2i, [symmetry code: (i) -x, -y, 1 - z, where Cg2 is centroid of the ring B (S2/C9-C12)] may stabilize the structure, with centroid-centroid distance of 3.581 (1) Å. There also exits a weak C—H···π interaction (Table 1).