organic compounds
Z)-1-(3,4-dichlorophenyl)-4-[hydroxy(4-methylphenyl)methylidene]-3-methyl-4,5-dihydro-1H-pyrazol-5-one
of (4aPost-Graduate Department of Physics & Electronics, University of Jammu, Jammu Tawi 180 006, India, and bDepartment of Chemistry, Faculty of Science, The M.S. University of Baroda, Vadodara 390 002, India
*Correspondence e-mail: vivek_gupta2k2@hotmail.com
The title compound, C18H14Cl2N2O2, crystallizes with two molecules, A and B, in the In molecule A, the dihedral angles between the central pyrazole ring and pendant dichlorobenzene and p-tolyl rings are 2.18 (16) and 46.78 (16)°, respectively. In molecule B, the equivalent angles are 27.45 (16) and 40.45 (18)°, respectively. Each molecule features an intramolecular O—H⋯O hydrogen bond, which closes an S(6) ring and molecule A also features a C—H⋯O interaction. In the crystal, weak C—H⋯π interactions and aromatic π–π stacking [shortest centroid–centroid separation = 3.707 (2) Å] generate a three-dimensional network.
Keywords: crystal structure; Schiff-base pyrazole derivative; hydrogen bonding; C—H⋯π interactions; aromatic π–π stacking.
CCDC reference: 1025562
1. Related literature
For background to Schiff-base pyrazole derivatives, see: Jadeja et al. (2012). For a related structure, see: Abdel-Aziz et al. (2012).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: CrysAlis PRO (Oxford Diffraction, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; 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, 2012); software used to prepare material for publication: PLATON (Spek, 2009).
Supporting information
CCDC reference: 1025562
10.1107/S160053681402114X/hb7270sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053681402114X/hb7270Isup2.hkl
Supporting information file. DOI: 10.1107/S160053681402114X/hb7270Isup3.cml
1-(3,4-dichlorophenyl)-3-methyl-5-pyrazolone (24.2 g, 0.1 mol) and 80 ml of dry 1,4-dioxane were placed in a three necked 250 ml round bottom flask equipped with a stirrer, an addition funnel and a reflux condenser. The reaction mass was heated at 70 °C for 10 min. To the resulting yellow solution was added in small portions calcium hydroxide (14.82 g, 0.2 mol) and then toluoyl chloride (15.5 g, 0.1 mol) was added dropwise. During this addition, the whole mass was converted into a thick paste. After the complete addition, the reaction mixture was heated to reflux for 2 h. The yellowish mixture was cooled to room temperature and poured into a 250 ml solution of ice-cold hydrochloric acid (2 M) under stirring. The yellow precipitate was filtered, washed with water and dried in a vacuum. After drying a pale-yellow solid was obtained and recrystallized from an acetone-water mixture. (Yield 21.6 g m, 60%). Yellow blocks were obtained by the slow evaporation of the compound in acetone-water mixture (3–4 days).
(4Z)-1-(3,4,-dichlorophenyl)-4-(hydroxy(p-tolyl)methylene)-3-methyl-1H-pyrazol-5(4H)-one. 1H NMR (400 MHz, CDCl3, TMS): δ 2.15 (s, 3H), 2.48 (s, 3H), 7.34–7.36 (d, J = 8 Hz, 2H), 7.52–7.54 (d, J = 8.8 Hz, 1H), 7.57–7.59 (d, J = 8 Hz, 2H), 7.86–7.89 (dd, J = 2.4 Hz, 1H), 8.13–8.14 (d, J = 2.4 Hz, 1H). 13C NMR (CDCl3): δ 189.23, 163.56, 148.38, 143.19, 136.83, 133.24, 133.05, 130.66, 129.60, 129.18, 128.40, 121.54, 118.92, 103.86, 21.73, 16.20. ESI-MS: m/z 360.28 (calcd: m/z 360.04).
All the H atoms were geometrically fixed and allowed to ride on their parent Carbon atoms, with C—H distances of 0.93–0.96 Å; and with Uiso(H) = 1.2Ueq(C), except for the methyl groups where Uiso(H) = 1.5Ueq(C),.
Data collection: CrysAlis PRO (Oxford Diffraction, 2010); cell
CrysAlis PRO (Oxford Diffraction, 2010); data reduction: CrysAlis PRO (Oxford Diffraction, 2010); 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, 2012); software used to prepare material for publication: PLATON (Spek, 2009).Fig. 1. ORTEP view of the molecule with ellipsoids drawn at the 40% probability level. H atoms are shown as small spheres of arbitrary radii. | |
Fig. 2. The packing arrangement of molecules viewed down the a axis. |
C18H14Cl2N2O2 | Z = 4 |
Mr = 361.21 | F(000) = 744 |
Triclinic, P1 | Dx = 1.440 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.5041 (5) Å | Cell parameters from 2794 reflections |
b = 15.4848 (9) Å | θ = 3.7–29.1° |
c = 15.5589 (10) Å | µ = 0.40 mm−1 |
α = 71.963 (5)° | T = 293 K |
β = 80.731 (5)° | Block, yellow |
γ = 76.832 (5)° | 0.30 × 0.20 × 0.20 mm |
V = 1665.87 (18) Å3 |
Oxford Diffraction Xcalibur, Sapphire3 diffractometer | 6536 independent reflections |
Radiation source: fine-focus sealed tube | 3600 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.037 |
Detector resolution: 16.1049 pixels mm-1 | θmax = 26.0°, θmin = 3.5° |
ω scans | h = −9→9 |
Absorption correction: multi-scan (Crys Alis RED; Agilent, 2013) | k = −19→18 |
Tmin = 0.960, Tmax = 1.000 | l = −18→19 |
12468 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)] = 0.054 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.140 | H-atom parameters constrained |
S = 0.99 | w = 1/[σ2(Fo2) + (0.0477P)2] where P = (Fo2 + 2Fc2)/3 |
6536 reflections | (Δ/σ)max = 0.001 |
437 parameters | Δρmax = 0.24 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
C18H14Cl2N2O2 | γ = 76.832 (5)° |
Mr = 361.21 | V = 1665.87 (18) Å3 |
Triclinic, P1 | Z = 4 |
a = 7.5041 (5) Å | Mo Kα radiation |
b = 15.4848 (9) Å | µ = 0.40 mm−1 |
c = 15.5589 (10) Å | T = 293 K |
α = 71.963 (5)° | 0.30 × 0.20 × 0.20 mm |
β = 80.731 (5)° |
Oxford Diffraction Xcalibur, Sapphire3 diffractometer | 6536 independent reflections |
Absorption correction: multi-scan (Crys Alis RED; Agilent, 2013) | 3600 reflections with I > 2σ(I) |
Tmin = 0.960, Tmax = 1.000 | Rint = 0.037 |
12468 measured reflections |
R[F2 > 2σ(F2)] = 0.054 | 0 restraints |
wR(F2) = 0.140 | H-atom parameters constrained |
S = 0.99 | Δρmax = 0.24 e Å−3 |
6536 reflections | Δρmin = −0.24 e Å−3 |
437 parameters |
Experimental. Empirical absorption correction using spherical harmonics, implemented in SCALE3 ABSPACK scaling algorithm. |
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 | ||
Cl1A | 0.89083 (13) | −0.27477 (5) | 1.06691 (6) | 0.0731 (3) | |
Cl2A | 0.68767 (12) | −0.25570 (6) | 1.25713 (6) | 0.0726 (3) | |
O1A | 0.8979 (3) | 0.02319 (13) | 0.82650 (14) | 0.0605 (6) | |
O2A | 0.9047 (3) | 0.15508 (14) | 0.68000 (15) | 0.0741 (7) | |
H2A | 0.9209 | 0.1037 | 0.7168 | 0.089* | |
N1A | 0.7441 (3) | 0.07818 (15) | 0.94796 (15) | 0.0449 (6) | |
N2A | 0.6588 (3) | 0.16407 (16) | 0.96221 (16) | 0.0519 (7) | |
C1A | 0.6813 (4) | 0.22663 (19) | 0.8851 (2) | 0.0467 (7) | |
C2A | 0.7840 (4) | 0.18608 (18) | 0.81593 (18) | 0.0424 (7) | |
C3A | 0.8170 (4) | 0.0901 (2) | 0.86035 (19) | 0.0459 (7) | |
C4A | 0.7337 (4) | −0.00290 (19) | 1.02012 (18) | 0.0427 (7) | |
C5A | 0.8104 (4) | −0.08961 (19) | 1.0096 (2) | 0.0495 (8) | |
H5A | 0.8714 | −0.0957 | 0.9542 | 0.059* | |
C6A | 0.7955 (4) | −0.1670 (2) | 1.0822 (2) | 0.0488 (7) | |
C7A | 0.7061 (4) | −0.1591 (2) | 1.1653 (2) | 0.0504 (8) | |
C8A | 0.6305 (4) | −0.0722 (2) | 1.1750 (2) | 0.0592 (9) | |
H8A | 0.5712 | −0.0661 | 1.2306 | 0.071* | |
C9A | 0.6420 (4) | 0.0049 (2) | 1.1036 (2) | 0.0577 (9) | |
H9A | 0.5885 | 0.0630 | 1.1107 | 0.069* | |
C10A | 0.8334 (4) | 0.21605 (19) | 0.7220 (2) | 0.0488 (8) | |
C11A | 0.8110 (4) | 0.31213 (19) | 0.6644 (2) | 0.0467 (7) | |
C12A | 0.7578 (4) | 0.3345 (2) | 0.5781 (2) | 0.0584 (8) | |
H12A | 0.7369 | 0.2883 | 0.5566 | 0.070* | |
C13A | 0.7353 (4) | 0.4249 (2) | 0.5231 (2) | 0.0682 (10) | |
H13A | 0.6979 | 0.4385 | 0.4654 | 0.082* | |
C14A | 0.7670 (4) | 0.4950 (2) | 0.5517 (3) | 0.0630 (10) | |
C15A | 0.8276 (4) | 0.4717 (2) | 0.6364 (3) | 0.0655 (10) | |
H15A | 0.8550 | 0.5175 | 0.6563 | 0.079* | |
C16A | 0.8487 (4) | 0.3822 (2) | 0.6926 (2) | 0.0554 (8) | |
H16A | 0.8885 | 0.3688 | 0.7497 | 0.067* | |
C17A | 0.5964 (4) | 0.32540 (19) | 0.8800 (2) | 0.0639 (9) | |
H17A | 0.5084 | 0.3276 | 0.9318 | 0.096* | |
H17B | 0.5357 | 0.3534 | 0.8255 | 0.096* | |
H17C | 0.6906 | 0.3584 | 0.8795 | 0.096* | |
C18A | 0.7404 (5) | 0.5937 (2) | 0.4933 (3) | 0.0929 (14) | |
H18A | 0.7145 | 0.5964 | 0.4340 | 0.139* | |
H18B | 0.8504 | 0.6175 | 0.4883 | 0.139* | |
H18C | 0.6395 | 0.6303 | 0.5204 | 0.139* | |
Cl1B | 0.58908 (15) | 1.43659 (6) | 1.26432 (7) | 0.0935 (4) | |
Cl2B | 0.70112 (15) | 1.41790 (7) | 1.06541 (6) | 0.0910 (4) | |
O1B | 0.7689 (3) | 1.13708 (13) | 1.50039 (13) | 0.0584 (6) | |
O2B | 0.7819 (3) | 1.00850 (15) | 1.64772 (15) | 0.0779 (7) | |
H2B | 0.7686 | 1.0600 | 1.6109 | 0.094* | |
N1B | 0.7256 (3) | 1.08466 (15) | 1.38073 (16) | 0.0459 (6) | |
N2B | 0.7082 (3) | 1.00174 (16) | 1.36756 (16) | 0.0515 (6) | |
C1B | 0.7252 (4) | 0.93871 (19) | 1.4462 (2) | 0.0452 (7) | |
C2B | 0.7553 (4) | 0.97807 (19) | 1.51388 (19) | 0.0438 (7) | |
C3B | 0.7515 (4) | 1.0732 (2) | 1.4681 (2) | 0.0474 (7) | |
C4B | 0.7189 (4) | 1.16495 (19) | 1.30626 (19) | 0.0449 (7) | |
C5B | 0.6616 (4) | 1.2518 (2) | 1.3190 (2) | 0.0516 (8) | |
H5 | 0.6264 | 1.2581 | 1.3772 | 0.062* | |
C6B | 0.6568 (4) | 1.3294 (2) | 1.2447 (2) | 0.0536 (8) | |
C7B | 0.7088 (4) | 1.3211 (2) | 1.1586 (2) | 0.0555 (8) | |
C8B | 0.7640 (4) | 1.2346 (2) | 1.1462 (2) | 0.0617 (9) | |
H10 | 0.7956 | 1.2287 | 1.0877 | 0.074* | |
C9B | 0.7734 (4) | 1.1561 (2) | 1.2196 (2) | 0.0542 (8) | |
H9 | 0.8160 | 1.0978 | 1.2108 | 0.065* | |
C10B | 0.7744 (4) | 0.9470 (2) | 1.6079 (2) | 0.0510 (8) | |
C11B | 0.7885 (4) | 0.8533 (2) | 1.6683 (2) | 0.0541 (8) | |
C12B | 0.7131 (5) | 0.8402 (3) | 1.7580 (2) | 0.0748 (11) | |
H12 | 0.6513 | 0.8908 | 1.7780 | 0.090* | |
C13B | 0.7296 (6) | 0.7528 (4) | 1.8172 (3) | 0.0990 (15) | |
H13 | 0.6764 | 0.7452 | 1.8767 | 0.119* | |
C14B | 0.8236 (6) | 0.6752 (3) | 1.7909 (3) | 0.0913 (14) | |
C15B | 0.9010 (5) | 0.6895 (2) | 1.7034 (3) | 0.0800 (11) | |
H14 | 0.9673 | 0.6389 | 1.6845 | 0.096* | |
C16B | 0.8847 (4) | 0.7768 (2) | 1.6414 (2) | 0.0616 (9) | |
H16 | 0.9382 | 0.7839 | 1.5820 | 0.074* | |
C17B | 0.7036 (4) | 0.8437 (2) | 1.4534 (2) | 0.0627 (9) | |
H17D | 0.6329 | 0.8459 | 1.4063 | 0.094* | |
H17E | 0.6412 | 0.8180 | 1.5116 | 0.094* | |
H17F | 0.8226 | 0.8057 | 1.4470 | 0.094* | |
C18B | 0.8393 (7) | 0.5792 (3) | 1.8572 (3) | 0.144 (2) | |
H18D | 0.7376 | 0.5526 | 1.8542 | 0.215* | |
H18E | 0.8379 | 0.5832 | 1.9176 | 0.215* | |
H18F | 0.9524 | 0.5411 | 1.8416 | 0.215* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1A | 0.0999 (7) | 0.0443 (5) | 0.0620 (6) | −0.0064 (5) | −0.0022 (5) | −0.0046 (4) |
Cl2A | 0.0981 (6) | 0.0631 (6) | 0.0445 (5) | −0.0181 (5) | −0.0130 (4) | 0.0070 (4) |
O1A | 0.0903 (15) | 0.0338 (11) | 0.0459 (13) | 0.0011 (11) | 0.0034 (11) | −0.0090 (10) |
O2A | 0.1251 (19) | 0.0370 (12) | 0.0475 (14) | −0.0068 (13) | 0.0107 (13) | −0.0094 (11) |
N1A | 0.0555 (15) | 0.0400 (14) | 0.0373 (14) | −0.0056 (12) | −0.0058 (11) | −0.0102 (11) |
N2A | 0.0716 (17) | 0.0387 (14) | 0.0406 (15) | −0.0061 (13) | −0.0007 (13) | −0.0102 (12) |
C1A | 0.0531 (18) | 0.0405 (17) | 0.0485 (19) | −0.0086 (15) | −0.0073 (15) | −0.0145 (15) |
C2A | 0.0536 (17) | 0.0358 (16) | 0.0349 (16) | −0.0070 (14) | −0.0029 (13) | −0.0078 (13) |
C3A | 0.0533 (18) | 0.0461 (18) | 0.0360 (17) | −0.0118 (15) | −0.0029 (14) | −0.0076 (14) |
C4A | 0.0488 (17) | 0.0422 (17) | 0.0365 (17) | −0.0114 (14) | −0.0111 (13) | −0.0050 (13) |
C5A | 0.0574 (18) | 0.0464 (18) | 0.0414 (18) | −0.0074 (16) | −0.0077 (14) | −0.0079 (14) |
C6A | 0.0577 (18) | 0.0435 (18) | 0.0432 (18) | −0.0092 (15) | −0.0134 (14) | −0.0053 (14) |
C7A | 0.0570 (18) | 0.0519 (19) | 0.0370 (17) | −0.0121 (16) | −0.0153 (14) | 0.0016 (15) |
C8A | 0.076 (2) | 0.061 (2) | 0.0369 (18) | −0.0109 (19) | −0.0061 (16) | −0.0097 (16) |
C9A | 0.076 (2) | 0.054 (2) | 0.0407 (19) | −0.0084 (17) | −0.0046 (16) | −0.0133 (16) |
C10A | 0.0589 (19) | 0.0361 (16) | 0.051 (2) | −0.0102 (15) | −0.0017 (15) | −0.0122 (15) |
C11A | 0.0514 (17) | 0.0382 (17) | 0.0452 (19) | −0.0081 (15) | −0.0002 (14) | −0.0069 (14) |
C12A | 0.077 (2) | 0.052 (2) | 0.045 (2) | −0.0161 (18) | −0.0095 (16) | −0.0071 (16) |
C13A | 0.072 (2) | 0.068 (2) | 0.052 (2) | −0.009 (2) | −0.0135 (17) | 0.0013 (19) |
C14A | 0.058 (2) | 0.049 (2) | 0.064 (2) | −0.0074 (18) | 0.0035 (18) | 0.0030 (18) |
C15A | 0.076 (2) | 0.043 (2) | 0.077 (3) | −0.0179 (18) | 0.002 (2) | −0.0169 (19) |
C16A | 0.069 (2) | 0.0438 (19) | 0.052 (2) | −0.0117 (17) | −0.0023 (16) | −0.0122 (16) |
C17A | 0.083 (2) | 0.0429 (19) | 0.059 (2) | −0.0045 (17) | 0.0046 (18) | −0.0156 (16) |
C18A | 0.086 (3) | 0.049 (2) | 0.106 (3) | −0.004 (2) | 0.001 (2) | 0.019 (2) |
Cl1B | 0.1408 (9) | 0.0441 (5) | 0.0768 (7) | 0.0147 (6) | −0.0136 (6) | −0.0120 (5) |
Cl2B | 0.1345 (8) | 0.0651 (6) | 0.0552 (6) | −0.0192 (6) | −0.0157 (6) | 0.0122 (5) |
O1B | 0.0902 (15) | 0.0445 (12) | 0.0431 (13) | −0.0151 (11) | −0.0100 (11) | −0.0129 (10) |
O2B | 0.138 (2) | 0.0606 (15) | 0.0433 (14) | −0.0348 (15) | −0.0194 (14) | −0.0088 (12) |
N1B | 0.0605 (15) | 0.0384 (14) | 0.0374 (14) | −0.0066 (12) | −0.0060 (12) | −0.0101 (11) |
N2B | 0.0731 (17) | 0.0385 (14) | 0.0419 (15) | −0.0113 (13) | −0.0053 (13) | −0.0096 (12) |
C1B | 0.0510 (17) | 0.0402 (17) | 0.0408 (17) | −0.0068 (15) | 0.0016 (14) | −0.0107 (14) |
C2B | 0.0504 (17) | 0.0415 (17) | 0.0355 (16) | −0.0078 (15) | 0.0003 (13) | −0.0083 (13) |
C3B | 0.0527 (18) | 0.0504 (19) | 0.0377 (17) | −0.0095 (15) | 0.0017 (14) | −0.0138 (15) |
C4B | 0.0461 (17) | 0.0417 (17) | 0.0402 (17) | −0.0022 (14) | −0.0052 (13) | −0.0060 (14) |
C5B | 0.0570 (19) | 0.0499 (19) | 0.0430 (18) | 0.0006 (16) | −0.0048 (15) | −0.0137 (15) |
C6B | 0.0615 (19) | 0.0392 (17) | 0.050 (2) | 0.0006 (15) | −0.0088 (15) | −0.0037 (15) |
C7B | 0.0605 (19) | 0.051 (2) | 0.0445 (19) | −0.0074 (17) | −0.0087 (15) | 0.0007 (15) |
C8B | 0.078 (2) | 0.063 (2) | 0.0393 (19) | −0.0122 (19) | −0.0016 (16) | −0.0108 (17) |
C9B | 0.067 (2) | 0.0478 (19) | 0.0428 (19) | −0.0044 (16) | 0.0006 (15) | −0.0137 (15) |
C10B | 0.0570 (18) | 0.0500 (19) | 0.0467 (19) | −0.0141 (16) | −0.0069 (15) | −0.0109 (15) |
C11B | 0.0544 (19) | 0.057 (2) | 0.047 (2) | −0.0188 (17) | −0.0099 (15) | −0.0006 (16) |
C12B | 0.080 (2) | 0.093 (3) | 0.044 (2) | −0.030 (2) | −0.0035 (18) | 0.000 (2) |
C13B | 0.101 (3) | 0.137 (4) | 0.048 (2) | −0.061 (3) | −0.018 (2) | 0.023 (3) |
C14B | 0.091 (3) | 0.086 (3) | 0.084 (3) | −0.048 (3) | −0.045 (3) | 0.036 (3) |
C15B | 0.083 (3) | 0.057 (2) | 0.097 (3) | −0.024 (2) | −0.034 (2) | 0.003 (2) |
C16B | 0.066 (2) | 0.056 (2) | 0.058 (2) | −0.0232 (18) | −0.0149 (17) | 0.0033 (17) |
C17B | 0.091 (2) | 0.0499 (19) | 0.053 (2) | −0.0216 (18) | −0.0073 (18) | −0.0156 (16) |
C18B | 0.155 (4) | 0.109 (4) | 0.138 (5) | −0.076 (3) | −0.073 (4) | 0.072 (3) |
Cl1A—C6A | 1.733 (3) | Cl1B—C6B | 1.728 (3) |
Cl2A—C7A | 1.733 (3) | Cl2B—C7B | 1.730 (3) |
O1A—C3A | 1.291 (3) | O1B—C3B | 1.279 (3) |
O2A—C10A | 1.282 (3) | O2B—C10B | 1.302 (3) |
O2A—H2A | 0.8200 | O2B—H2B | 0.8200 |
N1A—C3A | 1.357 (3) | N1B—C3B | 1.356 (4) |
N1A—N2A | 1.406 (3) | N1B—N2B | 1.398 (3) |
N1A—C4A | 1.409 (3) | N1B—C4B | 1.410 (3) |
N2A—C1A | 1.302 (3) | N2B—C1B | 1.311 (3) |
C1A—C2A | 1.441 (4) | C1B—C2B | 1.439 (4) |
C1A—C17A | 1.500 (4) | C1B—C17B | 1.485 (4) |
C2A—C10A | 1.405 (4) | C2B—C10B | 1.411 (4) |
C2A—C3A | 1.415 (4) | C2B—C3B | 1.420 (4) |
C4A—C5A | 1.384 (4) | C4B—C5B | 1.381 (4) |
C4A—C9A | 1.395 (4) | C4B—C9B | 1.384 (4) |
C5A—C6A | 1.380 (4) | C5B—C6B | 1.383 (4) |
C5A—H5A | 0.9300 | C5B—H5 | 0.9300 |
C6A—C7A | 1.385 (4) | C6B—C7B | 1.371 (4) |
C7A—C8A | 1.380 (4) | C7B—C8B | 1.373 (4) |
C8A—C9A | 1.364 (4) | C8B—C9B | 1.384 (4) |
C8A—H8A | 0.9300 | C8B—H10 | 0.9300 |
C9A—H9A | 0.9300 | C9B—H9 | 0.9300 |
C10A—C11A | 1.468 (4) | C10B—C11B | 1.455 (4) |
C11A—C12A | 1.380 (4) | C11B—C16B | 1.386 (4) |
C11A—C16A | 1.388 (4) | C11B—C12B | 1.390 (4) |
C12A—C13A | 1.385 (4) | C12B—C13B | 1.373 (5) |
C12A—H12A | 0.9300 | C12B—H12 | 0.9300 |
C13A—C14A | 1.372 (5) | C13B—C14B | 1.390 (5) |
C13A—H13A | 0.9300 | C13B—H13 | 0.9300 |
C14A—C15A | 1.378 (5) | C14B—C15B | 1.363 (6) |
C14A—C18A | 1.504 (4) | C14B—C18B | 1.516 (5) |
C15A—C16A | 1.379 (4) | C15B—C16B | 1.389 (4) |
C15A—H15A | 0.9300 | C15B—H14 | 0.9300 |
C16A—H16A | 0.9300 | C16B—H16 | 0.9300 |
C17A—H17A | 0.9600 | C17B—H17D | 0.9600 |
C17A—H17B | 0.9600 | C17B—H17E | 0.9600 |
C17A—H17C | 0.9600 | C17B—H17F | 0.9600 |
C18A—H18A | 0.9600 | C18B—H18D | 0.9600 |
C18A—H18B | 0.9600 | C18B—H18E | 0.9600 |
C18A—H18C | 0.9600 | C18B—H18F | 0.9600 |
C10A—O2A—H2A | 109.5 | C10B—O2B—H2B | 109.5 |
C3A—N1A—N2A | 110.2 (2) | C3B—N1B—N2B | 111.4 (2) |
C3A—N1A—C4A | 131.0 (2) | C3B—N1B—C4B | 129.2 (2) |
N2A—N1A—C4A | 118.8 (2) | N2B—N1B—C4B | 119.4 (2) |
C1A—N2A—N1A | 106.7 (2) | C1B—N2B—N1B | 106.6 (2) |
N2A—C1A—C2A | 111.6 (2) | N2B—C1B—C2B | 110.8 (3) |
N2A—C1A—C17A | 118.0 (2) | N2B—C1B—C17B | 118.4 (3) |
C2A—C1A—C17A | 130.4 (3) | C2B—C1B—C17B | 130.8 (3) |
C10A—C2A—C3A | 118.7 (2) | C10B—C2B—C3B | 118.4 (3) |
C10A—C2A—C1A | 137.0 (3) | C10B—C2B—C1B | 136.5 (3) |
C3A—C2A—C1A | 103.8 (2) | C3B—C2B—C1B | 105.0 (3) |
O1A—C3A—N1A | 124.1 (3) | O1B—C3B—N1B | 125.4 (3) |
O1A—C3A—C2A | 128.2 (3) | O1B—C3B—C2B | 128.3 (3) |
N1A—C3A—C2A | 107.6 (2) | N1B—C3B—C2B | 106.2 (3) |
C5A—C4A—C9A | 119.5 (3) | C5B—C4B—C9B | 119.9 (3) |
C5A—C4A—N1A | 121.5 (2) | C5B—C4B—N1B | 120.9 (2) |
C9A—C4A—N1A | 118.9 (2) | C9B—C4B—N1B | 119.2 (2) |
C6A—C5A—C4A | 119.3 (3) | C4B—C5B—C6B | 119.6 (3) |
C6A—C5A—H5A | 120.3 | C4B—C5B—H5 | 120.2 |
C4A—C5A—H5A | 120.3 | C6B—C5B—H5 | 120.2 |
C5A—C6A—C7A | 121.1 (3) | C7B—C6B—C5B | 120.8 (3) |
C5A—C6A—Cl1A | 118.4 (2) | C7B—C6B—Cl1B | 121.2 (2) |
C7A—C6A—Cl1A | 120.5 (2) | C5B—C6B—Cl1B | 117.9 (2) |
C8A—C7A—C6A | 119.0 (3) | C6B—C7B—C8B | 119.4 (3) |
C8A—C7A—Cl2A | 119.5 (2) | C6B—C7B—Cl2B | 121.0 (2) |
C6A—C7A—Cl2A | 121.5 (2) | C8B—C7B—Cl2B | 119.7 (2) |
C9A—C8A—C7A | 120.7 (3) | C7B—C8B—C9B | 120.8 (3) |
C9A—C8A—H8A | 119.7 | C7B—C8B—H10 | 119.6 |
C7A—C8A—H8A | 119.7 | C9B—C8B—H10 | 119.6 |
C8A—C9A—C4A | 120.4 (3) | C4B—C9B—C8B | 119.4 (3) |
C8A—C9A—H9A | 119.8 | C4B—C9B—H9 | 120.3 |
C4A—C9A—H9A | 119.8 | C8B—C9B—H9 | 120.3 |
O2A—C10A—C2A | 118.5 (3) | O2B—C10B—C2B | 117.5 (3) |
O2A—C10A—C11A | 114.8 (3) | O2B—C10B—C11B | 114.0 (3) |
C2A—C10A—C11A | 126.6 (3) | C2B—C10B—C11B | 128.5 (3) |
C12A—C11A—C16A | 117.9 (3) | C16B—C11B—C12B | 118.5 (3) |
C12A—C11A—C10A | 120.1 (3) | C16B—C11B—C10B | 122.4 (3) |
C16A—C11A—C10A | 121.9 (3) | C12B—C11B—C10B | 119.0 (3) |
C11A—C12A—C13A | 120.8 (3) | C13B—C12B—C11B | 120.2 (4) |
C11A—C12A—H12A | 119.6 | C13B—C12B—H12 | 119.9 |
C13A—C12A—H12A | 119.6 | C11B—C12B—H12 | 119.9 |
C14A—C13A—C12A | 121.5 (3) | C12B—C13B—C14B | 122.0 (4) |
C14A—C13A—H13A | 119.3 | C12B—C13B—H13 | 119.0 |
C12A—C13A—H13A | 119.3 | C14B—C13B—H13 | 119.0 |
C13A—C14A—C15A | 117.5 (3) | C15B—C14B—C13B | 117.1 (4) |
C13A—C14A—C18A | 122.1 (4) | C15B—C14B—C18B | 121.8 (5) |
C15A—C14A—C18A | 120.4 (4) | C13B—C14B—C18B | 121.1 (5) |
C14A—C15A—C16A | 121.8 (3) | C14B—C15B—C16B | 122.4 (4) |
C14A—C15A—H15A | 119.1 | C14B—C15B—H14 | 118.8 |
C16A—C15A—H15A | 119.1 | C16B—C15B—H14 | 118.8 |
C15A—C16A—C11A | 120.4 (3) | C11B—C16B—C15B | 119.8 (3) |
C15A—C16A—H16A | 119.8 | C11B—C16B—H16 | 120.1 |
C11A—C16A—H16A | 119.8 | C15B—C16B—H16 | 120.1 |
C1A—C17A—H17A | 109.5 | C1B—C17B—H17D | 109.5 |
C1A—C17A—H17B | 109.5 | C1B—C17B—H17E | 109.5 |
H17A—C17A—H17B | 109.5 | H17D—C17B—H17E | 109.5 |
C1A—C17A—H17C | 109.5 | C1B—C17B—H17F | 109.5 |
H17A—C17A—H17C | 109.5 | H17D—C17B—H17F | 109.5 |
H17B—C17A—H17C | 109.5 | H17E—C17B—H17F | 109.5 |
C14A—C18A—H18A | 109.5 | C14B—C18B—H18D | 109.5 |
C14A—C18A—H18B | 109.5 | C14B—C18B—H18E | 109.5 |
H18A—C18A—H18B | 109.5 | H18D—C18B—H18E | 109.5 |
C14A—C18A—H18C | 109.5 | C14B—C18B—H18F | 109.5 |
H18A—C18A—H18C | 109.5 | H18D—C18B—H18F | 109.5 |
H18B—C18A—H18C | 109.5 | H18E—C18B—H18F | 109.5 |
C3A—N1A—N2A—C1A | −0.6 (3) | C3B—N1B—N2B—C1B | −0.6 (3) |
C4A—N1A—N2A—C1A | −177.3 (2) | C4B—N1B—N2B—C1B | 178.0 (2) |
N1A—N2A—C1A—C2A | −0.7 (3) | N1B—N2B—C1B—C2B | −0.3 (3) |
N1A—N2A—C1A—C17A | 177.6 (2) | N1B—N2B—C1B—C17B | 177.2 (2) |
N2A—C1A—C2A—C10A | 172.6 (4) | N2B—C1B—C2B—C10B | 176.5 (3) |
C17A—C1A—C2A—C10A | −5.5 (6) | C17B—C1B—C2B—C10B | −0.6 (6) |
N2A—C1A—C2A—C3A | 1.6 (3) | N2B—C1B—C2B—C3B | 1.1 (3) |
C17A—C1A—C2A—C3A | −176.4 (3) | C17B—C1B—C2B—C3B | −176.0 (3) |
N2A—N1A—C3A—O1A | −177.3 (3) | N2B—N1B—C3B—O1B | −178.9 (3) |
C4A—N1A—C3A—O1A | −1.1 (5) | C4B—N1B—C3B—O1B | 2.6 (5) |
N2A—N1A—C3A—C2A | 1.6 (3) | N2B—N1B—C3B—C2B | 1.3 (3) |
C4A—N1A—C3A—C2A | 177.8 (3) | C4B—N1B—C3B—C2B | −177.2 (2) |
C10A—C2A—C3A—O1A | 4.0 (5) | C10B—C2B—C3B—O1B | 2.4 (5) |
C1A—C2A—C3A—O1A | 177.0 (3) | C1B—C2B—C3B—O1B | 178.8 (3) |
C10A—C2A—C3A—N1A | −174.9 (3) | C10B—C2B—C3B—N1B | −177.8 (2) |
C1A—C2A—C3A—N1A | −1.9 (3) | C1B—C2B—C3B—N1B | −1.4 (3) |
C3A—N1A—C4A—C5A | 2.3 (5) | C3B—N1B—C4B—C5B | −28.0 (4) |
N2A—N1A—C4A—C5A | 178.2 (2) | N2B—N1B—C4B—C5B | 153.6 (3) |
C3A—N1A—C4A—C9A | −177.0 (3) | C3B—N1B—C4B—C9B | 150.9 (3) |
N2A—N1A—C4A—C9A | −1.1 (4) | N2B—N1B—C4B—C9B | −27.4 (4) |
C9A—C4A—C5A—C6A | −0.3 (4) | C9B—C4B—C5B—C6B | 0.9 (5) |
N1A—C4A—C5A—C6A | −179.6 (3) | N1B—C4B—C5B—C6B | 179.9 (3) |
C4A—C5A—C6A—C7A | −0.4 (5) | C4B—C5B—C6B—C7B | −0.2 (5) |
C4A—C5A—C6A—Cl1A | 179.4 (2) | C4B—C5B—C6B—Cl1B | −178.6 (2) |
C5A—C6A—C7A—C8A | 0.2 (5) | C5B—C6B—C7B—C8B | 0.8 (5) |
Cl1A—C6A—C7A—C8A | −179.5 (2) | Cl1B—C6B—C7B—C8B | 179.1 (3) |
C5A—C6A—C7A—Cl2A | −179.6 (2) | C5B—C6B—C7B—Cl2B | 179.4 (2) |
Cl1A—C6A—C7A—Cl2A | 0.6 (4) | Cl1B—C6B—C7B—Cl2B | −2.3 (4) |
C6A—C7A—C8A—C9A | 0.6 (5) | C6B—C7B—C8B—C9B | −2.1 (5) |
Cl2A—C7A—C8A—C9A | −179.6 (3) | Cl2B—C7B—C8B—C9B | 179.3 (2) |
C7A—C8A—C9A—C4A | −1.2 (5) | C5B—C4B—C9B—C8B | −2.1 (5) |
C5A—C4A—C9A—C8A | 1.1 (5) | N1B—C4B—C9B—C8B | 178.9 (3) |
N1A—C4A—C9A—C8A | −179.6 (3) | C7B—C8B—C9B—C4B | 2.8 (5) |
C3A—C2A—C10A—O2A | 0.7 (5) | C3B—C2B—C10B—O2B | 2.0 (4) |
C1A—C2A—C10A—O2A | −169.3 (3) | C1B—C2B—C10B—O2B | −172.9 (3) |
C3A—C2A—C10A—C11A | −179.7 (3) | C3B—C2B—C10B—C11B | −177.6 (3) |
C1A—C2A—C10A—C11A | 10.3 (6) | C1B—C2B—C10B—C11B | 7.4 (6) |
O2A—C10A—C11A—C12A | 38.5 (4) | O2B—C10B—C11B—C16B | −141.9 (3) |
C2A—C10A—C11A—C12A | −141.0 (3) | C2B—C10B—C11B—C16B | 37.8 (5) |
O2A—C10A—C11A—C16A | −139.0 (3) | O2B—C10B—C11B—C12B | 33.8 (4) |
C2A—C10A—C11A—C16A | 41.5 (5) | C2B—C10B—C11B—C12B | −146.6 (3) |
C16A—C11A—C12A—C13A | −2.7 (4) | C16B—C11B—C12B—C13B | −2.0 (5) |
C10A—C11A—C12A—C13A | 179.7 (3) | C10B—C11B—C12B—C13B | −177.9 (3) |
C11A—C12A—C13A—C14A | 0.8 (5) | C11B—C12B—C13B—C14B | 1.2 (6) |
C12A—C13A—C14A—C15A | 1.9 (5) | C12B—C13B—C14B—C15B | 0.7 (6) |
C12A—C13A—C14A—C18A | −179.1 (3) | C12B—C13B—C14B—C18B | −179.7 (4) |
C13A—C14A—C15A—C16A | −2.7 (5) | C13B—C14B—C15B—C16B | −1.6 (6) |
C18A—C14A—C15A—C16A | 178.3 (3) | C18B—C14B—C15B—C16B | 178.7 (3) |
C14A—C15A—C16A—C11A | 0.8 (5) | C12B—C11B—C16B—C15B | 1.1 (5) |
C12A—C11A—C16A—C15A | 2.0 (4) | C10B—C11B—C16B—C15B | 176.8 (3) |
C10A—C11A—C16A—C15A | 179.5 (3) | C14B—C15B—C16B—C11B | 0.8 (5) |
Cg5 is the centroid of the C11A/C12A–C16A ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2A—H2A···O1A | 0.82 | 1.78 | 2.549 (3) | 155 |
C5A—H5A···O1A | 0.93 | 2.27 | 2.904 (3) | 125 |
O2B—H2B···O1B | 0.82 | 1.76 | 2.527 (3) | 154 |
C18A—H18B···Cg5i | 0.96 | 2.85 | 3.616 (4) | 136 |
Symmetry code: (i) −x, −y+1, −z+1. |
Cg5 is the centroid of the C11A/C12A–C16A ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2A—H2A···O1A | 0.82 | 1.78 | 2.549 (3) | 155 |
C5A—H5A···O1A | 0.93 | 2.27 | 2.904 (3) | 125 |
O2B—H2B···O1B | 0.82 | 1.76 | 2.527 (3) | 154 |
C18A—H18B···Cg5i | 0.96 | 2.85 | 3.616 (4) | 136 |
Symmetry code: (i) −x, −y+1, −z+1. |
Acknowledgements
RK acknowledges the Department of Science & Technology for the single-crystal X-ray diffractometer sanctioned as a National Facility under project No. SR/S2/CMP-47/2003.
References
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4-Acyl pyrazolones can form a variety of Schiff bases and are reported to be superior reagents in biological, clinical and analytical applications (Jadeja et al., (2012). In this article we are reporting synthesis and crystal structure of a new 4-acylpyrazolone derivative. The overall molecular geometry of the title compound is in good agreement with the corresponding values obtained in case of related structures (Abdel-Aziz et al.,2012). In the title compound C18H14Cl2N2O2, the dihedral angle between central pyrazole ring and dichlorophenyl ring is 2.23 (11) ° [molecule-A], between pyrazole ring [molecule-A] and p-tolyl ring [molecule-B] is 1.72 (11) ° and between dichlorophenyl ring [molecule-A] and p-tolyl ring [molecule-B] is 3.56 (11) °. The dihedral angles between pyrazole ring and dichlorophenyl ring [molecule-A], between pyrazole ring [molecule-A] and p-tolyl ring [molecule-B], between dichlorophenyl ring [molecule-A] and p-tolyl ring [molecule-B], shows that these rings are nearly co-planar to each other. The length of the double bond C3=O1 [1.291 (4) Å (molecule-A) and 1.279 (4) Å (molecule-B)] is significantly longer than that observed for carbonyl bonds, probably because atoms O1 and H2 are involved in strong intra-molecular O—H···O hydrogen bonds. The bond lengths of C6—Cl1 and C7—Cl2 [1.733 (3) Å and 1.733 (3) Å] for molecule-A, and [1.728 (4) Å and 1.730 (4) Å] for molecule-B, are quite comparable and agreed with the accepted value of 1.739 Å. The crystal structure features interactions of the type C—H···O, C—H···N, O—H···O and C—H···π. π - π interactions are also observed between the pyrazole and dichlorophenyl rings in the molecule-A at (1 - x, 2 - y, -z) [centroid–centroid seperation = 3.767 (2) Å], betwwen pyrazole rings in the molecule-B at (x, y, z) and (1 - x, -y, 1 - z) [centroid–centroid seperation = 3.797 (2) Å], between dichlorophenyl ring and p-tolyl ring (molecule-B) at (-x, -y, 1 - z) [centroid–centroid seperation = 3.707 (2) Å].