organic compounds
4-[(3-Hydroxyanilino)(phenyl)methylidene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one
aLaboratoire d'Electrochimie, d'Ingenierie Moléculaire et de Catalyse Redox, Departement de Génie des Procédés, Faculté de Technologie, Université Ferhat Abbas, Sétif, Algeria, and bInstitut de Chimie de Strasbourg, UMR 7177 CNRS-UdS, Service de Radiocristallographie, 1 rue Blaise Pascal, 67008 Strasbourg Cedex, France
*Correspondence e-mail: s_marouani20012002@yahoo.fr
In the title compound, C23H19N3O2, the dihedral angles formed by the pyrazolone ring with the three benzene rings are 30.91 (6), 60.96 (4) and 57.01 (4)°. The ligand is in the enamine–keto form and its structure is stabilized by an intramolecular N—H⋯O hydrogen bond. In the crystal, O—H⋯N hydrogen bonds link molecules into chains parallel to [01-1].
Related literature
For the synthesis and applications of pyrazolones and derivative compounds, see: Jensen (1959); Casas et al. (2007); Metwally et al. (1985); Morris et al. (1986); Raja et al. (2012); Delgado et al. (2006); Liskovskaya et al. (2006); Peng et al. (2004); Wang et al. (2002); Ramasamy et al. (2010); Thakar et al. (2010); Xu et al. (2006); Zhu et al. (2005); Wang et al. (2003).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2006); cell SAINT (Bruker, 2006); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536812023082/vm2173sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812023082/vm2173Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812023082/vm2173Isup3.cml
All reagents were obtained from commercial sources and used without further purification. H1PMBP was synthesized according to the method proposed by Jensen (Jensen,1959). Ethanol solution of 139 mg (0.1 mol) of H1PMBP and 54.5 mg (0.1 mol) of m-aminophenol were refluxed together for 24 h over a steam bath. The excess solvent was removed by evaporation. The title compound separated out as a yellow powder, which was collected, dried in air and dissolved afterwards in a hot mixture ethanol/water (9.5/0.5). A bright yellow single crystals, suitable for X-ray analysis, were obtained by slow cooling of a warmed ethanol solution for one night. The product is stable in air, and soluble in acetone and ethanol. Elemental analysis: calculated C 74.78, H 5.18, N 11.37%; found C 74.34, H 5.20, N 11.33%.
The H atoms, except for the H-atoms of the OH and NH groups which were located from Fourier difference maps, were positioned geometrically and refined using a riding model, with C—H = 0.95–0.99 Å and with Uiso(H) = 1.2 (1.5 for methyl groups) times Ueq(C).
Data collection: APEX2 (Bruker, 2006); cell
SAINT (Bruker, 2006); data reduction: SAINT (Bruker, 2006); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: publCIF (Westrip, 2010).C23H19N3O2 | Z = 2 |
Mr = 369.41 | F(000) = 388 |
Triclinic, P1 | Dx = 1.328 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.5239 (3) Å | Cell parameters from 5178 reflections |
b = 10.4564 (4) Å | θ = 2.2–27.5° |
c = 10.8120 (4) Å | µ = 0.09 mm−1 |
α = 66.870 (1)° | T = 173 K |
β = 72.208 (1)° | Prism, yellow |
γ = 72.908 (1)° | 0.18 × 0.18 × 0.12 mm |
V = 924.04 (6) Å3 |
Bruker APEXII CCD diffractometer | 4227 independent reflections |
Radiation source: fine-focus sealed tube | 3385 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.020 |
ϕ and ω scans | θmax = 27.5°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1995) | h = −12→12 |
Tmin = 0.985, Tmax = 0.990 | k = −13→13 |
11733 measured reflections | l = −14→14 |
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)] = 0.038 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.096 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0452P)2 + 0.2126P] where P = (Fo2 + 2Fc2)/3 |
4227 reflections | (Δ/σ)max < 0.001 |
262 parameters | Δρmax = 0.27 e Å−3 |
0 restraints | Δρmin = −0.19 e Å−3 |
C23H19N3O2 | γ = 72.908 (1)° |
Mr = 369.41 | V = 924.04 (6) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.5239 (3) Å | Mo Kα radiation |
b = 10.4564 (4) Å | µ = 0.09 mm−1 |
c = 10.8120 (4) Å | T = 173 K |
α = 66.870 (1)° | 0.18 × 0.18 × 0.12 mm |
β = 72.208 (1)° |
Bruker APEXII CCD diffractometer | 4227 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1995) | 3385 reflections with I > 2σ(I) |
Tmin = 0.985, Tmax = 0.990 | Rint = 0.020 |
11733 measured reflections |
R[F2 > 2σ(F2)] = 0.038 | 0 restraints |
wR(F2) = 0.096 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.27 e Å−3 |
4227 reflections | Δρmin = −0.19 e Å−3 |
262 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 | ||
C1 | −0.01116 (13) | 0.22740 (12) | 1.05711 (11) | 0.0238 (2) | |
C2 | −0.09952 (13) | 0.14965 (12) | 1.04593 (12) | 0.0248 (2) | |
H2 | −0.1181 | 0.0632 | 1.1168 | 0.030* | |
C3 | −0.16031 (14) | 0.19913 (13) | 0.93055 (12) | 0.0279 (3) | |
H3 | −0.2208 | 0.1457 | 0.9232 | 0.034* | |
C4 | −0.13494 (14) | 0.32492 (13) | 0.82548 (12) | 0.0274 (3) | |
H4 | −0.1776 | 0.3579 | 0.7470 | 0.033* | |
C5 | −0.04596 (13) | 0.40146 (12) | 0.83745 (11) | 0.0223 (2) | |
C6 | 0.01657 (13) | 0.35299 (12) | 0.95185 (12) | 0.0237 (2) | |
H6 | 0.0785 | 0.4056 | 0.9584 | 0.028* | |
C7 | −0.08678 (13) | 0.63561 (12) | 0.65184 (11) | 0.0219 (2) | |
C8 | −0.25221 (13) | 0.65063 (12) | 0.68941 (12) | 0.0232 (2) | |
C9 | −0.33026 (14) | 0.64999 (13) | 0.82172 (13) | 0.0300 (3) | |
H9 | −0.2779 | 0.6444 | 0.8863 | 0.036* | |
C10 | −0.48420 (16) | 0.65755 (15) | 0.85869 (16) | 0.0407 (3) | |
H10 | −0.5378 | 0.6578 | 0.9485 | 0.049* | |
C11 | −0.56012 (16) | 0.66473 (16) | 0.76479 (18) | 0.0455 (4) | |
H11 | −0.6657 | 0.6690 | 0.7908 | 0.055* | |
C12 | −0.48350 (16) | 0.66578 (16) | 0.63376 (17) | 0.0419 (4) | |
H12 | −0.5364 | 0.6711 | 0.5697 | 0.050* | |
C13 | −0.32956 (14) | 0.65906 (14) | 0.59534 (14) | 0.0304 (3) | |
H13 | −0.2769 | 0.6602 | 0.5049 | 0.036* | |
C14 | −0.00957 (13) | 0.73156 (12) | 0.53841 (11) | 0.0222 (2) | |
C15 | −0.05592 (13) | 0.86809 (12) | 0.44249 (11) | 0.0225 (2) | |
C16 | 0.15253 (13) | 0.70331 (12) | 0.50200 (11) | 0.0235 (2) | |
C17 | −0.20976 (14) | 0.95569 (13) | 0.43172 (13) | 0.0307 (3) | |
H17A | −0.2025 | 1.0550 | 0.3791 | 0.046* | |
H17B | −0.2716 | 0.9486 | 0.5243 | 0.046* | |
H17C | −0.2561 | 0.9210 | 0.3847 | 0.046* | |
C18 | 0.33584 (13) | 0.83449 (13) | 0.30742 (11) | 0.0240 (2) | |
C19 | 0.36999 (15) | 0.96867 (14) | 0.24046 (13) | 0.0316 (3) | |
H19 | 0.2952 | 1.0506 | 0.2464 | 0.038* | |
C20 | 0.51470 (17) | 0.98159 (16) | 0.16477 (16) | 0.0442 (4) | |
H20 | 0.5384 | 1.0733 | 0.1181 | 0.053* | |
C21 | 0.62474 (17) | 0.86396 (17) | 0.15593 (16) | 0.0449 (4) | |
H21 | 0.7240 | 0.8742 | 0.1053 | 0.054* | |
C22 | 0.58928 (16) | 0.73101 (16) | 0.22143 (15) | 0.0410 (3) | |
H22 | 0.6645 | 0.6495 | 0.2148 | 0.049* | |
C23 | 0.44521 (15) | 0.71527 (14) | 0.29675 (14) | 0.0337 (3) | |
H23 | 0.4213 | 0.6235 | 0.3408 | 0.040* | |
N1 | −0.00339 (12) | 0.52529 (11) | 0.72968 (10) | 0.0260 (2) | |
N2 | 0.06091 (11) | 0.91852 (10) | 0.35404 (9) | 0.0235 (2) | |
N3 | 0.18928 (11) | 0.81690 (10) | 0.38753 (10) | 0.0235 (2) | |
O1 | 0.05168 (12) | 0.18868 (11) | 1.16665 (10) | 0.0402 (3) | |
O2 | 0.24418 (9) | 0.60062 (9) | 0.55996 (9) | 0.0323 (2) | |
H1N | 0.0991 (19) | 0.5271 (17) | 0.6993 (17) | 0.044 (4)* | |
H1 | 0.049 (2) | 0.096 (2) | 1.223 (2) | 0.068 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0256 (6) | 0.0201 (6) | 0.0209 (5) | −0.0036 (4) | −0.0070 (4) | −0.0011 (4) |
C2 | 0.0292 (6) | 0.0175 (5) | 0.0218 (5) | −0.0074 (4) | −0.0011 (5) | −0.0020 (4) |
C3 | 0.0337 (7) | 0.0248 (6) | 0.0267 (6) | −0.0127 (5) | −0.0049 (5) | −0.0063 (5) |
C4 | 0.0338 (7) | 0.0265 (6) | 0.0220 (5) | −0.0103 (5) | −0.0089 (5) | −0.0029 (5) |
C5 | 0.0211 (5) | 0.0184 (5) | 0.0205 (5) | −0.0049 (4) | −0.0029 (4) | 0.0002 (4) |
C6 | 0.0216 (6) | 0.0197 (5) | 0.0264 (6) | −0.0060 (4) | −0.0071 (4) | −0.0015 (5) |
C7 | 0.0247 (6) | 0.0216 (6) | 0.0195 (5) | −0.0074 (4) | −0.0079 (4) | −0.0027 (4) |
C8 | 0.0231 (6) | 0.0173 (5) | 0.0254 (5) | −0.0057 (4) | −0.0063 (4) | −0.0011 (4) |
C9 | 0.0329 (7) | 0.0233 (6) | 0.0280 (6) | −0.0064 (5) | −0.0040 (5) | −0.0038 (5) |
C10 | 0.0332 (7) | 0.0286 (7) | 0.0441 (8) | −0.0056 (6) | 0.0080 (6) | −0.0082 (6) |
C11 | 0.0214 (7) | 0.0317 (7) | 0.0719 (11) | −0.0054 (5) | −0.0030 (7) | −0.0106 (7) |
C12 | 0.0309 (7) | 0.0354 (8) | 0.0619 (9) | −0.0061 (6) | −0.0225 (7) | −0.0097 (7) |
C13 | 0.0284 (6) | 0.0288 (7) | 0.0331 (6) | −0.0067 (5) | −0.0109 (5) | −0.0054 (5) |
C14 | 0.0227 (6) | 0.0219 (6) | 0.0202 (5) | −0.0063 (4) | −0.0081 (4) | −0.0013 (4) |
C15 | 0.0272 (6) | 0.0213 (6) | 0.0174 (5) | −0.0055 (4) | −0.0061 (4) | −0.0032 (4) |
C16 | 0.0250 (6) | 0.0223 (6) | 0.0214 (5) | −0.0101 (5) | −0.0081 (4) | 0.0010 (4) |
C17 | 0.0290 (6) | 0.0259 (6) | 0.0251 (6) | −0.0005 (5) | −0.0058 (5) | 0.0004 (5) |
C18 | 0.0256 (6) | 0.0255 (6) | 0.0200 (5) | −0.0107 (5) | −0.0045 (4) | −0.0030 (5) |
C19 | 0.0327 (7) | 0.0236 (6) | 0.0322 (6) | −0.0102 (5) | 0.0014 (5) | −0.0059 (5) |
C20 | 0.0408 (8) | 0.0318 (7) | 0.0482 (8) | −0.0192 (6) | 0.0101 (6) | −0.0073 (6) |
C21 | 0.0311 (7) | 0.0428 (8) | 0.0477 (8) | −0.0141 (6) | 0.0095 (6) | −0.0104 (7) |
C22 | 0.0320 (7) | 0.0336 (8) | 0.0440 (8) | −0.0035 (6) | 0.0012 (6) | −0.0086 (6) |
C23 | 0.0326 (7) | 0.0248 (6) | 0.0362 (7) | −0.0092 (5) | −0.0040 (5) | −0.0025 (5) |
N1 | 0.0220 (5) | 0.0240 (5) | 0.0247 (5) | −0.0094 (4) | −0.0078 (4) | 0.0050 (4) |
N2 | 0.0269 (5) | 0.0198 (5) | 0.0199 (4) | −0.0046 (4) | −0.0070 (4) | −0.0011 (4) |
N3 | 0.0236 (5) | 0.0200 (5) | 0.0222 (5) | −0.0077 (4) | −0.0071 (4) | 0.0017 (4) |
O1 | 0.0596 (7) | 0.0281 (5) | 0.0339 (5) | −0.0194 (5) | −0.0282 (5) | 0.0099 (4) |
O2 | 0.0235 (4) | 0.0282 (5) | 0.0338 (5) | −0.0087 (4) | −0.0119 (4) | 0.0084 (4) |
C1—O1 | 1.3560 (14) | C13—H13 | 0.9500 |
C1—C2 | 1.3875 (17) | C14—C15 | 1.4334 (15) |
C1—C6 | 1.3913 (15) | C14—C16 | 1.4413 (16) |
C2—C3 | 1.3847 (17) | C15—N2 | 1.3150 (15) |
C2—H2 | 0.9500 | C15—C17 | 1.4936 (16) |
C3—C4 | 1.3872 (16) | C16—O2 | 1.2499 (14) |
C3—H3 | 0.9500 | C16—N3 | 1.3747 (14) |
C4—C5 | 1.3865 (17) | C17—H17A | 0.9800 |
C4—H4 | 0.9500 | C17—H17B | 0.9800 |
C5—C6 | 1.3863 (16) | C17—H17C | 0.9800 |
C5—N1 | 1.4259 (14) | C18—C19 | 1.3874 (17) |
C6—H6 | 0.9500 | C18—C23 | 1.3887 (18) |
C7—N1 | 1.3329 (15) | C18—N3 | 1.4211 (15) |
C7—C14 | 1.4026 (15) | C19—C20 | 1.3859 (18) |
C7—C8 | 1.4784 (16) | C19—H19 | 0.9500 |
C8—C13 | 1.3907 (17) | C20—C21 | 1.376 (2) |
C8—C9 | 1.3945 (17) | C20—H20 | 0.9500 |
C9—C10 | 1.3835 (19) | C21—C22 | 1.380 (2) |
C9—H9 | 0.9500 | C21—H21 | 0.9500 |
C10—C11 | 1.384 (2) | C22—C23 | 1.3847 (18) |
C10—H10 | 0.9500 | C22—H22 | 0.9500 |
C11—C12 | 1.378 (2) | C23—H23 | 0.9500 |
C11—H11 | 0.9500 | N1—H1N | 0.933 (16) |
C12—C13 | 1.3846 (18) | N2—N3 | 1.3998 (13) |
C12—H12 | 0.9500 | O1—H1 | 0.93 (2) |
O1—C1—C2 | 123.78 (10) | C7—C14—C16 | 120.73 (10) |
O1—C1—C6 | 116.53 (11) | C15—C14—C16 | 105.31 (9) |
C2—C1—C6 | 119.69 (10) | N2—C15—C14 | 111.05 (10) |
C3—C2—C1 | 119.42 (11) | N2—C15—C17 | 118.70 (10) |
C3—C2—H2 | 120.3 | C14—C15—C17 | 130.25 (10) |
C1—C2—H2 | 120.3 | O2—C16—N3 | 125.58 (11) |
C2—C3—C4 | 121.52 (11) | O2—C16—C14 | 129.22 (10) |
C2—C3—H3 | 119.2 | N3—C16—C14 | 105.19 (10) |
C4—C3—H3 | 119.2 | C15—C17—H17A | 109.5 |
C5—C4—C3 | 118.58 (11) | C15—C17—H17B | 109.5 |
C5—C4—H4 | 120.7 | H17A—C17—H17B | 109.5 |
C3—C4—H4 | 120.7 | C15—C17—H17C | 109.5 |
C6—C5—C4 | 120.65 (10) | H17A—C17—H17C | 109.5 |
C6—C5—N1 | 116.68 (10) | H17B—C17—H17C | 109.5 |
C4—C5—N1 | 122.45 (10) | C19—C18—C23 | 120.14 (11) |
C5—C6—C1 | 120.13 (11) | C19—C18—N3 | 120.74 (11) |
C5—C6—H6 | 119.9 | C23—C18—N3 | 119.12 (11) |
C1—C6—H6 | 119.9 | C20—C19—C18 | 119.12 (13) |
N1—C7—C14 | 116.75 (10) | C20—C19—H19 | 120.4 |
N1—C7—C8 | 119.11 (10) | C18—C19—H19 | 120.4 |
C14—C7—C8 | 124.14 (10) | C21—C20—C19 | 121.20 (13) |
C13—C8—C9 | 119.82 (11) | C21—C20—H20 | 119.4 |
C13—C8—C7 | 120.26 (11) | C19—C20—H20 | 119.4 |
C9—C8—C7 | 119.86 (11) | C20—C21—C22 | 119.28 (13) |
C10—C9—C8 | 119.79 (13) | C20—C21—H21 | 120.4 |
C10—C9—H9 | 120.1 | C22—C21—H21 | 120.4 |
C8—C9—H9 | 120.1 | C21—C22—C23 | 120.66 (14) |
C9—C10—C11 | 120.01 (14) | C21—C22—H22 | 119.7 |
C9—C10—H10 | 120.0 | C23—C22—H22 | 119.7 |
C11—C10—H10 | 120.0 | C22—C23—C18 | 119.59 (12) |
C12—C11—C10 | 120.40 (13) | C22—C23—H23 | 120.2 |
C12—C11—H11 | 119.8 | C18—C23—H23 | 120.2 |
C10—C11—H11 | 119.8 | C7—N1—C5 | 129.53 (10) |
C11—C12—C13 | 120.10 (14) | C7—N1—H1N | 112.5 (10) |
C11—C12—H12 | 119.9 | C5—N1—H1N | 117.4 (10) |
C13—C12—H12 | 119.9 | C15—N2—N3 | 106.92 (9) |
C12—C13—C8 | 119.87 (13) | C16—N3—N2 | 111.43 (9) |
C12—C13—H13 | 120.1 | C16—N3—C18 | 126.83 (10) |
C8—C13—H13 | 120.1 | N2—N3—C18 | 121.73 (9) |
C7—C14—C15 | 133.89 (11) | C1—O1—H1 | 112.6 (12) |
O1—C1—C2—C3 | 179.16 (12) | C16—C14—C15—C17 | −177.58 (12) |
C6—C1—C2—C3 | −0.70 (18) | C7—C14—C16—O2 | −1.3 (2) |
C1—C2—C3—C4 | 0.02 (19) | C15—C14—C16—O2 | 176.13 (13) |
C2—C3—C4—C5 | 0.24 (19) | C7—C14—C16—N3 | 179.66 (11) |
C3—C4—C5—C6 | 0.17 (19) | C15—C14—C16—N3 | −2.87 (13) |
C3—C4—C5—N1 | 174.57 (11) | C23—C18—C19—C20 | −0.9 (2) |
C4—C5—C6—C1 | −0.85 (18) | N3—C18—C19—C20 | 179.14 (12) |
N1—C5—C6—C1 | −175.56 (11) | C18—C19—C20—C21 | −0.5 (2) |
O1—C1—C6—C5 | −178.76 (11) | C19—C20—C21—C22 | 1.3 (3) |
C2—C1—C6—C5 | 1.12 (18) | C20—C21—C22—C23 | −0.8 (3) |
N1—C7—C8—C13 | −123.11 (13) | C21—C22—C23—C18 | −0.6 (2) |
C14—C7—C8—C13 | 57.38 (17) | C19—C18—C23—C22 | 1.4 (2) |
N1—C7—C8—C9 | 54.03 (16) | N3—C18—C23—C22 | −178.59 (12) |
C14—C7—C8—C9 | −125.48 (13) | C14—C7—N1—C5 | −169.85 (12) |
C13—C8—C9—C10 | 0.09 (18) | C8—C7—N1—C5 | 10.60 (19) |
C7—C8—C9—C10 | −177.06 (11) | C6—C5—N1—C7 | −140.00 (13) |
C8—C9—C10—C11 | 0.4 (2) | C4—C5—N1—C7 | 45.39 (19) |
C9—C10—C11—C12 | −0.6 (2) | C14—C15—N2—N3 | 0.31 (13) |
C10—C11—C12—C13 | 0.3 (2) | C17—C15—N2—N3 | 179.62 (10) |
C11—C12—C13—C8 | 0.3 (2) | O2—C16—N3—N2 | −175.82 (12) |
C9—C8—C13—C12 | −0.45 (19) | C14—C16—N3—N2 | 3.24 (13) |
C7—C8—C13—C12 | 176.69 (12) | O2—C16—N3—C18 | 5.2 (2) |
N1—C7—C14—C15 | −170.95 (13) | C14—C16—N3—C18 | −175.73 (11) |
C8—C7—C14—C15 | 8.6 (2) | C15—N2—N3—C16 | −2.30 (13) |
N1—C7—C14—C16 | 5.66 (17) | C15—N2—N3—C18 | 176.73 (10) |
C8—C7—C14—C16 | −174.82 (11) | C19—C18—N3—C16 | −149.41 (12) |
C7—C14—C15—N2 | 178.60 (13) | C23—C18—N3—C16 | 30.60 (18) |
C16—C14—C15—N2 | 1.63 (13) | C19—C18—N3—N2 | 31.72 (17) |
C7—C14—C15—C17 | −0.6 (2) | C23—C18—N3—N2 | −148.27 (12) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O2 | 0.933 (16) | 1.792 (17) | 2.6189 (13) | 146.1 (14) |
O1—H1···N2i | 0.93 (2) | 1.84 (2) | 2.7494 (13) | 169.1 (18) |
Symmetry code: (i) x, y−1, z+1. |
Experimental details
Crystal data | |
Chemical formula | C23H19N3O2 |
Mr | 369.41 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 173 |
a, b, c (Å) | 9.5239 (3), 10.4564 (4), 10.8120 (4) |
α, β, γ (°) | 66.870 (1), 72.208 (1), 72.908 (1) |
V (Å3) | 924.04 (6) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.18 × 0.18 × 0.12 |
Data collection | |
Diffractometer | Bruker APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1995) |
Tmin, Tmax | 0.985, 0.990 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11733, 4227, 3385 |
Rint | 0.020 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.038, 0.096, 1.05 |
No. of reflections | 4227 |
No. of parameters | 262 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.27, −0.19 |
Computer programs: APEX2 (Bruker, 2006), SAINT (Bruker, 2006), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEPIII (Burnett & Johnson, 1996), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O2 | 0.933 (16) | 1.792 (17) | 2.6189 (13) | 146.1 (14) |
O1—H1···N2i | 0.93 (2) | 1.84 (2) | 2.7494 (13) | 169.1 (18) |
Symmetry code: (i) x, y−1, z+1. |
Acknowledgements
The authors would like to thank Professor Jean Claude Daran, Laboratoire de Chimie de Coordination, Toulouse, France, and Professor J. P. Gisselbrecht, Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide, Strasbourg University, France, for their valuable contributions.
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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.
4-Acyl-5-pyrazolones, a family of flexible β-diketonates and their derived Schiff bases are analgesics, antipyretics, anti-inflammatory agents and insecticides (Morris et al., 1986; Metwally et al., 1985; Casas et al., 2007; Raja et al., 2012). They have been widely used as extractants for metal traces (Delgado et al., 2006; Liskovskaya et al., 2006). Many of these compounds exhibit keto-enol tautomerism (Peng et al., 2004).
The reaction of 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone with primary amines affords Schiff bases that can function as N– and O-donor tridentates ligands,(Wang et al., 2002; Ramasamy et al., 2010; Thakar et al., 2010; Xu et al., 2006; Zhu et al., 2005; Wang et al., 2003). In order to expand this field, a novel Schiff base has been synthesized and its crystal structure is reported herein for the first time. The compound (I) was prepared from the reaction of 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (H1PMBP) and 3-aminophenol. The asymmetric unit of structure (I), and the atomic numbering used, are illustrated in Fig.1.
Steric hindrance affects this structure: the pyrazolone ring C14—N3 is not coplanar with the C18–C23 benzene ring and not perpendicular to the other two benzene rings C8–C13 and C1–C6. The dihedral angles are 30.92 (6), 60.96 (4) and 57.01 (4)°.
The O atom of the 3-methyl-1-phenylpyrazol-5-one unit and the N atom of the (3-hydroxyphenyl) amine group are available for coordination with metals. The pyrazolone ring is planar and atoms O2, C16, C14, C7 and N1 are coplanar, the largest deviation being 0.0179 (7) Å for atom C16. The dihedral angle between this plane (O2 C16 C14 C7 N1) and the pyrazolone ring of PMBP is 4.43 (8)°, close to the values of 4.01 (12)° found in (4Z)-[4 fluorobenzylamino)(phenyl)-methylene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one and 5.05 (3)° found in 4-[(2-hydroxyphenylamino)phenylmethylene] -5-methyl-2-phenyl-2H-pyrazol-3(4H)-one, respectively (Xu et al., 2006; Wang et al., 2002).
The C15—N2—N3—C18 torsion angle is 176.73 (10)° , different from the value of 16.7 (3)° in 3-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenylpyrazol-4-ylmino)-4,4,4-trifluoro-1-(2-thienyl)-butane-1,2-dione (Wang et al., 2002). Small torsion angles for N1 C7 C14 C16 [5.66 (17); O1 C1 C6 C5 [-178.76 (11)° ]and N1 C5 C6 C1 [-175.56 (11)° ] show that atoms O1, N1 and O2 are in a cis conformation and can act as the coordinating atoms of a tridentate ligand.
In the pyrazole ring, the bond lengths C14—C16, C14—C15, C15—N2, N2—N3 and C16—N3 lie between classical single and double bond lengths, indicating extensive conjugation and electron delocalization. The bond angles within this ring deviate by up to 4° from the 108° angle of a regular pentagon.
A strong intramolecular N1—H1N···O2 hydrogen bond (Table 1) is observed, leading to an enamine–keto tautomeric form. This case is similar to that found by Xu et al. (2006) for 4-[(2-hydroxyphenylamino)phenylmethylene] -5-methyl-2-phenyl-2H-pyrazol-3(4H)-one [N—O = 2.75 (3) Å and N3—H3···O1 = 143 (4)°]. The molecule is further stabilized by an intermolecular O—H···N hydrogen bond (Table1, Fig.2). Intermolecular O—H···N hydrogen bonds link molecules forming chains parallel to the [0 1 -1] direction. Part of the chain structure is shown in Fig.2.