organic compounds
(E)-1,5-Dimethyl-4-[3-(4-nitrobenzyloxy)benzylideneamino]-2-phenyl-1H-pyrazol-3(2H)-one
aCollege of Chemical & Pharmaceutical Engineering, Hebei University of Science & Technology, Shijiazhuang 050018, People's Republic of China, and bCollege of Sciences, Hebei University of Science & Technology, Shijiazhuang 050018, People's Republic of China
*Correspondence e-mail: liu_shouxin@163.com
In the title compound, C25H22N4O4, the central benzene ring, makes dihedral angles of 74.35 (6), 17.01 (8) and 62.19 (7)°, respectively, with the nitrobenzyl ring, the pyrazolone ring and the terminal phenyl ring. Intermolecular C—H⋯O hydrogen bonds help to consolidate the crystal packing.
Related literature
For the potential applications of et al. (1979); Larson & Pecoraro (1991); Santos et al. (2001). For a related structure, see: Han & Zhen (2005). For bond-length data, see: Allen et al. (1987).
see: JonesExperimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1999); cell SAINT (Bruker, 1999); 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.
Supporting information
10.1107/S1600536808035046/hb2829sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808035046/hb2829Isup2.hkl
An anhydrous ethanol solution (50 ml) of 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one (2.03 g, 10 mmol) was added to an anhydrous ethanol solution (100 ml) of 3-(4-nitrobenzyloxy)benzaldehyde (2.57 g, 10 mmol) and the mixture stirred at 350 K for 5 h under nitrogen, giving a yellow precipitate. The product was isolated, recrystallized from acetonitrile and then dried in a vacuum to give the pure compound in 81% yield. Yellow single crystals of (I) suitable for X-ray analysis were obtained by slow evaporation of an acetonitrile solution.
The H atoms were included in calculated positions and refined using a riding model approximation. Constrained C—H and N—H bond lengths and isotropic U parameters: 0.93 Å and Uiso(H) = 1.2Ueq(C) for Csp2—H; 0.97 Å and Uiso(H) = 1.2Ueq(C) for methylene C—H; 0.96 Å and Uiso(H) = 1.5Ueq(C) for methyl C—H.
Data collection: SMART (Bruker, 1999); cell
SAINT (Bruker, 1999); data reduction: SAINT (Bruker, 1999); 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).Fig. 1. The structure of (I) with displacement ellipsoids for non-H atoms drawn at the 30% probability level. | |
Fig. 2. Packing diagram for (I), with H bonds drawn as dashed lines. |
C25H22N4O4 | Z = 2 |
Mr = 442.47 | F(000) = 464 |
Triclinic, P1 | Dx = 1.326 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.003 (2) Å | Cell parameters from 2119 reflections |
b = 9.798 (3) Å | θ = 2.4–23.9° |
c = 14.425 (5) Å | µ = 0.09 mm−1 |
α = 90.844 (5)° | T = 294 K |
β = 92.310 (6)° | Block, yellow |
γ = 101.202 (6)° | 0.20 × 0.18 × 0.10 mm |
V = 1108.4 (6) Å3 |
Bruker SMART APEX CCD area-detector diffractometer | 3898 independent reflections |
Radiation source: fine-focus sealed tube | 2302 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.026 |
ϕ and ω scans | θmax = 25.0°, θmin = 1.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −4→9 |
Tmin = 0.956, Tmax = 0.991 | k = −11→11 |
5780 measured reflections | l = −16→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)] = 0.046 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.125 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0501P)2 + 0.1798P] where P = (Fo2 + 2Fc2)/3 |
3898 reflections | (Δ/σ)max < 0.001 |
300 parameters | Δρmax = 0.15 e Å−3 |
0 restraints | Δρmin = −0.16 e Å−3 |
C25H22N4O4 | γ = 101.202 (6)° |
Mr = 442.47 | V = 1108.4 (6) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.003 (2) Å | Mo Kα radiation |
b = 9.798 (3) Å | µ = 0.09 mm−1 |
c = 14.425 (5) Å | T = 294 K |
α = 90.844 (5)° | 0.20 × 0.18 × 0.10 mm |
β = 92.310 (6)° |
Bruker SMART APEX CCD area-detector diffractometer | 3898 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2302 reflections with I > 2σ(I) |
Tmin = 0.956, Tmax = 0.991 | Rint = 0.026 |
5780 measured reflections |
R[F2 > 2σ(F2)] = 0.046 | 0 restraints |
wR(F2) = 0.125 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.15 e Å−3 |
3898 reflections | Δρmin = −0.16 e Å−3 |
300 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 > 2σ(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 | ||
N1 | 1.8078 (5) | 0.2593 (4) | 0.4869 (2) | 0.0967 (10) | |
N2 | 0.7686 (2) | 0.2222 (2) | 0.00080 (12) | 0.0422 (5) | |
N3 | 0.5534 (2) | −0.05908 (19) | −0.14560 (13) | 0.0457 (5) | |
N4 | 0.4987 (2) | 0.05116 (19) | −0.19115 (13) | 0.0456 (5) | |
O1 | 1.9568 (4) | 0.3106 (3) | 0.4734 (2) | 0.1346 (12) | |
O2 | 1.7631 (4) | 0.1619 (4) | 0.5360 (2) | 0.1486 (14) | |
O3 | 1.2066 (2) | 0.43844 (16) | 0.24686 (11) | 0.0527 (5) | |
O4 | 0.5147 (2) | 0.28509 (17) | −0.15735 (12) | 0.0599 (5) | |
C1 | 1.3860 (3) | 0.3378 (3) | 0.42021 (17) | 0.0575 (7) | |
H1 | 1.2725 | 0.3070 | 0.4338 | 0.069* | |
C2 | 1.5095 (4) | 0.2734 (3) | 0.45952 (17) | 0.0656 (8) | |
H2 | 1.4805 | 0.1987 | 0.4986 | 0.079* | |
C3 | 1.6757 (4) | 0.3223 (3) | 0.43939 (19) | 0.0625 (8) | |
C4 | 1.7205 (4) | 0.4273 (3) | 0.3794 (2) | 0.0727 (9) | |
H4 | 1.8340 | 0.4570 | 0.3654 | 0.087* | |
C5 | 1.5966 (4) | 0.4887 (3) | 0.3400 (2) | 0.0634 (8) | |
H5 | 1.6262 | 0.5597 | 0.2981 | 0.076* | |
C6 | 1.4285 (3) | 0.4471 (2) | 0.36121 (16) | 0.0458 (6) | |
C7 | 1.2964 (3) | 0.5206 (3) | 0.32183 (17) | 0.0554 (7) | |
H7A | 1.2181 | 0.5341 | 0.3692 | 0.066* | |
H7B | 1.3500 | 0.6111 | 0.3001 | 0.066* | |
C8 | 1.0789 (3) | 0.4895 (2) | 0.20062 (15) | 0.0409 (6) | |
C9 | 0.9887 (3) | 0.4033 (2) | 0.13208 (15) | 0.0402 (6) | |
H9 | 1.0185 | 0.3181 | 0.1191 | 0.048* | |
C10 | 0.8547 (3) | 0.4415 (2) | 0.08225 (15) | 0.0390 (6) | |
C11 | 0.8139 (3) | 0.5693 (2) | 0.10135 (17) | 0.0510 (6) | |
H11 | 0.7245 | 0.5969 | 0.0682 | 0.061* | |
C12 | 0.9050 (3) | 0.6558 (3) | 0.16911 (17) | 0.0553 (7) | |
H12 | 0.8768 | 0.7419 | 0.1811 | 0.066* | |
C13 | 1.0377 (3) | 0.6174 (2) | 0.21982 (16) | 0.0480 (6) | |
H13 | 1.0982 | 0.6764 | 0.2660 | 0.058* | |
C14 | 0.7563 (3) | 0.3497 (2) | 0.01004 (15) | 0.0439 (6) | |
H14 | 0.6827 | 0.3853 | −0.0303 | 0.053* | |
C15 | 0.6729 (3) | 0.1381 (2) | −0.06885 (15) | 0.0394 (6) | |
C16 | 0.6681 (3) | −0.0010 (2) | −0.07688 (16) | 0.0430 (6) | |
C17 | 0.5600 (3) | 0.1751 (3) | −0.14076 (16) | 0.0441 (6) | |
C18 | 0.7646 (3) | −0.0883 (3) | −0.02119 (19) | 0.0609 (7) | |
H18A | 0.6885 | −0.1712 | −0.0035 | 0.091* | |
H18B | 0.8151 | −0.0370 | 0.0335 | 0.091* | |
H18C | 0.8526 | −0.1131 | −0.0575 | 0.091* | |
C19 | 0.5755 (4) | −0.1761 (3) | −0.2039 (2) | 0.0815 (10) | |
H19A | 0.6626 | −0.1452 | −0.2470 | 0.122* | |
H19B | 0.4702 | −0.2136 | −0.2374 | 0.122* | |
H19C | 0.6085 | −0.2467 | −0.1657 | 0.122* | |
C20 | 0.3426 (3) | 0.0258 (2) | −0.24550 (15) | 0.0429 (6) | |
C21 | 0.2107 (3) | −0.0796 (3) | −0.22521 (17) | 0.0546 (7) | |
H21 | 0.2218 | −0.1376 | −0.1758 | 0.066* | |
C22 | 0.0611 (3) | −0.0984 (3) | −0.2790 (2) | 0.0678 (8) | |
H22 | −0.0270 | −0.1724 | −0.2673 | 0.081* | |
C23 | 0.0401 (4) | −0.0105 (3) | −0.34928 (19) | 0.0680 (8) | |
H23 | −0.0626 | −0.0221 | −0.3838 | 0.082* | |
C24 | 0.1725 (4) | 0.0950 (3) | −0.36802 (19) | 0.0677 (8) | |
H24 | 0.1593 | 0.1557 | −0.4155 | 0.081* | |
C25 | 0.3243 (3) | 0.1123 (3) | −0.31772 (17) | 0.0590 (7) | |
H25 | 0.4148 | 0.1824 | −0.3324 | 0.071* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.086 (2) | 0.139 (3) | 0.079 (2) | 0.064 (2) | −0.0193 (19) | −0.031 (2) |
N2 | 0.0413 (11) | 0.0414 (12) | 0.0430 (12) | 0.0069 (9) | −0.0026 (9) | 0.0009 (9) |
N3 | 0.0454 (12) | 0.0396 (12) | 0.0529 (12) | 0.0122 (9) | −0.0050 (10) | −0.0050 (10) |
N4 | 0.0458 (12) | 0.0429 (12) | 0.0461 (12) | 0.0060 (9) | −0.0088 (9) | −0.0012 (10) |
O1 | 0.0696 (18) | 0.178 (3) | 0.167 (3) | 0.0610 (19) | −0.0341 (18) | −0.045 (2) |
O2 | 0.151 (3) | 0.210 (4) | 0.117 (3) | 0.116 (3) | −0.005 (2) | 0.049 (2) |
O3 | 0.0569 (10) | 0.0463 (10) | 0.0548 (11) | 0.0148 (8) | −0.0200 (8) | −0.0083 (8) |
O4 | 0.0688 (12) | 0.0429 (11) | 0.0664 (12) | 0.0114 (9) | −0.0219 (9) | 0.0046 (9) |
C1 | 0.0452 (15) | 0.0752 (19) | 0.0525 (16) | 0.0124 (14) | 0.0027 (13) | 0.0078 (14) |
C2 | 0.073 (2) | 0.090 (2) | 0.0424 (16) | 0.0360 (17) | 0.0040 (14) | 0.0140 (14) |
C3 | 0.0520 (18) | 0.094 (2) | 0.0489 (17) | 0.0370 (17) | −0.0127 (14) | −0.0179 (16) |
C4 | 0.0469 (18) | 0.086 (2) | 0.083 (2) | 0.0065 (16) | 0.0052 (16) | −0.0171 (19) |
C5 | 0.0579 (19) | 0.0587 (18) | 0.071 (2) | 0.0040 (15) | 0.0047 (15) | −0.0012 (14) |
C6 | 0.0453 (15) | 0.0501 (15) | 0.0398 (14) | 0.0061 (12) | −0.0059 (11) | −0.0075 (12) |
C7 | 0.0619 (17) | 0.0515 (16) | 0.0502 (16) | 0.0097 (13) | −0.0169 (13) | −0.0061 (12) |
C8 | 0.0443 (14) | 0.0389 (14) | 0.0392 (13) | 0.0080 (11) | −0.0015 (11) | 0.0033 (11) |
C9 | 0.0441 (14) | 0.0319 (13) | 0.0444 (14) | 0.0074 (11) | 0.0001 (11) | −0.0016 (11) |
C10 | 0.0412 (14) | 0.0371 (14) | 0.0385 (13) | 0.0066 (11) | 0.0011 (11) | 0.0039 (11) |
C11 | 0.0568 (16) | 0.0473 (15) | 0.0524 (16) | 0.0207 (13) | −0.0074 (12) | 0.0027 (12) |
C12 | 0.0704 (18) | 0.0422 (15) | 0.0566 (17) | 0.0211 (14) | −0.0041 (14) | −0.0063 (13) |
C13 | 0.0572 (16) | 0.0411 (15) | 0.0457 (15) | 0.0117 (12) | −0.0049 (12) | −0.0067 (11) |
C14 | 0.0427 (14) | 0.0462 (16) | 0.0429 (14) | 0.0099 (11) | −0.0038 (11) | 0.0055 (11) |
C15 | 0.0392 (13) | 0.0386 (14) | 0.0390 (13) | 0.0055 (11) | −0.0042 (11) | 0.0009 (11) |
C16 | 0.0377 (13) | 0.0432 (15) | 0.0481 (15) | 0.0091 (11) | −0.0009 (11) | −0.0016 (11) |
C17 | 0.0427 (14) | 0.0426 (15) | 0.0451 (15) | 0.0041 (12) | −0.0003 (11) | 0.0031 (12) |
C18 | 0.0627 (17) | 0.0536 (16) | 0.0697 (19) | 0.0229 (14) | −0.0131 (14) | −0.0031 (14) |
C19 | 0.081 (2) | 0.075 (2) | 0.094 (2) | 0.0380 (17) | −0.0233 (18) | −0.0422 (18) |
C20 | 0.0447 (14) | 0.0440 (14) | 0.0387 (14) | 0.0075 (12) | −0.0061 (11) | −0.0029 (11) |
C21 | 0.0507 (16) | 0.0564 (16) | 0.0528 (16) | 0.0015 (13) | −0.0078 (13) | 0.0144 (13) |
C22 | 0.0507 (17) | 0.0715 (19) | 0.075 (2) | −0.0033 (14) | −0.0114 (15) | 0.0185 (16) |
C23 | 0.0587 (18) | 0.074 (2) | 0.0666 (19) | 0.0077 (16) | −0.0233 (14) | 0.0060 (16) |
C24 | 0.082 (2) | 0.0652 (19) | 0.0503 (17) | 0.0049 (17) | −0.0183 (15) | 0.0127 (14) |
C25 | 0.0632 (18) | 0.0593 (17) | 0.0465 (16) | −0.0056 (14) | −0.0095 (13) | 0.0063 (13) |
N1—O2 | 1.204 (4) | C9—H9 | 0.9300 |
N1—O1 | 1.226 (4) | C10—C11 | 1.380 (3) |
N1—C3 | 1.474 (4) | C10—C14 | 1.464 (3) |
N2—C14 | 1.278 (3) | C11—C12 | 1.372 (3) |
N2—C15 | 1.394 (3) | C11—H11 | 0.9300 |
N3—C16 | 1.362 (3) | C12—C13 | 1.380 (3) |
N3—N4 | 1.404 (3) | C12—H12 | 0.9300 |
N3—C19 | 1.454 (3) | C13—H13 | 0.9300 |
N4—C17 | 1.399 (3) | C14—H14 | 0.9300 |
N4—C20 | 1.425 (3) | C15—C16 | 1.360 (3) |
O3—C8 | 1.376 (3) | C15—C17 | 1.444 (3) |
O3—C7 | 1.422 (3) | C16—C18 | 1.483 (3) |
O4—C17 | 1.225 (3) | C18—H18A | 0.9600 |
C1—C6 | 1.377 (3) | C18—H18B | 0.9600 |
C1—C2 | 1.380 (3) | C18—H18C | 0.9600 |
C1—H1 | 0.9300 | C19—H19A | 0.9600 |
C2—C3 | 1.368 (4) | C19—H19B | 0.9600 |
C2—H2 | 0.9300 | C19—H19C | 0.9600 |
C3—C4 | 1.358 (4) | C20—C21 | 1.370 (3) |
C4—C5 | 1.366 (4) | C20—C25 | 1.373 (3) |
C4—H4 | 0.9300 | C21—C22 | 1.380 (3) |
C5—C6 | 1.376 (3) | C21—H21 | 0.9300 |
C5—H5 | 0.9300 | C22—C23 | 1.366 (4) |
C6—C7 | 1.489 (3) | C22—H22 | 0.9300 |
C7—H7A | 0.9700 | C23—C24 | 1.367 (4) |
C7—H7B | 0.9700 | C23—H23 | 0.9300 |
C8—C9 | 1.375 (3) | C24—C25 | 1.370 (4) |
C8—C13 | 1.383 (3) | C24—H24 | 0.9300 |
C9—C10 | 1.382 (3) | C25—H25 | 0.9300 |
O2—N1—O1 | 124.4 (4) | C11—C12—H12 | 119.4 |
O2—N1—C3 | 118.4 (4) | C13—C12—H12 | 119.4 |
O1—N1—C3 | 117.2 (4) | C12—C13—C8 | 118.6 (2) |
C14—N2—C15 | 120.26 (19) | C12—C13—H13 | 120.7 |
C16—N3—N4 | 106.75 (17) | C8—C13—H13 | 120.7 |
C16—N3—C19 | 123.4 (2) | N2—C14—C10 | 122.0 (2) |
N4—N3—C19 | 116.3 (2) | N2—C14—H14 | 119.0 |
C17—N4—N3 | 109.20 (18) | C10—C14—H14 | 119.0 |
C17—N4—C20 | 123.36 (19) | C16—C15—N2 | 123.0 (2) |
N3—N4—C20 | 119.91 (18) | C16—C15—C17 | 107.85 (19) |
C8—O3—C7 | 117.38 (18) | N2—C15—C17 | 129.1 (2) |
C6—C1—C2 | 121.0 (2) | C15—C16—N3 | 110.6 (2) |
C6—C1—H1 | 119.5 | C15—C16—C18 | 128.7 (2) |
C2—C1—H1 | 119.5 | N3—C16—C18 | 120.7 (2) |
C3—C2—C1 | 118.2 (3) | O4—C17—N4 | 123.6 (2) |
C3—C2—H2 | 120.9 | O4—C17—C15 | 131.6 (2) |
C1—C2—H2 | 120.9 | N4—C17—C15 | 104.81 (19) |
C4—C3—C2 | 122.0 (3) | C16—C18—H18A | 109.5 |
C4—C3—N1 | 120.2 (3) | C16—C18—H18B | 109.5 |
C2—C3—N1 | 117.8 (3) | H18A—C18—H18B | 109.5 |
C3—C4—C5 | 119.1 (3) | C16—C18—H18C | 109.5 |
C3—C4—H4 | 120.4 | H18A—C18—H18C | 109.5 |
C5—C4—H4 | 120.4 | H18B—C18—H18C | 109.5 |
C4—C5—C6 | 121.0 (3) | N3—C19—H19A | 109.5 |
C4—C5—H5 | 119.5 | N3—C19—H19B | 109.5 |
C6—C5—H5 | 119.5 | H19A—C19—H19B | 109.5 |
C5—C6—C1 | 118.6 (2) | N3—C19—H19C | 109.5 |
C5—C6—C7 | 120.3 (2) | H19A—C19—H19C | 109.5 |
C1—C6—C7 | 121.0 (2) | H19B—C19—H19C | 109.5 |
O3—C7—C6 | 108.51 (19) | C21—C20—C25 | 120.1 (2) |
O3—C7—H7A | 110.0 | C21—C20—N4 | 121.3 (2) |
C6—C7—H7A | 110.0 | C25—C20—N4 | 118.6 (2) |
O3—C7—H7B | 110.0 | C20—C21—C22 | 119.1 (2) |
C6—C7—H7B | 110.0 | C20—C21—H21 | 120.5 |
H7A—C7—H7B | 108.4 | C22—C21—H21 | 120.5 |
C9—C8—O3 | 115.52 (19) | C23—C22—C21 | 121.2 (3) |
C9—C8—C13 | 120.2 (2) | C23—C22—H22 | 119.4 |
O3—C8—C13 | 124.3 (2) | C21—C22—H22 | 119.4 |
C8—C9—C10 | 121.0 (2) | C22—C23—C24 | 118.9 (3) |
C8—C9—H9 | 119.5 | C22—C23—H23 | 120.5 |
C10—C9—H9 | 119.5 | C24—C23—H23 | 120.5 |
C11—C10—C9 | 118.8 (2) | C23—C24—C25 | 120.8 (3) |
C11—C10—C14 | 119.8 (2) | C23—C24—H24 | 119.6 |
C9—C10—C14 | 121.4 (2) | C25—C24—H24 | 119.6 |
C12—C11—C10 | 120.2 (2) | C24—C25—C20 | 119.8 (2) |
C12—C11—H11 | 119.9 | C24—C25—H25 | 120.1 |
C10—C11—H11 | 119.9 | C20—C25—H25 | 120.1 |
C11—C12—C13 | 121.2 (2) | ||
C16—N3—N4—C17 | −9.3 (2) | C15—N2—C14—C10 | −180.0 (2) |
C19—N3—N4—C17 | −151.5 (2) | C11—C10—C14—N2 | −167.5 (2) |
C16—N3—N4—C20 | −160.00 (19) | C9—C10—C14—N2 | 12.7 (3) |
C19—N3—N4—C20 | 57.8 (3) | C14—N2—C15—C16 | −173.7 (2) |
C6—C1—C2—C3 | 1.0 (4) | C14—N2—C15—C17 | 3.7 (3) |
C1—C2—C3—C4 | −2.9 (4) | N2—C15—C16—N3 | 174.59 (19) |
C1—C2—C3—N1 | 175.8 (2) | C17—C15—C16—N3 | −3.3 (3) |
O2—N1—C3—C4 | −176.4 (3) | N2—C15—C16—C18 | −3.9 (4) |
O1—N1—C3—C4 | 3.8 (4) | C17—C15—C16—C18 | 178.2 (2) |
O2—N1—C3—C2 | 4.9 (5) | N4—N3—C16—C15 | 7.7 (3) |
O1—N1—C3—C2 | −174.9 (3) | C19—N3—C16—C15 | 146.6 (2) |
C2—C3—C4—C5 | 1.9 (4) | N4—N3—C16—C18 | −173.6 (2) |
N1—C3—C4—C5 | −176.7 (3) | C19—N3—C16—C18 | −34.8 (4) |
C3—C4—C5—C6 | 1.0 (4) | N3—N4—C17—O4 | −170.3 (2) |
C4—C5—C6—C1 | −2.8 (4) | C20—N4—C17—O4 | −20.9 (4) |
C4—C5—C6—C7 | 176.5 (2) | N3—N4—C17—C15 | 7.2 (2) |
C2—C1—C6—C5 | 1.8 (4) | C20—N4—C17—C15 | 156.7 (2) |
C2—C1—C6—C7 | −177.4 (2) | C16—C15—C17—O4 | 174.8 (3) |
C8—O3—C7—C6 | −179.61 (19) | N2—C15—C17—O4 | −2.9 (4) |
C5—C6—C7—O3 | 101.9 (3) | C16—C15—C17—N4 | −2.5 (2) |
C1—C6—C7—O3 | −78.9 (3) | N2—C15—C17—N4 | 179.8 (2) |
C7—O3—C8—C9 | −176.4 (2) | C17—N4—C20—C21 | −117.6 (3) |
C7—O3—C8—C13 | 2.9 (3) | N3—N4—C20—C21 | 28.8 (3) |
O3—C8—C9—C10 | 178.4 (2) | C17—N4—C20—C25 | 60.5 (3) |
C13—C8—C9—C10 | −0.9 (3) | N3—N4—C20—C25 | −153.1 (2) |
C8—C9—C10—C11 | 1.1 (3) | C25—C20—C21—C22 | 0.9 (4) |
C8—C9—C10—C14 | −179.1 (2) | N4—C20—C21—C22 | 179.0 (2) |
C9—C10—C11—C12 | −0.4 (4) | C20—C21—C22—C23 | −2.8 (4) |
C14—C10—C11—C12 | 179.8 (2) | C21—C22—C23—C24 | 2.2 (5) |
C10—C11—C12—C13 | −0.4 (4) | C22—C23—C24—C25 | 0.3 (5) |
C11—C12—C13—C8 | 0.5 (4) | C23—C24—C25—C20 | −2.2 (4) |
C9—C8—C13—C12 | 0.2 (3) | C21—C20—C25—C24 | 1.6 (4) |
O3—C8—C13—C12 | −179.1 (2) | N4—C20—C25—C24 | −176.6 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C7—H7B···O4i | 0.97 | 2.50 | 3.293 (3) | 139 |
Symmetry code: (i) −x+2, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C25H22N4O4 |
Mr | 442.47 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 294 |
a, b, c (Å) | 8.003 (2), 9.798 (3), 14.425 (5) |
α, β, γ (°) | 90.844 (5), 92.310 (6), 101.202 (6) |
V (Å3) | 1108.4 (6) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.20 × 0.18 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.956, 0.991 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5780, 3898, 2302 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.046, 0.125, 1.01 |
No. of reflections | 3898 |
No. of parameters | 300 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.15, −0.16 |
Computer programs: SMART (Bruker, 1999), SAINT (Bruker, 1999), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C7—H7B···O4i | 0.97 | 2.50 | 3.293 (3) | 139 |
Symmetry code: (i) −x+2, −y+1, −z. |
Footnotes
‡Additional contact author, e-mail: han_jianrong@163.com.
Acknowledgements
The project was supported by the Foundation of the Education Department of Hebei Province (grant No. 606022).
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 has been a steady growth of interest in the synthesis, structure, and reactivity of Schiff bases due to their potential applications in areas such as biological modelling, catalysis, and molecular magnets (Jones et al., 1979; Larson & Pecoraro, 1991). One of the aims of investigating the structural chemistry of Schiff bases is to develop protein and enzyme mimics (Santos et al., 2001). Among the large number of the compounds, 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one forms a variety of Schiff bases with aldehydes, and the synthesis and crystal structures of them, such as (E)-(4)-(3-ethoxy-4-hydroxybenzylideneamino)- 1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one (Han & Zhen, 2005) have been reported. In present study we report the syntheses and molecular structure of the title compound, (I), (Fig. 1).
The bond lengths and angles in (I) are within their normal ranges (Allen et al., 1987). The pyrazolone ring (C15—C17/N2—N4/O4) is close to planar, with an r.m.s. deviation for the fitted atoms of 0.0441 Å. It makes a dihedral angle of 49.38 (8)° with the attached phenyl ring (C20—C25). The central benzene ring (C8—C14/O3) is also planar, with an r.m.s. deviation for the fitted atoms of 0.0079 Å, and it makes dihedral angles of 74.35 (6)°, 17.01 (8)° and 62.19 (7)° with the nitrobenzyl ring (C1—C7), the pyrazolone ring (C15—C17/N2—N4/O4) and the terminal phenyl ring (C20—C25), respectively.
Packing is stabilized by weak, non-classical intermolecular C7—H7B···O4i (symmetry code (i): 2 - x, 1 - y, -z) hydrogen bonds that form inversion related dimers, (Fig. 2, Table 1).