organic compounds
(E)-Ethyl 2-anilino-5-[3-(dimethylamino)acryloyl]-4-phenylthiophene-3-carboxylate
aDepartment of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia, bDepartment of Chemistry, Faculty of Science, Alexandria University, PO Box 426, Ibrahimia, 21321 Alexandria, Egypt, and cH.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
*Correspondence e-mail: yahia@ksu.edu.sa, dr.sammer.yousuf@gmail.com
In the title compound, C24H24N2O3S, the phenyl rings form dihedral angles of 55.65 (11) and 79.60 (11)° with the plane of the thiophene ring. The molecular conformation is stabilized by an intramolecular N—H⋯O hydrogen bond, generating an S(6) ring motif. In the crystal, centrosymmetrically related molecules are linked into dimers by two pairs of C—H⋯O interactions.
Related literature
For background to biological activity of thiophene derivatives see: Mishra et al. (2011). For the synthesis of different thiophene derivatives, see: Mabkhot et al. (2011); Mabkhot, Barakat & Alshahrani (2012); Mabkhot, Barakat, Al-Majid, Alamary & Al-Nahary (2012); Mabkhot, Barakat, Al-Majid & Alshahrani (2012). For related structures, see: Cao et al. (2003).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); 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, PARST (Nardelli, 1995) and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536813003231/rz5041sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813003231/rz5041Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813003231/rz5041Isup3.cml
The title compound was synthesized by following the same procedure as described by Mabkhot et al., 2011). The compound was recrystallized from a 95% ethanol solution to obtain dark yellow crystals (m. p. 440 K) found to be suitable for single-crystal X-ray data collection. All chemicals were purchased from Sigma- Aldrich.
H atoms on methyl, methylene, methine and nitrogen atoms were positioned geometrically with C—H = 0.93–0.97 Å, N—H = 0.86 Å, and constrained to ride on their parent atoms with Uiso(H)= 1.2Ueq (CH2, CH, NH) or 1.5Ueq(CH3).
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); 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), PARST (Nardelli, 1995) and PLATON (Spek, 2009).C24H24N2O3S | Z = 2 |
Mr = 420.51 | F(000) = 444 |
Triclinic, P1 | Dx = 1.255 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.5776 (9) Å | Cell parameters from 4320 reflections |
b = 10.7119 (14) Å | θ = 1.3–25.5° |
c = 16.516 (2) Å | µ = 0.17 mm−1 |
α = 78.459 (3)° | T = 273 K |
β = 79.743 (3)° | Block, yellow |
γ = 80.765 (3)° | 0.28 × 0.27 × 0.18 mm |
V = 1112.5 (3) Å3 |
Bruker SMART APEX CCD area-detector diffractometer | 4123 independent reflections |
Radiation source: fine-focus sealed tube | 3373 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.021 |
ω scan | θmax = 25.5°, θmin = 1.3° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −7→7 |
Tmin = 0.953, Tmax = 0.970 | k = −12→12 |
12618 measured reflections | l = −19→19 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.047 | H-atom parameters constrained |
wR(F2) = 0.142 | w = 1/[σ2(Fo2) + (0.0761P)2 + 0.2541P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max < 0.001 |
4123 reflections | Δρmax = 0.27 e Å−3 |
272 parameters | Δρmin = −0.20 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.004 (2) |
C24H24N2O3S | γ = 80.765 (3)° |
Mr = 420.51 | V = 1112.5 (3) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.5776 (9) Å | Mo Kα radiation |
b = 10.7119 (14) Å | µ = 0.17 mm−1 |
c = 16.516 (2) Å | T = 273 K |
α = 78.459 (3)° | 0.28 × 0.27 × 0.18 mm |
β = 79.743 (3)° |
Bruker SMART APEX CCD area-detector diffractometer | 4123 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 3373 reflections with I > 2σ(I) |
Tmin = 0.953, Tmax = 0.970 | Rint = 0.021 |
12618 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.142 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.27 e Å−3 |
4123 reflections | Δρmin = −0.20 e Å−3 |
272 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 | 0.88423 (8) | 0.46635 (5) | 0.24436 (3) | 0.0586 (2) | |
O1 | 0.9061 (3) | 0.04813 (14) | 0.16466 (10) | 0.0714 (4) | |
O2 | 1.1246 (3) | 0.16911 (16) | 0.07700 (11) | 0.0837 (5) | |
O3 | 0.5995 (3) | 0.49861 (18) | 0.38688 (12) | 0.0932 (6) | |
N1 | 1.1535 (3) | 0.40198 (17) | 0.11137 (11) | 0.0613 (5) | |
H1A | 1.1971 | 0.3505 | 0.0763 | 0.074* | |
N2 | 0.0937 (3) | 0.31677 (18) | 0.51004 (11) | 0.0648 (5) | |
C1 | 1.2694 (3) | 0.5907 (2) | 0.01997 (14) | 0.0666 (6) | |
H1B | 1.2136 | 0.5698 | −0.0228 | 0.080* | |
C2 | 1.3713 (4) | 0.6972 (2) | 0.00528 (18) | 0.0797 (7) | |
H2B | 1.3839 | 0.7481 | −0.0476 | 0.096* | |
C3 | 1.4536 (4) | 0.7293 (2) | 0.0667 (2) | 0.0851 (8) | |
H3A | 1.5233 | 0.8012 | 0.0558 | 0.102* | |
C4 | 1.4336 (4) | 0.6544 (3) | 0.14570 (19) | 0.0851 (8) | |
H4A | 1.4881 | 0.6767 | 0.1883 | 0.102* | |
C5 | 1.3326 (3) | 0.5465 (2) | 0.16131 (16) | 0.0712 (6) | |
H5A | 1.3205 | 0.4955 | 0.2142 | 0.085* | |
C6 | 1.2499 (3) | 0.51465 (19) | 0.09836 (14) | 0.0572 (5) | |
C7 | 0.9978 (3) | 0.36762 (18) | 0.17430 (12) | 0.0511 (5) | |
C8 | 0.9084 (3) | 0.25406 (17) | 0.18880 (11) | 0.0488 (4) | |
C9 | 0.7401 (3) | 0.25055 (17) | 0.25779 (11) | 0.0464 (4) | |
C10 | 0.6210 (3) | 0.13903 (17) | 0.28969 (11) | 0.0477 (4) | |
C11 | 0.4610 (3) | 0.1211 (2) | 0.25139 (14) | 0.0670 (6) | |
H11A | 0.4247 | 0.1799 | 0.2050 | 0.080* | |
C12 | 0.3543 (4) | 0.0164 (3) | 0.28151 (19) | 0.0899 (8) | |
H12A | 0.2458 | 0.0051 | 0.2556 | 0.108* | |
C13 | 0.4077 (5) | −0.0709 (3) | 0.34945 (19) | 0.0919 (9) | |
H13A | 0.3382 | −0.1427 | 0.3688 | 0.110* | |
C14 | 0.5630 (5) | −0.0524 (2) | 0.38873 (17) | 0.0837 (8) | |
H14A | 0.5969 | −0.1105 | 0.4358 | 0.100* | |
C15 | 0.6697 (4) | 0.0519 (2) | 0.35904 (14) | 0.0652 (6) | |
H15A | 0.7758 | 0.0637 | 0.3861 | 0.078* | |
C16 | 0.7077 (3) | 0.35877 (18) | 0.29284 (12) | 0.0510 (5) | |
C17 | 0.5610 (3) | 0.4031 (2) | 0.36344 (13) | 0.0592 (5) | |
C18 | 0.3834 (3) | 0.33914 (19) | 0.39894 (13) | 0.0560 (5) | |
H18A | 0.3461 | 0.2800 | 0.3718 | 0.067* | |
C19 | 0.2683 (3) | 0.3641 (2) | 0.47208 (13) | 0.0578 (5) | |
H19A | 0.3165 | 0.4201 | 0.4984 | 0.069* | |
C20 | 0.0008 (4) | 0.2328 (3) | 0.47236 (17) | 0.0910 (9) | |
H20A | 0.0754 | 0.2277 | 0.4173 | 0.136* | |
H20B | −0.1422 | 0.2665 | 0.4687 | 0.136* | |
H20C | 0.0078 | 0.1486 | 0.5061 | 0.136* | |
C21 | −0.0001 (4) | 0.3365 (3) | 0.59369 (16) | 0.0827 (7) | |
H21A | 0.0754 | 0.3926 | 0.6120 | 0.124* | |
H21B | 0.0049 | 0.2554 | 0.6311 | 0.124* | |
H21C | −0.1424 | 0.3745 | 0.5933 | 0.124* | |
C22 | 0.9907 (3) | 0.15623 (19) | 0.13755 (13) | 0.0578 (5) | |
C23 | 0.9697 (5) | −0.0552 (2) | 0.11770 (18) | 0.0968 (9) | |
H23A | 0.9220 | −0.0306 | 0.0637 | 0.116* | |
H23B | 1.1205 | −0.0732 | 0.1083 | 0.116* | |
C24 | 0.8828 (6) | −0.1672 (3) | 0.1632 (2) | 0.1179 (12) | |
H24A | 0.9261 | −0.2363 | 0.1324 | 0.177* | |
H24B | 0.7335 | −0.1494 | 0.1713 | 0.177* | |
H24C | 0.9302 | −0.1910 | 0.2166 | 0.177* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0597 (3) | 0.0517 (3) | 0.0638 (3) | −0.0230 (2) | 0.0070 (2) | −0.0104 (2) |
O1 | 0.0851 (11) | 0.0547 (8) | 0.0723 (10) | −0.0266 (8) | 0.0191 (8) | −0.0197 (7) |
O2 | 0.0937 (12) | 0.0687 (10) | 0.0789 (11) | −0.0259 (9) | 0.0347 (9) | −0.0200 (8) |
O3 | 0.1033 (13) | 0.0889 (12) | 0.0949 (13) | −0.0538 (11) | 0.0363 (10) | −0.0462 (10) |
N1 | 0.0593 (10) | 0.0572 (10) | 0.0626 (10) | −0.0223 (8) | 0.0135 (8) | −0.0077 (8) |
N2 | 0.0615 (10) | 0.0710 (11) | 0.0586 (10) | −0.0229 (9) | 0.0085 (8) | −0.0076 (9) |
C1 | 0.0562 (12) | 0.0691 (14) | 0.0638 (13) | −0.0128 (10) | 0.0044 (10) | 0.0052 (11) |
C2 | 0.0621 (14) | 0.0681 (15) | 0.0893 (18) | −0.0143 (12) | 0.0089 (13) | 0.0193 (13) |
C3 | 0.0613 (14) | 0.0622 (14) | 0.121 (2) | −0.0241 (11) | 0.0048 (15) | 0.0067 (15) |
C4 | 0.0691 (15) | 0.0835 (17) | 0.106 (2) | −0.0331 (13) | −0.0149 (14) | −0.0050 (15) |
C5 | 0.0605 (13) | 0.0720 (14) | 0.0771 (15) | −0.0246 (11) | −0.0114 (11) | 0.0097 (12) |
C6 | 0.0418 (10) | 0.0529 (11) | 0.0688 (13) | −0.0110 (8) | 0.0034 (9) | 0.0015 (9) |
C7 | 0.0478 (10) | 0.0496 (10) | 0.0522 (10) | −0.0124 (8) | −0.0020 (8) | −0.0007 (8) |
C8 | 0.0486 (10) | 0.0471 (10) | 0.0484 (10) | −0.0126 (8) | −0.0014 (8) | −0.0030 (8) |
C9 | 0.0460 (10) | 0.0475 (10) | 0.0444 (9) | −0.0119 (8) | −0.0062 (8) | −0.0009 (8) |
C10 | 0.0478 (10) | 0.0465 (10) | 0.0466 (10) | −0.0121 (8) | −0.0008 (8) | −0.0041 (8) |
C11 | 0.0658 (13) | 0.0723 (14) | 0.0640 (13) | −0.0282 (11) | −0.0150 (11) | 0.0052 (11) |
C12 | 0.0818 (17) | 0.099 (2) | 0.0988 (19) | −0.0515 (15) | −0.0179 (15) | −0.0043 (16) |
C13 | 0.097 (2) | 0.0732 (16) | 0.103 (2) | −0.0499 (15) | 0.0031 (17) | 0.0069 (15) |
C14 | 0.101 (2) | 0.0623 (14) | 0.0775 (16) | −0.0230 (14) | −0.0109 (15) | 0.0192 (12) |
C15 | 0.0724 (14) | 0.0579 (12) | 0.0632 (13) | −0.0174 (10) | −0.0158 (11) | 0.0062 (10) |
C16 | 0.0487 (10) | 0.0520 (11) | 0.0513 (10) | −0.0174 (8) | −0.0003 (8) | −0.0048 (8) |
C17 | 0.0621 (12) | 0.0575 (12) | 0.0577 (12) | −0.0190 (10) | 0.0036 (10) | −0.0117 (9) |
C18 | 0.0569 (12) | 0.0549 (11) | 0.0556 (11) | −0.0150 (9) | 0.0013 (9) | −0.0106 (9) |
C19 | 0.0581 (12) | 0.0532 (11) | 0.0594 (12) | −0.0149 (9) | 0.0022 (9) | −0.0071 (9) |
C20 | 0.0783 (17) | 0.130 (2) | 0.0743 (16) | −0.0554 (17) | −0.0024 (13) | −0.0165 (16) |
C21 | 0.0838 (17) | 0.0813 (16) | 0.0765 (16) | −0.0251 (13) | 0.0255 (13) | −0.0201 (13) |
C22 | 0.0592 (12) | 0.0525 (11) | 0.0578 (12) | −0.0138 (9) | 0.0019 (10) | −0.0049 (9) |
C23 | 0.135 (3) | 0.0640 (15) | 0.0864 (18) | −0.0254 (16) | 0.0287 (17) | −0.0319 (13) |
C24 | 0.144 (3) | 0.0774 (19) | 0.135 (3) | −0.0471 (19) | 0.028 (2) | −0.0445 (19) |
S1—C7 | 1.716 (2) | C10—C15 | 1.376 (3) |
S1—C16 | 1.7454 (18) | C10—C11 | 1.376 (3) |
O1—C22 | 1.327 (2) | C11—C12 | 1.380 (3) |
O1—C23 | 1.443 (3) | C11—H11A | 0.9300 |
O2—C22 | 1.211 (2) | C12—C13 | 1.368 (4) |
O3—C17 | 1.240 (2) | C12—H12A | 0.9300 |
N1—C7 | 1.361 (2) | C13—C14 | 1.362 (4) |
N1—C6 | 1.414 (3) | C13—H13A | 0.9300 |
N1—H1A | 0.8600 | C14—C15 | 1.375 (3) |
N2—C19 | 1.332 (3) | C14—H14A | 0.9300 |
N2—C20 | 1.451 (3) | C15—H15A | 0.9300 |
N2—C21 | 1.451 (3) | C16—C17 | 1.480 (3) |
C1—C2 | 1.374 (3) | C17—C18 | 1.425 (3) |
C1—C6 | 1.381 (3) | C18—C19 | 1.357 (3) |
C1—H1B | 0.9300 | C18—H18A | 0.9300 |
C2—C3 | 1.354 (4) | C19—H19A | 0.9300 |
C2—H2B | 0.9300 | C20—H20A | 0.9600 |
C3—C4 | 1.385 (4) | C20—H20B | 0.9600 |
C3—H3A | 0.9300 | C20—H20C | 0.9600 |
C4—C5 | 1.382 (3) | C21—H21A | 0.9600 |
C4—H4A | 0.9300 | C21—H21B | 0.9600 |
C5—C6 | 1.377 (3) | C21—H21C | 0.9600 |
C5—H5A | 0.9300 | C23—C24 | 1.426 (4) |
C7—C8 | 1.395 (3) | C23—H23A | 0.9700 |
C8—C9 | 1.440 (2) | C23—H23B | 0.9700 |
C8—C22 | 1.455 (3) | C24—H24A | 0.9600 |
C9—C16 | 1.367 (3) | C24—H24B | 0.9600 |
C9—C10 | 1.490 (2) | C24—H24C | 0.9600 |
C7—S1—C16 | 91.40 (9) | C12—C13—H13A | 120.1 |
C22—O1—C23 | 118.51 (17) | C13—C14—C15 | 120.2 (2) |
C7—N1—C6 | 125.94 (18) | C13—C14—H14A | 119.9 |
C7—N1—H1A | 117.0 | C15—C14—H14A | 119.9 |
C6—N1—H1A | 117.0 | C14—C15—C10 | 120.6 (2) |
C19—N2—C20 | 120.91 (19) | C14—C15—H15A | 119.7 |
C19—N2—C21 | 121.6 (2) | C10—C15—H15A | 119.7 |
C20—N2—C21 | 117.18 (19) | C9—C16—C17 | 134.44 (18) |
C2—C1—C6 | 119.8 (2) | C9—C16—S1 | 112.14 (14) |
C2—C1—H1B | 120.1 | C17—C16—S1 | 113.40 (14) |
C6—C1—H1B | 120.1 | O3—C17—C18 | 123.6 (2) |
C3—C2—C1 | 121.0 (2) | O3—C17—C16 | 116.37 (18) |
C3—C2—H2B | 119.5 | C18—C17—C16 | 120.04 (18) |
C1—C2—H2B | 119.5 | C19—C18—C17 | 120.38 (19) |
C2—C3—C4 | 119.7 (2) | C19—C18—H18A | 119.8 |
C2—C3—H3A | 120.2 | C17—C18—H18A | 119.8 |
C4—C3—H3A | 120.2 | N2—C19—C18 | 126.8 (2) |
C5—C4—C3 | 120.0 (3) | N2—C19—H19A | 116.6 |
C5—C4—H4A | 120.0 | C18—C19—H19A | 116.6 |
C3—C4—H4A | 120.0 | N2—C20—H20A | 109.5 |
C6—C5—C4 | 119.8 (2) | N2—C20—H20B | 109.5 |
C6—C5—H5A | 120.1 | H20A—C20—H20B | 109.5 |
C4—C5—H5A | 120.1 | N2—C20—H20C | 109.5 |
C5—C6—C1 | 119.7 (2) | H20A—C20—H20C | 109.5 |
C5—C6—N1 | 121.13 (19) | H20B—C20—H20C | 109.5 |
C1—C6—N1 | 119.1 (2) | N2—C21—H21A | 109.5 |
N1—C7—C8 | 125.77 (18) | N2—C21—H21B | 109.5 |
N1—C7—S1 | 121.90 (15) | H21A—C21—H21B | 109.5 |
C8—C7—S1 | 112.31 (14) | N2—C21—H21C | 109.5 |
C7—C8—C9 | 111.73 (17) | H21A—C21—H21C | 109.5 |
C7—C8—C22 | 120.01 (17) | H21B—C21—H21C | 109.5 |
C9—C8—C22 | 128.25 (17) | O2—C22—O1 | 122.38 (19) |
C16—C9—C8 | 112.39 (16) | O2—C22—C8 | 124.57 (19) |
C16—C9—C10 | 123.85 (17) | O1—C22—C8 | 113.04 (17) |
C8—C9—C10 | 123.71 (16) | C24—C23—O1 | 109.3 (2) |
C15—C10—C11 | 118.77 (18) | C24—C23—H23A | 109.8 |
C15—C10—C9 | 119.88 (17) | O1—C23—H23A | 109.8 |
C11—C10—C9 | 121.34 (17) | C24—C23—H23B | 109.8 |
C10—C11—C12 | 120.3 (2) | O1—C23—H23B | 109.8 |
C10—C11—H11A | 119.8 | H23A—C23—H23B | 108.3 |
C12—C11—H11A | 119.8 | C23—C24—H24A | 109.5 |
C13—C12—C11 | 120.2 (2) | C23—C24—H24B | 109.5 |
C13—C12—H12A | 119.9 | H24A—C24—H24B | 109.5 |
C11—C12—H12A | 119.9 | C23—C24—H24C | 109.5 |
C14—C13—C12 | 119.8 (2) | H24A—C24—H24C | 109.5 |
C14—C13—H13A | 120.1 | H24B—C24—H24C | 109.5 |
C6—C1—C2—C3 | 0.0 (4) | C10—C11—C12—C13 | −0.4 (4) |
C1—C2—C3—C4 | −0.6 (4) | C11—C12—C13—C14 | 1.8 (5) |
C2—C3—C4—C5 | 1.0 (4) | C12—C13—C14—C15 | −1.7 (5) |
C3—C4—C5—C6 | −0.8 (4) | C13—C14—C15—C10 | 0.2 (4) |
C4—C5—C6—C1 | 0.2 (3) | C11—C10—C15—C14 | 1.1 (3) |
C4—C5—C6—N1 | 177.3 (2) | C9—C10—C15—C14 | −179.2 (2) |
C2—C1—C6—C5 | 0.2 (3) | C8—C9—C16—C17 | −179.4 (2) |
C2—C1—C6—N1 | −177.0 (2) | C10—C9—C16—C17 | −1.9 (4) |
C7—N1—C6—C5 | 52.8 (3) | C8—C9—C16—S1 | −1.2 (2) |
C7—N1—C6—C1 | −130.1 (2) | C10—C9—C16—S1 | 176.24 (14) |
C6—N1—C7—C8 | −177.4 (2) | C7—S1—C16—C9 | 1.72 (16) |
C6—N1—C7—S1 | 4.4 (3) | C7—S1—C16—C17 | −179.70 (16) |
C16—S1—C7—N1 | 176.63 (17) | C9—C16—C17—O3 | 168.0 (2) |
C16—S1—C7—C8 | −1.78 (16) | S1—C16—C17—O3 | −10.2 (3) |
N1—C7—C8—C9 | −176.91 (18) | C9—C16—C17—C18 | −13.9 (4) |
S1—C7—C8—C9 | 1.4 (2) | S1—C16—C17—C18 | 167.92 (16) |
N1—C7—C8—C22 | 4.2 (3) | O3—C17—C18—C19 | −13.4 (4) |
S1—C7—C8—C22 | −177.48 (15) | C16—C17—C18—C19 | 168.64 (19) |
C7—C8—C9—C16 | −0.1 (2) | C20—N2—C19—C18 | −2.6 (4) |
C22—C8—C9—C16 | 178.68 (19) | C21—N2—C19—C18 | 171.4 (2) |
C7—C8—C9—C10 | −177.58 (17) | C17—C18—C19—N2 | 176.3 (2) |
C22—C8—C9—C10 | 1.2 (3) | C23—O1—C22—O2 | −3.0 (4) |
C16—C9—C10—C15 | −78.4 (3) | C23—O1—C22—C8 | 178.1 (2) |
C8—C9—C10—C15 | 98.8 (2) | C7—C8—C22—O2 | −6.2 (3) |
C16—C9—C10—C11 | 101.3 (2) | C9—C8—C22—O2 | 175.1 (2) |
C8—C9—C10—C11 | −81.5 (3) | C7—C8—C22—O1 | 172.74 (18) |
C15—C10—C11—C12 | −1.0 (4) | C9—C8—C22—O1 | −6.0 (3) |
C9—C10—C11—C12 | 179.3 (2) | C22—O1—C23—C24 | 172.2 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2 | 0.86 | 2.07 | 2.709 (3) | 130 |
C19—H19A···O3i | 0.93 | 2.42 | 3.294 (3) | 157 |
C21—H21A···O3i | 0.96 | 2.60 | 3.491 (4) | 155 |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C24H24N2O3S |
Mr | 420.51 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 273 |
a, b, c (Å) | 6.5776 (9), 10.7119 (14), 16.516 (2) |
α, β, γ (°) | 78.459 (3), 79.743 (3), 80.765 (3) |
V (Å3) | 1112.5 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.17 |
Crystal size (mm) | 0.28 × 0.27 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.953, 0.970 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12618, 4123, 3373 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.142, 1.05 |
No. of reflections | 4123 |
No. of parameters | 272 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.27, −0.20 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), PARST (Nardelli, 1995) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2 | 0.8600 | 2.0700 | 2.709 (3) | 130.00 |
C19—H19A···O3i | 0.9300 | 2.4200 | 3.294 (3) | 157.00 |
C21—H21A···O3i | 0.9600 | 2.6000 | 3.491 (4) | 155.00 |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Acknowledgements
This project was supported by King Saud University, Deanship of Scientific Research, College of Science Research Center.
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.
Thiophene moeities containing hetereocyclic compounds are well known for their wide range of biological activities such as antidiabetic, antiinflammatory, antibacterial, antidepressent and antiellergic (Mishra et al., 2011). Mabkhot and co-workers have been extensively involved in the synthesis of biologically valuable thiophene derivatives (Mabkhot et al., 2011; Mabkhot, Barakat & Alshahrani, 2012; Mabkhot, Barakat, Al-Majid Alamary & Al-Nahary, 2012; Mabkhot, Barakat, Al-Majid & Alshahrani, 2012). The title compound is an enaminone derivative of a substituted thiophene nucleus, and was synthesized in order to create a library for the evaluation of different biological activities.
The structure of the title compound is composed of a central thiophene unit (S1/C7–C9/C16) with an aminophenyl (N1/C1–C6), an ethyl acyl (O1–O2/C22—C24), a phenyl (C10–C15) and an enaminone (O3/N2/C17–C21) susbtituent attached to C7, C8, C9 and C16, respectively. The thiophene and phenyl rings form dihedral angles of 55.65 (11), 79.60 (11) and 24.67 (12)° between S1/C7–C9/C16 and C1–C6, S1/C7–C9/C16 and C10–C15) and C1–C6 and C10–C15, respectively. The C18–C19 (1.357 (3) Å) olefinic bond of the enaminone side chain has an E configuration. The shorter C—C bond length of C17–C18 (1.423 (3) Å), as compared to single bond (1.54 Å), indicates that the olefinic bond is involved in conjugation with a carbonyl functionality (C17–O3, 1.240 (2) Å). The bond lengths and angles were found to be in same range as in other related compounds (Cao et al., 2003). The conformation of the molecule is stabilized by an N1—H1A···O2 intramolecular hydrogen bond to form an S6 graph set ring motif (Fig. 1, Table 1). In the crystal (Fig. 2), centrosymmetrically related molecules are linked via C19—H19A···O3 and C21—H21A···O3 intermolecular hydrogen bonds (symmetry codes as in Table 1) into dimers.