organic compounds
(4Z)-4-[(2E)-1-Hydroxy-3-(3-nitrophenyl)prop-2-en-1-ylidene]-3-methyl-1-(4-methylphenyl)-1H-pyrazol-5(4H)-one
aInstitute of Chemistry, University of the Punjab, Lahore, Pakistan, bUniversity of Sargodha, Department of Physics, Sargodha, Pakistan, cDepartment of Chemistry, Islamia University, Bahawalpur, Pakistan, and dApplied Chemistry Research Center, PCSIR Laboratories Complex, Lahore 54600, Pakistan
*Correspondence e-mail: dmntahir_uos@yahoo.com
In the title compound, C20H17N3O4, the dihedral angles between the heterocyclic ring and the toluene and nitrobenzene rings are 4.21 (15) and 11.43 (14)°, respectively. The whole molecule is close to planar (r.m.s. deviation for the 27 non-H atoms = 0.171 Å). Two S(6) rings are formed due to intramolecular C—H⋯O and O—H⋯O hydrogen bonds. In the crystal, inversion dimers linked by pairs of C—H⋯O bonds generate R22(10) loops and further C—H⋯O bonds link the dimers along the b-axis direction. There exist π–π interactions between the heterocyclic rings at a centroid–centroid distance of 3.7126 (10) Å and between the centroids of the benzene rings at a distance of 3.8710 (16) Å.
Related literature
For background and a related structure, see: Mukhtar et al. (2010). For other related structures, see: Udaya Lakshmi et al. (2005); Jadeja & Shah (2007).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supporting information
https://doi.org/10.1107/S1600536812025238/hb6835sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812025238/hb6835Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536812025238/hb6835Isup3.cml
1-(5-Hydroxy-3-methyl-1-p-tolyl-1H-pyrazol-4-yl)ethanone (1 g, 4.34 mmol), m-nitrobenzaldehyde (0.65 g; 4.34 mmol), with one drop of piperidine in ethanol (30 ml) was heated on boiling water bath for half an hour and crude product was obtained on cooling. The product was recrystallized by ethanol to get orange needles of the title compound.
The H-atoms were positioned geometrically (O—H = 0.82, C–H = 0.93–0.96 Å) and refined as riding with Uiso(H) = xUeq(C, O), where x = 1.5 for methyl and x = 1.2 for all other H-atoms.
We have reported the synthesis and
of (II) i.e., Ethyl 2-benzamido-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (Mukhtar et al., 2010). The title compound (I, Fig. 1) is being reported here in continuation to synthesize various thiophene derivatives.The
of 3-nitrocinnamic acid (Udaya Lakshmi et al., 2005) and 5-methyl-4-(phenyl(phenylamino)methylene)-2-p-tolyl-2,4-dihydropyrazol-3-one (Jadeja & Shah, 2007) have been published which contain the fragments of the title compound.In (I), the toluene group A (C1—C7) and the part of 5-methyl-2,4-dihydro- 3H-pyrazol-3-one B (C8—C11/N1/N2/O1) are planar with r.m.s. deviation of 0.0052 and 0.0171 Å, respectively. The dihedral angle between A/B is 4.42 (10)°. The part of 3-nitrocinnamic acid C (C12—C20/N3/O2/O3/O4) has r. m. s. deviation of 0.1229 Å from the plane in which O3 atom deviate to 0.2632 (17) Å. The dihedral angle between A/C abd B/C is 7.93 (6) and 12.26 (7)°, respectively. In the title compound two S(6) ring motifs are formed due to intramolecular H-bondings of C—H···O and O—H···O types (Table 1, Fig. 1). The molecules are dimerized from nitrobenzene due to C—H···O type of H-bondings and form R22(10) ring motifs (Table 1, Fig. 2). The dimers are again interlinked from nitrobenzene due to C—H···O type of H-bondings. There exist π···π interaction between Cg1···Cg1i [i = - x, y, 1/2 - z] at a distance of 3.7126 (10) Å, where Cg1 is the centroid of heterocyclic five membered ring (N1/N2/C8/C10/C11). Similarly, there also exist π···π interaction between Cg2···Cg3ii [ii = - x, - y, 1 - z] and Cg3···Cg2ii at a distance of 3.8710 (16) Å, where Cg2 and Cg3 are the centroids of benzene rings (C1—C6) and (C15—C20).
For background and a related structure, see: Mukhtar et al. (2010). For other related structures, see: Udaya Lakshmi et al. (2005); Jadeja & Shah (2007).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).C20H17N3O4 | F(000) = 1520 |
Mr = 363.37 | Dx = 1.390 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 1823 reflections |
a = 19.8712 (16) Å | θ = 2.1–26.0° |
b = 12.1917 (10) Å | µ = 0.10 mm−1 |
c = 16.733 (2) Å | T = 296 K |
β = 121.188 (4)° | Rod, orange |
V = 3467.9 (6) Å3 | 0.35 × 0.18 × 0.17 mm |
Z = 8 |
Bruker Kappa APEXII CCD diffractometer | 3328 independent reflections |
Radiation source: fine-focus sealed tube | 1823 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.039 |
Detector resolution: 8.00 pixels mm-1 | θmax = 26.0°, θmin = 2.1° |
ω scans | h = −22→24 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | k = −15→15 |
Tmin = 0.972, Tmax = 0.983 | l = −20→13 |
12231 measured reflections |
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)] = 0.052 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0688P)2] where P = (Fo2 + 2Fc2)/3 |
3328 reflections | (Δ/σ)max < 0.001 |
247 parameters | Δρmax = 0.16 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C20H17N3O4 | V = 3467.9 (6) Å3 |
Mr = 363.37 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 19.8712 (16) Å | µ = 0.10 mm−1 |
b = 12.1917 (10) Å | T = 296 K |
c = 16.733 (2) Å | 0.35 × 0.18 × 0.17 mm |
β = 121.188 (4)° |
Bruker Kappa APEXII CCD diffractometer | 3328 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 1823 reflections with I > 2σ(I) |
Tmin = 0.972, Tmax = 0.983 | Rint = 0.039 |
12231 measured reflections |
R[F2 > 2σ(F2)] = 0.052 | 0 restraints |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.16 e Å−3 |
3328 reflections | Δρmin = −0.22 e Å−3 |
247 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
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 | ||
O1 | −0.08035 (9) | 0.17748 (13) | 0.26833 (13) | 0.0730 (6) | |
O2 | 0.04784 (9) | 0.17674 (14) | 0.42872 (13) | 0.0821 (7) | |
O3 | 0.36766 (10) | 0.22769 (14) | 0.89614 (12) | 0.0776 (7) | |
O4 | 0.45928 (10) | 0.10845 (15) | 0.95844 (14) | 0.0945 (8) | |
N1 | −0.12499 (10) | −0.00138 (14) | 0.21735 (13) | 0.0471 (6) | |
N2 | −0.09808 (10) | −0.10774 (14) | 0.24985 (14) | 0.0569 (7) | |
N3 | 0.39439 (11) | 0.13844 (17) | 0.89657 (14) | 0.0581 (8) | |
C1 | −0.19601 (12) | 0.01116 (18) | 0.12989 (15) | 0.0455 (8) | |
C2 | −0.23410 (13) | −0.0800 (2) | 0.07708 (16) | 0.0553 (8) | |
C3 | −0.30350 (13) | −0.0687 (2) | −0.00721 (17) | 0.0605 (9) | |
C4 | −0.33702 (12) | 0.0320 (2) | −0.04231 (17) | 0.0580 (9) | |
C5 | −0.29776 (13) | 0.1220 (2) | 0.01114 (18) | 0.0625 (9) | |
C6 | −0.22799 (13) | 0.11356 (19) | 0.09640 (17) | 0.0570 (9) | |
C7 | −0.41344 (14) | 0.0434 (3) | −0.13425 (18) | 0.0807 (10) | |
C8 | −0.03201 (13) | −0.09808 (19) | 0.32890 (17) | 0.0529 (8) | |
C9 | 0.01174 (15) | −0.19835 (19) | 0.3795 (2) | 0.0829 (10) | |
C10 | −0.01225 (12) | 0.01440 (18) | 0.35383 (16) | 0.0470 (7) | |
C11 | −0.07411 (12) | 0.07485 (18) | 0.27784 (16) | 0.0498 (8) | |
C12 | 0.04790 (12) | 0.06930 (19) | 0.42923 (16) | 0.0529 (8) | |
C13 | 0.11229 (12) | 0.01857 (19) | 0.51147 (15) | 0.0524 (8) | |
C14 | 0.16670 (12) | 0.07441 (19) | 0.58368 (16) | 0.0558 (8) | |
C15 | 0.23504 (12) | 0.03180 (18) | 0.66822 (15) | 0.0468 (8) | |
C16 | 0.28189 (12) | 0.10222 (17) | 0.74142 (16) | 0.0484 (7) | |
C17 | 0.34695 (11) | 0.06209 (17) | 0.82033 (15) | 0.0462 (7) | |
C18 | 0.36860 (12) | −0.04585 (19) | 0.83085 (17) | 0.0533 (8) | |
C19 | 0.32218 (13) | −0.11635 (19) | 0.75823 (18) | 0.0594 (9) | |
C20 | 0.25664 (13) | −0.07833 (19) | 0.67876 (17) | 0.0558 (8) | |
H2 | −0.21290 | −0.14941 | 0.09841 | 0.0664* | |
H2A | 0.00843 | 0.19892 | 0.38131 | 0.0985* | |
H3 | −0.32857 | −0.13128 | −0.04158 | 0.0726* | |
H5 | −0.31886 | 0.19129 | −0.01079 | 0.0749* | |
H6 | −0.20295 | 0.17621 | 0.13074 | 0.0684* | |
H7A | −0.41585 | −0.01104 | −0.17713 | 0.1210* | |
H7B | −0.41647 | 0.11515 | −0.15951 | 0.1210* | |
H7C | −0.45667 | 0.03326 | −0.12467 | 0.1210* | |
H9A | 0.01385 | −0.20300 | 0.43799 | 0.1245* | |
H9B | 0.06423 | −0.19504 | 0.39072 | 0.1245* | |
H9C | −0.01457 | −0.26184 | 0.34237 | 0.1245* | |
H13 | 0.11552 | −0.05758 | 0.51357 | 0.0629* | |
H14 | 0.16074 | 0.15024 | 0.58025 | 0.0669* | |
H16 | 0.26930 | 0.17631 | 0.73710 | 0.0581* | |
H18 | 0.41302 | −0.07088 | 0.88501 | 0.0640* | |
H19 | 0.33541 | −0.19024 | 0.76316 | 0.0712* | |
H20 | 0.22594 | −0.12729 | 0.63083 | 0.0669* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0611 (11) | 0.0537 (9) | 0.0678 (13) | 0.0053 (8) | 0.0077 (10) | 0.0014 (9) |
O2 | 0.0631 (12) | 0.0662 (11) | 0.0690 (15) | 0.0031 (8) | 0.0003 (10) | −0.0037 (10) |
O3 | 0.0780 (12) | 0.0638 (11) | 0.0603 (13) | 0.0089 (9) | 0.0141 (10) | −0.0164 (10) |
O4 | 0.0616 (12) | 0.0917 (13) | 0.0686 (14) | 0.0114 (10) | −0.0097 (11) | −0.0236 (11) |
N1 | 0.0395 (10) | 0.0538 (10) | 0.0368 (11) | 0.0017 (8) | 0.0119 (9) | 0.0074 (9) |
N2 | 0.0505 (11) | 0.0524 (11) | 0.0455 (13) | −0.0008 (9) | 0.0091 (11) | 0.0111 (10) |
N3 | 0.0515 (12) | 0.0620 (13) | 0.0438 (14) | 0.0006 (10) | 0.0127 (11) | −0.0069 (11) |
C1 | 0.0357 (11) | 0.0600 (14) | 0.0367 (14) | 0.0024 (10) | 0.0158 (11) | 0.0056 (12) |
C2 | 0.0492 (13) | 0.0615 (14) | 0.0434 (15) | 0.0006 (11) | 0.0156 (13) | 0.0049 (13) |
C3 | 0.0494 (14) | 0.0755 (17) | 0.0424 (16) | −0.0071 (12) | 0.0138 (13) | −0.0026 (14) |
C4 | 0.0393 (12) | 0.0889 (18) | 0.0383 (14) | 0.0042 (13) | 0.0147 (12) | 0.0052 (15) |
C5 | 0.0512 (14) | 0.0725 (17) | 0.0488 (17) | 0.0145 (12) | 0.0154 (14) | 0.0123 (14) |
C6 | 0.0497 (14) | 0.0627 (15) | 0.0462 (16) | 0.0065 (11) | 0.0161 (13) | 0.0020 (12) |
C7 | 0.0519 (14) | 0.118 (2) | 0.0482 (17) | 0.0107 (15) | 0.0090 (14) | 0.0060 (17) |
C8 | 0.0438 (13) | 0.0600 (14) | 0.0410 (15) | −0.0024 (10) | 0.0121 (12) | 0.0089 (12) |
C9 | 0.0701 (17) | 0.0590 (15) | 0.071 (2) | −0.0015 (13) | 0.0023 (16) | 0.0208 (15) |
C10 | 0.0364 (11) | 0.0599 (14) | 0.0382 (13) | −0.0017 (10) | 0.0148 (11) | 0.0039 (12) |
C11 | 0.0426 (13) | 0.0560 (14) | 0.0432 (15) | 0.0002 (11) | 0.0169 (12) | 0.0001 (12) |
C12 | 0.0452 (13) | 0.0583 (14) | 0.0481 (16) | 0.0013 (11) | 0.0192 (13) | 0.0009 (13) |
C13 | 0.0395 (12) | 0.0648 (14) | 0.0394 (15) | −0.0024 (11) | 0.0108 (12) | −0.0002 (13) |
C14 | 0.0469 (13) | 0.0640 (14) | 0.0457 (16) | 0.0008 (11) | 0.0164 (13) | 0.0018 (13) |
C15 | 0.0394 (12) | 0.0590 (14) | 0.0367 (13) | −0.0045 (10) | 0.0160 (11) | −0.0026 (12) |
C16 | 0.0458 (12) | 0.0510 (12) | 0.0426 (14) | 0.0001 (10) | 0.0187 (12) | −0.0044 (12) |
C17 | 0.0406 (12) | 0.0556 (13) | 0.0352 (13) | −0.0061 (10) | 0.0146 (12) | −0.0081 (12) |
C18 | 0.0424 (12) | 0.0589 (14) | 0.0462 (15) | 0.0034 (11) | 0.0141 (12) | 0.0009 (13) |
C19 | 0.0539 (14) | 0.0516 (13) | 0.0542 (17) | −0.0058 (11) | 0.0150 (14) | −0.0048 (13) |
C20 | 0.0475 (13) | 0.0571 (14) | 0.0496 (16) | −0.0116 (11) | 0.0159 (13) | −0.0092 (13) |
O1—C11 | 1.259 (3) | C14—C15 | 1.458 (3) |
O2—C12 | 1.310 (3) | C15—C20 | 1.393 (3) |
O3—N3 | 1.209 (3) | C15—C16 | 1.387 (3) |
O4—N3 | 1.219 (3) | C16—C17 | 1.373 (3) |
O2—H2A | 0.8200 | C17—C18 | 1.367 (3) |
N1—C1 | 1.421 (3) | C18—C19 | 1.380 (3) |
N1—C11 | 1.360 (3) | C19—C20 | 1.373 (4) |
N1—N2 | 1.401 (2) | C2—H2 | 0.9300 |
N2—C8 | 1.300 (3) | C3—H3 | 0.9300 |
N3—C17 | 1.462 (3) | C5—H5 | 0.9300 |
C1—C2 | 1.377 (3) | C6—H6 | 0.9300 |
C1—C6 | 1.381 (3) | C7—H7A | 0.9600 |
C2—C3 | 1.377 (4) | C7—H7B | 0.9600 |
C3—C4 | 1.375 (3) | C7—H7C | 0.9600 |
C4—C5 | 1.375 (4) | C9—H9A | 0.9600 |
C4—C7 | 1.508 (4) | C9—H9B | 0.9600 |
C5—C6 | 1.386 (4) | C9—H9C | 0.9600 |
C8—C10 | 1.428 (3) | C13—H13 | 0.9300 |
C8—C9 | 1.485 (4) | C14—H14 | 0.9300 |
C10—C11 | 1.433 (3) | C16—H16 | 0.9300 |
C10—C12 | 1.381 (3) | C18—H18 | 0.9300 |
C12—C13 | 1.446 (3) | C19—H19 | 0.9300 |
C13—C14 | 1.319 (3) | C20—H20 | 0.9300 |
C12—O2—H2A | 109.00 | C16—C17—C18 | 122.9 (2) |
N2—N1—C11 | 110.88 (18) | N3—C17—C16 | 118.21 (19) |
C1—N1—C11 | 130.70 (18) | C17—C18—C19 | 117.6 (2) |
N2—N1—C1 | 118.39 (17) | C18—C19—C20 | 120.6 (2) |
N1—N2—C8 | 107.02 (18) | C15—C20—C19 | 121.6 (2) |
O3—N3—C17 | 119.0 (2) | C1—C2—H2 | 120.00 |
O4—N3—C17 | 118.1 (2) | C3—C2—H2 | 120.00 |
O3—N3—O4 | 122.9 (2) | C2—C3—H3 | 119.00 |
N1—C1—C6 | 121.2 (2) | C4—C3—H3 | 119.00 |
C2—C1—C6 | 119.0 (2) | C4—C5—H5 | 119.00 |
N1—C1—C2 | 119.8 (2) | C6—C5—H5 | 119.00 |
C1—C2—C3 | 120.2 (2) | C1—C6—H6 | 120.00 |
C2—C3—C4 | 122.3 (2) | C5—C6—H6 | 120.00 |
C3—C4—C7 | 121.8 (2) | C4—C7—H7A | 109.00 |
C5—C4—C7 | 121.5 (2) | C4—C7—H7B | 109.00 |
C3—C4—C5 | 116.7 (2) | C4—C7—H7C | 109.00 |
C4—C5—C6 | 122.6 (2) | H7A—C7—H7B | 109.00 |
C1—C6—C5 | 119.3 (2) | H7A—C7—H7C | 109.00 |
N2—C8—C9 | 119.4 (2) | H7B—C7—H7C | 109.00 |
N2—C8—C10 | 111.4 (2) | C8—C9—H9A | 109.00 |
C9—C8—C10 | 129.3 (2) | C8—C9—H9B | 109.00 |
C8—C10—C12 | 135.2 (2) | C8—C9—H9C | 109.00 |
C11—C10—C12 | 120.0 (2) | H9A—C9—H9B | 110.00 |
C8—C10—C11 | 104.8 (2) | H9A—C9—H9C | 110.00 |
O1—C11—C10 | 127.3 (2) | H9B—C9—H9C | 109.00 |
N1—C11—C10 | 105.93 (19) | C12—C13—H13 | 118.00 |
O1—C11—N1 | 126.7 (2) | C14—C13—H13 | 118.00 |
O2—C12—C13 | 115.6 (2) | C13—C14—H14 | 116.00 |
C10—C12—C13 | 125.7 (2) | C15—C14—H14 | 116.00 |
O2—C12—C10 | 118.8 (2) | C15—C16—H16 | 120.00 |
C12—C13—C14 | 123.6 (2) | C17—C16—H16 | 120.00 |
C13—C14—C15 | 127.9 (2) | C17—C18—H18 | 121.00 |
C14—C15—C20 | 122.5 (2) | C19—C18—H18 | 121.00 |
C16—C15—C20 | 117.6 (2) | C18—C19—H19 | 120.00 |
C14—C15—C16 | 119.9 (2) | C20—C19—H19 | 120.00 |
C15—C16—C17 | 119.7 (2) | C15—C20—H20 | 119.00 |
N3—C17—C18 | 118.9 (2) | C19—C20—H20 | 119.00 |
C1—N1—N2—C8 | 178.4 (2) | N2—C8—C10—C12 | 177.5 (3) |
C11—N1—N2—C8 | 0.1 (3) | C9—C8—C10—C11 | 178.0 (3) |
N2—N1—C1—C2 | −3.6 (4) | C9—C8—C10—C12 | −2.8 (5) |
N2—N1—C1—C6 | 176.3 (2) | C8—C10—C11—O1 | −178.1 (3) |
C11—N1—C1—C2 | 174.2 (3) | C8—C10—C11—N1 | 1.7 (3) |
C11—N1—C1—C6 | −5.8 (4) | C12—C10—C11—O1 | 2.6 (4) |
N2—N1—C11—O1 | 178.6 (3) | C12—C10—C11—N1 | −177.7 (2) |
N2—N1—C11—C10 | −1.2 (3) | C8—C10—C12—O2 | 179.6 (3) |
C1—N1—C11—O1 | 0.6 (5) | C8—C10—C12—C13 | −1.2 (5) |
C1—N1—C11—C10 | −179.1 (3) | C11—C10—C12—O2 | −1.3 (4) |
N1—N2—C8—C9 | −178.7 (2) | C11—C10—C12—C13 | 177.9 (3) |
N1—N2—C8—C10 | 1.0 (3) | O2—C12—C13—C14 | 2.3 (4) |
O3—N3—C17—C16 | 14.1 (4) | C10—C12—C13—C14 | −177.0 (3) |
O3—N3—C17—C18 | −165.3 (2) | C12—C13—C14—C15 | −177.9 (3) |
O4—N3—C17—C16 | −166.5 (2) | C13—C14—C15—C16 | −173.4 (3) |
O4—N3—C17—C18 | 14.1 (4) | C13—C14—C15—C20 | 7.5 (5) |
N1—C1—C2—C3 | 179.2 (2) | C14—C15—C16—C17 | −178.9 (2) |
C6—C1—C2—C3 | −0.8 (4) | C20—C15—C16—C17 | 0.2 (4) |
N1—C1—C6—C5 | −179.4 (3) | C14—C15—C20—C19 | 178.6 (3) |
C2—C1—C6—C5 | 0.6 (4) | C16—C15—C20—C19 | −0.5 (4) |
C1—C2—C3—C4 | 0.6 (4) | C15—C16—C17—N3 | −179.2 (2) |
C2—C3—C4—C5 | −0.1 (4) | C15—C16—C17—C18 | 0.1 (4) |
C2—C3—C4—C7 | −179.4 (3) | N3—C17—C18—C19 | 179.2 (2) |
C3—C4—C5—C6 | −0.2 (4) | C16—C17—C18—C19 | −0.1 (4) |
C7—C4—C5—C6 | 179.2 (3) | C17—C18—C19—C20 | −0.2 (4) |
C4—C5—C6—C1 | −0.1 (4) | C18—C19—C20—C15 | 0.5 (4) |
N2—C8—C10—C11 | −1.7 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···O1 | 0.82 | 1.82 | 2.571 (3) | 152 |
C6—H6···O1 | 0.93 | 2.33 | 2.958 (3) | 125 |
C18—H18···O4i | 0.93 | 2.57 | 3.496 (3) | 171 |
C20—H20···O3ii | 0.93 | 2.43 | 3.172 (3) | 136 |
Symmetry codes: (i) −x+1, −y, −z+2; (ii) −x+1/2, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C20H17N3O4 |
Mr | 363.37 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 296 |
a, b, c (Å) | 19.8712 (16), 12.1917 (10), 16.733 (2) |
β (°) | 121.188 (4) |
V (Å3) | 3467.9 (6) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.35 × 0.18 × 0.17 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.972, 0.983 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12231, 3328, 1823 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.052, 0.143, 1.02 |
No. of reflections | 3328 |
No. of parameters | 247 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.16, −0.22 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···O1 | 0.82 | 1.82 | 2.571 (3) | 152 |
C6—H6···O1 | 0.93 | 2.33 | 2.958 (3) | 125 |
C18—H18···O4i | 0.93 | 2.57 | 3.496 (3) | 171 |
C20—H20···O3ii | 0.93 | 2.43 | 3.172 (3) | 136 |
Symmetry codes: (i) −x+1, −y, −z+2; (ii) −x+1/2, y−1/2, −z+3/2. |
Acknowledgements
The authors acknowledge the provision of funds for the purchase of a diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha, Pakistan.
References
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Bruker (2009). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
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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.
We have reported the synthesis and crystal structure of (II) i.e., Ethyl 2-benzamido-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate (Mukhtar et al., 2010). The title compound (I, Fig. 1) is being reported here in continuation to synthesize various thiophene derivatives.
The crystal structure of 3-nitrocinnamic acid (Udaya Lakshmi et al., 2005) and 5-methyl-4-(phenyl(phenylamino)methylene)-2-p-tolyl-2,4-dihydropyrazol-3-one (Jadeja & Shah, 2007) have been published which contain the fragments of the title compound.
In (I), the toluene group A (C1—C7) and the part of 5-methyl-2,4-dihydro- 3H-pyrazol-3-one B (C8—C11/N1/N2/O1) are planar with r.m.s. deviation of 0.0052 and 0.0171 Å, respectively. The dihedral angle between A/B is 4.42 (10)°. The part of 3-nitrocinnamic acid C (C12—C20/N3/O2/O3/O4) has r. m. s. deviation of 0.1229 Å from the plane in which O3 atom deviate to 0.2632 (17) Å. The dihedral angle between A/C abd B/C is 7.93 (6) and 12.26 (7)°, respectively. In the title compound two S(6) ring motifs are formed due to intramolecular H-bondings of C—H···O and O—H···O types (Table 1, Fig. 1). The molecules are dimerized from nitrobenzene due to C—H···O type of H-bondings and form R22(10) ring motifs (Table 1, Fig. 2). The dimers are again interlinked from nitrobenzene due to C—H···O type of H-bondings. There exist π···π interaction between Cg1···Cg1i [i = - x, y, 1/2 - z] at a distance of 3.7126 (10) Å, where Cg1 is the centroid of heterocyclic five membered ring (N1/N2/C8/C10/C11). Similarly, there also exist π···π interaction between Cg2···Cg3ii [ii = - x, - y, 1 - z] and Cg3···Cg2ii at a distance of 3.8710 (16) Å, where Cg2 and Cg3 are the centroids of benzene rings (C1—C6) and (C15—C20).