organic compounds
(E)-5-[(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)iminomethyl]-2-methoxyphenyl 4-bromobenzenesulfonate
aCollege of Sciences, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
*Correspondence e-mail: yao_jingxia@163.com
In the title compound, C25H22BrN3O5S, the central benzene ring makes dihedral angles of 32.02 (14), 37.49 (18) and 80.52 (13)°, respectively, with the pyrazolone ring, the bromobenzene ring and the terminal phenyl ring. This conformation features a short intramolecular C—H⋯O contact that generates an S(6) ring. In the crystal, inversion dimers linked by pairs of C—H⋯O=C hydrogen bonds occur.
Related literature
For general background to et al. (2001). For related structures, see: Chen & Yu (2006); Zhang et al. (2006). For reference structural data, see: Allen et al. (1987).
see: SantosExperimental
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
https://doi.org/10.1107/S1600536810017198/hb5442sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810017198/hb5442Isup2.hkl
An anhydrous ethanol solution (50 ml) of 5-formyl-2-methoxyphenyl 4-bromobenzenesulfonate (3.71 g, 10 mmol) was added to an anhydrous ethanol solution (50 ml) of 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one (2.03 g, 10 mmol) and the mixture stirred at 350 K for 3 h under N2, giving a yellow precipitate. The product was isolated, recrystallized from acetonitrile, and then dried in a vacuum to give pure compound (I) in 83% yield. Yellow blocks of (I) 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 bond lengths and isotropic U parameters: 0.93 Å and Uiso(H) = 1.2Ueq(C) for Csp2—H; 0.96 Å and Uiso(H) = 1.5Ueq(C) for methyl C—H.
There has been steady growth of interest in the synthesis, structure, and reactivity of
due to their potentially biological activities such as protein and enzyme mimics (Santos et al., 2001). Among the large number of compounds, 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one forms a variety of with and the synthesis and crystal structures of some of them, such as (E)-5-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro- 1H-pyrazol-4-yliminomethyl)-2-methoxyphenyl benzenesulfonate (Chen & Yu, 2006) and (E)-4-(2-(4-Chlorobenzyloxy)benzylideneamino) -2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one (Zhang et al., 2006) have been reported.Structural information is useful when investigating the coordination properties of
functioning as ligands. We report here the synthesis and molecular structure of the title Schiff base compound, (I), (Fig. 1)In the title molecule (Fig. 1), bond lengths and angles are within normal ranges (Allen et al., 1987). The pyrazolone ring (C15—C17/N1—N3/O5) is almost planar, with an r.m.s. deviation for fitted atoms of 0.0331 Å. It makes a dihedral angle of 51.63 (17)° with the attached phenyl ring (C20—C25). The central benzene ring (C7—C12/C14/O3/O4) is nearly planar, with an r.m.s. deviation for fitted atoms of 0.0371 Å. This group makes dihedral angles of 32.02 (14)°, 37.49 (18)° and 80.52 (13)°, respectively, with the the pyrazolone ring (C15—C17/N1—N3/O5), the bromobenzene ring (C1—C6) and the terminal phenyl ring (C20—C25).
An intramolecular C14—H14···O5═C16 hydrogen bond is found in (I) (Table 1), which helps to stabilize the conformation of the molecule. Packing is stabilised by weak, non-classical intermolecular C9—H9···O5═C16 hydrogen bonds that form inversion related dimers (Table 1, Fig. 2).
For general background to
see: Santos et al. (2001). For related structures, see: Chen & Yu (2006); Zhang et al. (2006). For reference structural data, see: Allen et al. (1987).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 50% probability level. | |
Fig. 2. A packing diagram for (I), with hydrogen bonds drawn as dashed lines. |
C25H22BrN3O5S | F(000) = 1136 |
Mr = 556.43 | Dx = 1.471 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 1629 reflections |
a = 11.102 (2) Å | θ = 2.2–19.4° |
b = 10.336 (2) Å | µ = 1.76 mm−1 |
c = 22.160 (4) Å | T = 294 K |
β = 98.81 (3)° | Block, yellow |
V = 2512.9 (8) Å3 | 0.24 × 0.20 × 0.12 mm |
Z = 4 |
Bruker SMART APEX CCD diffractometer | 4431 independent reflections |
Radiation source: fine-focus sealed tube | 2007 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.080 |
φ and ω scans | θmax = 25.0°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −8→13 |
Tmin = 0.628, Tmax = 0.810 | k = −12→11 |
12656 measured reflections | l = −26→25 |
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)] = 0.057 | H-atom parameters constrained |
wR(F2) = 0.163 | w = 1/[σ2(Fo2) + (0.0562P)2 + 2.7821P] where P = (Fo2 + 2Fc2)/3 |
S = 1.00 | (Δ/σ)max < 0.001 |
4431 reflections | Δρmax = 0.98 e Å−3 |
320 parameters | Δρmin = −0.82 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: 0.0027 (4) |
C25H22BrN3O5S | V = 2512.9 (8) Å3 |
Mr = 556.43 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.102 (2) Å | µ = 1.76 mm−1 |
b = 10.336 (2) Å | T = 294 K |
c = 22.160 (4) Å | 0.24 × 0.20 × 0.12 mm |
β = 98.81 (3)° |
Bruker SMART APEX CCD diffractometer | 4431 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2007 reflections with I > 2σ(I) |
Tmin = 0.628, Tmax = 0.810 | Rint = 0.080 |
12656 measured reflections |
R[F2 > 2σ(F2)] = 0.057 | 0 restraints |
wR(F2) = 0.163 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.98 e Å−3 |
4431 reflections | Δρmin = −0.82 e Å−3 |
320 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 | ||
Br1 | −0.02396 (8) | −0.56145 (7) | 0.12388 (5) | 0.1174 (5) | |
S1 | −0.05698 (13) | 0.05809 (14) | 0.13190 (8) | 0.0487 (4) | |
N1 | 0.3100 (4) | 0.3198 (4) | 0.0051 (2) | 0.0395 (11) | |
N2 | 0.4162 (4) | 0.4909 (4) | −0.1195 (2) | 0.0452 (12) | |
N3 | 0.3891 (4) | 0.5927 (4) | −0.0811 (2) | 0.0417 (12) | |
O1 | −0.1268 (4) | 0.1008 (4) | 0.1771 (2) | 0.0718 (13) | |
O2 | −0.0793 (3) | 0.1107 (4) | 0.07154 (18) | 0.0615 (12) | |
O3 | 0.0813 (3) | 0.0930 (3) | 0.16212 (16) | 0.0422 (9) | |
O4 | 0.2066 (3) | −0.1252 (3) | 0.19075 (17) | 0.0508 (10) | |
O5 | 0.4261 (3) | 0.2660 (3) | −0.11424 (18) | 0.0584 (11) | |
C1 | −0.0754 (5) | −0.1852 (6) | 0.1783 (3) | 0.0611 (18) | |
H1 | −0.0927 | −0.1440 | 0.2133 | 0.073* | |
C2 | −0.0685 (6) | −0.3191 (7) | 0.1770 (4) | 0.070 (2) | |
H2 | −0.0824 | −0.3682 | 0.2104 | 0.084* | |
C3 | −0.0402 (6) | −0.3780 (7) | 0.1246 (4) | 0.071 (2) | |
C4 | −0.0228 (6) | −0.3070 (7) | 0.0741 (4) | 0.069 (2) | |
H4 | −0.0055 | −0.3483 | 0.0392 | 0.083* | |
C5 | −0.0314 (5) | −0.1730 (6) | 0.0759 (3) | 0.0566 (17) | |
H5 | −0.0200 | −0.1240 | 0.0420 | 0.068* | |
C6 | −0.0571 (5) | −0.1124 (5) | 0.1284 (3) | 0.0449 (15) | |
C7 | 0.1760 (4) | 0.0594 (5) | 0.1284 (2) | 0.0356 (13) | |
C8 | 0.2399 (4) | −0.0569 (5) | 0.1435 (2) | 0.0370 (13) | |
C9 | 0.3316 (5) | −0.0897 (5) | 0.1096 (3) | 0.0421 (14) | |
H9 | 0.3750 | −0.1663 | 0.1178 | 0.050* | |
C10 | 0.3579 (5) | −0.0081 (5) | 0.0636 (3) | 0.0449 (15) | |
H10 | 0.4177 | −0.0331 | 0.0408 | 0.054* | |
C11 | 0.2986 (4) | 0.1100 (5) | 0.0501 (2) | 0.0379 (13) | |
C12 | 0.2050 (5) | 0.1420 (5) | 0.0842 (2) | 0.0388 (14) | |
H12 | 0.1628 | 0.2195 | 0.0767 | 0.047* | |
C13 | 0.2697 (5) | −0.2459 (5) | 0.2063 (3) | 0.0636 (18) | |
H13A | 0.2586 | −0.3022 | 0.1714 | 0.095* | |
H13B | 0.2374 | −0.2863 | 0.2394 | 0.095* | |
H13C | 0.3551 | −0.2292 | 0.2184 | 0.095* | |
C14 | 0.3353 (5) | 0.1982 (5) | 0.0048 (3) | 0.0429 (14) | |
H14 | 0.3779 | 0.1660 | −0.0250 | 0.052* | |
C15 | 0.3472 (4) | 0.4037 (5) | −0.0382 (2) | 0.0361 (13) | |
C16 | 0.3973 (5) | 0.3721 (5) | −0.0931 (3) | 0.0403 (14) | |
C17 | 0.3399 (5) | 0.5359 (5) | −0.0341 (2) | 0.0406 (14) | |
C18 | 0.2903 (5) | 0.6155 (5) | 0.0127 (3) | 0.0573 (17) | |
H18A | 0.2546 | 0.5597 | 0.0397 | 0.086* | |
H18B | 0.2293 | 0.6736 | −0.0072 | 0.086* | |
H18C | 0.3550 | 0.6645 | 0.0357 | 0.086* | |
C19 | 0.3517 (6) | 0.7179 (5) | −0.1087 (3) | 0.0663 (19) | |
H19A | 0.2817 | 0.7063 | −0.1394 | 0.099* | |
H19B | 0.4173 | 0.7539 | −0.1269 | 0.099* | |
H19C | 0.3317 | 0.7757 | −0.0778 | 0.099* | |
C20 | 0.4861 (5) | 0.5129 (5) | −0.1677 (3) | 0.0415 (14) | |
C21 | 0.4518 (5) | 0.4494 (5) | −0.2229 (3) | 0.0518 (16) | |
H21 | 0.3847 | 0.3944 | −0.2280 | 0.062* | |
C22 | 0.5180 (6) | 0.4683 (6) | −0.2703 (3) | 0.0634 (19) | |
H22 | 0.4958 | 0.4249 | −0.3071 | 0.076* | |
C23 | 0.6173 (7) | 0.5514 (7) | −0.2633 (3) | 0.074 (2) | |
H23 | 0.6601 | 0.5658 | −0.2957 | 0.089* | |
C24 | 0.6519 (6) | 0.6123 (6) | −0.2083 (3) | 0.0669 (19) | |
H24 | 0.7196 | 0.6664 | −0.2034 | 0.080* | |
C25 | 0.5879 (5) | 0.5945 (5) | −0.1599 (3) | 0.0543 (16) | |
H25 | 0.6121 | 0.6362 | −0.1229 | 0.065* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.1074 (7) | 0.0431 (5) | 0.1895 (12) | 0.0027 (4) | −0.0163 (6) | −0.0076 (5) |
S1 | 0.0404 (9) | 0.0425 (8) | 0.0666 (12) | 0.0128 (7) | 0.0188 (8) | 0.0081 (8) |
N1 | 0.038 (3) | 0.042 (3) | 0.040 (3) | −0.002 (2) | 0.007 (2) | 0.008 (2) |
N2 | 0.054 (3) | 0.035 (3) | 0.053 (3) | 0.006 (2) | 0.027 (3) | 0.001 (2) |
N3 | 0.050 (3) | 0.031 (3) | 0.046 (3) | 0.008 (2) | 0.013 (2) | 0.005 (2) |
O1 | 0.063 (3) | 0.065 (3) | 0.099 (4) | 0.025 (2) | 0.048 (3) | 0.002 (3) |
O2 | 0.057 (3) | 0.067 (3) | 0.060 (3) | 0.015 (2) | 0.006 (2) | 0.032 (2) |
O3 | 0.041 (2) | 0.037 (2) | 0.052 (3) | 0.0062 (16) | 0.0158 (18) | −0.0046 (18) |
O4 | 0.051 (2) | 0.047 (2) | 0.054 (3) | 0.0093 (18) | 0.010 (2) | 0.016 (2) |
O5 | 0.074 (3) | 0.039 (2) | 0.068 (3) | 0.006 (2) | 0.031 (2) | −0.004 (2) |
C1 | 0.058 (4) | 0.056 (4) | 0.073 (5) | 0.000 (3) | 0.020 (4) | 0.008 (4) |
C2 | 0.062 (5) | 0.053 (5) | 0.093 (6) | −0.006 (3) | 0.005 (4) | 0.027 (4) |
C3 | 0.049 (4) | 0.049 (4) | 0.107 (7) | 0.000 (3) | −0.012 (4) | −0.004 (5) |
C4 | 0.060 (5) | 0.061 (5) | 0.081 (6) | 0.007 (3) | −0.007 (4) | −0.021 (4) |
C5 | 0.046 (4) | 0.064 (5) | 0.055 (5) | 0.001 (3) | −0.008 (3) | −0.001 (4) |
C6 | 0.039 (3) | 0.038 (3) | 0.057 (4) | 0.001 (3) | 0.006 (3) | 0.007 (3) |
C7 | 0.039 (3) | 0.029 (3) | 0.039 (3) | 0.006 (2) | 0.005 (3) | −0.001 (3) |
C8 | 0.036 (3) | 0.031 (3) | 0.043 (4) | −0.001 (2) | 0.003 (3) | 0.005 (3) |
C9 | 0.039 (3) | 0.029 (3) | 0.057 (4) | 0.009 (2) | 0.003 (3) | −0.004 (3) |
C10 | 0.041 (3) | 0.042 (3) | 0.056 (4) | 0.007 (3) | 0.019 (3) | −0.001 (3) |
C11 | 0.034 (3) | 0.037 (3) | 0.044 (4) | −0.001 (2) | 0.009 (3) | 0.001 (3) |
C12 | 0.040 (3) | 0.028 (3) | 0.047 (4) | 0.003 (2) | 0.004 (3) | 0.000 (3) |
C13 | 0.069 (4) | 0.045 (4) | 0.076 (5) | 0.014 (3) | 0.009 (3) | 0.020 (4) |
C14 | 0.040 (4) | 0.044 (3) | 0.048 (4) | 0.003 (3) | 0.017 (3) | 0.002 (3) |
C15 | 0.030 (3) | 0.035 (3) | 0.044 (4) | 0.005 (2) | 0.007 (3) | −0.001 (3) |
C16 | 0.039 (3) | 0.034 (3) | 0.049 (4) | 0.002 (3) | 0.010 (3) | 0.003 (3) |
C17 | 0.041 (3) | 0.040 (3) | 0.040 (4) | 0.004 (3) | 0.003 (3) | 0.001 (3) |
C18 | 0.066 (4) | 0.048 (4) | 0.061 (4) | 0.008 (3) | 0.016 (3) | −0.001 (3) |
C19 | 0.085 (5) | 0.041 (4) | 0.078 (5) | 0.018 (3) | 0.029 (4) | 0.016 (3) |
C20 | 0.043 (4) | 0.042 (3) | 0.040 (4) | 0.008 (3) | 0.009 (3) | 0.007 (3) |
C21 | 0.052 (4) | 0.056 (4) | 0.048 (4) | 0.011 (3) | 0.009 (3) | 0.004 (3) |
C22 | 0.074 (5) | 0.077 (5) | 0.040 (4) | 0.028 (4) | 0.010 (4) | 0.004 (4) |
C23 | 0.082 (5) | 0.089 (5) | 0.061 (5) | 0.024 (5) | 0.040 (4) | 0.031 (5) |
C24 | 0.060 (4) | 0.074 (5) | 0.071 (5) | −0.003 (3) | 0.023 (4) | 0.012 (4) |
C25 | 0.057 (4) | 0.054 (4) | 0.054 (4) | −0.003 (3) | 0.016 (3) | 0.004 (3) |
Br1—C3 | 1.905 (7) | C9—H9 | 0.9300 |
S1—O1 | 1.427 (4) | C10—C11 | 1.398 (7) |
S1—O2 | 1.430 (4) | C10—H10 | 0.9300 |
S1—O3 | 1.619 (4) | C11—C12 | 1.415 (7) |
S1—C6 | 1.764 (6) | C11—C14 | 1.461 (7) |
N1—C14 | 1.287 (6) | C12—H12 | 0.9300 |
N1—C15 | 1.403 (6) | C13—H13A | 0.9600 |
N2—C16 | 1.390 (6) | C13—H13B | 0.9600 |
N2—N3 | 1.414 (6) | C13—H13C | 0.9600 |
N2—C20 | 1.433 (7) | C14—H14 | 0.9300 |
N3—C17 | 1.378 (6) | C15—C17 | 1.373 (7) |
N3—C19 | 1.464 (6) | C15—C16 | 1.449 (7) |
O3—C7 | 1.423 (6) | C17—C18 | 1.495 (7) |
O4—C8 | 1.359 (6) | C18—H18A | 0.9600 |
O4—C13 | 1.446 (6) | C18—H18B | 0.9600 |
O5—C16 | 1.253 (6) | C18—H18C | 0.9600 |
C1—C6 | 1.378 (8) | C19—H19A | 0.9600 |
C1—C2 | 1.386 (8) | C19—H19B | 0.9600 |
C1—H1 | 0.9300 | C19—H19C | 0.9600 |
C2—C3 | 1.389 (9) | C20—C21 | 1.388 (7) |
C2—H2 | 0.9300 | C20—C25 | 1.399 (7) |
C3—C4 | 1.375 (9) | C21—C22 | 1.386 (8) |
C4—C5 | 1.389 (8) | C21—H21 | 0.9300 |
C4—H4 | 0.9300 | C22—C23 | 1.387 (9) |
C5—C6 | 1.388 (8) | C22—H22 | 0.9300 |
C5—H5 | 0.9300 | C23—C24 | 1.374 (9) |
C7—C12 | 1.374 (7) | C23—H23 | 0.9300 |
C7—C8 | 1.410 (6) | C24—C25 | 1.386 (8) |
C8—C9 | 1.397 (7) | C24—H24 | 0.9300 |
C9—C10 | 1.388 (7) | C25—H25 | 0.9300 |
O1—S1—O2 | 120.2 (3) | C11—C12—H12 | 119.8 |
O1—S1—O3 | 102.9 (2) | O4—C13—H13A | 109.5 |
O2—S1—O3 | 108.7 (2) | O4—C13—H13B | 109.5 |
O1—S1—C6 | 110.1 (3) | H13A—C13—H13B | 109.5 |
O2—S1—C6 | 109.9 (3) | O4—C13—H13C | 109.5 |
O3—S1—C6 | 103.6 (2) | H13A—C13—H13C | 109.5 |
C14—N1—C15 | 120.8 (5) | H13B—C13—H13C | 109.5 |
C16—N2—N3 | 110.2 (4) | N1—C14—C11 | 121.4 (5) |
C16—N2—C20 | 126.0 (4) | N1—C14—H14 | 119.3 |
N3—N2—C20 | 121.4 (4) | C11—C14—H14 | 119.3 |
C17—N3—N2 | 106.4 (4) | C17—C15—N1 | 122.9 (5) |
C17—N3—C19 | 124.9 (4) | C17—C15—C16 | 108.3 (5) |
N2—N3—C19 | 118.6 (4) | N1—C15—C16 | 128.7 (4) |
C7—O3—S1 | 117.3 (3) | O5—C16—N2 | 123.5 (5) |
C8—O4—C13 | 116.9 (4) | O5—C16—C15 | 131.6 (5) |
C6—C1—C2 | 120.9 (7) | N2—C16—C15 | 104.8 (4) |
C6—C1—H1 | 119.6 | C15—C17—N3 | 109.9 (5) |
C2—C1—H1 | 119.6 | C15—C17—C18 | 128.7 (5) |
C1—C2—C3 | 118.4 (7) | N3—C17—C18 | 121.4 (5) |
C1—C2—H2 | 120.8 | C17—C18—H18A | 109.5 |
C3—C2—H2 | 120.8 | C17—C18—H18B | 109.5 |
C4—C3—C2 | 121.5 (7) | H18A—C18—H18B | 109.5 |
C4—C3—Br1 | 119.9 (6) | C17—C18—H18C | 109.5 |
C2—C3—Br1 | 118.5 (6) | H18A—C18—H18C | 109.5 |
C3—C4—C5 | 119.3 (7) | H18B—C18—H18C | 109.5 |
C3—C4—H4 | 120.3 | N3—C19—H19A | 109.5 |
C5—C4—H4 | 120.3 | N3—C19—H19B | 109.5 |
C6—C5—C4 | 119.8 (6) | H19A—C19—H19B | 109.5 |
C6—C5—H5 | 120.1 | N3—C19—H19C | 109.5 |
C4—C5—H5 | 120.1 | H19A—C19—H19C | 109.5 |
C1—C6—C5 | 120.0 (6) | H19B—C19—H19C | 109.5 |
C1—C6—S1 | 120.6 (5) | C21—C20—C25 | 120.1 (5) |
C5—C6—S1 | 119.3 (5) | C21—C20—N2 | 118.4 (5) |
C12—C7—C8 | 122.4 (5) | C25—C20—N2 | 121.5 (5) |
C12—C7—O3 | 119.6 (4) | C22—C21—C20 | 119.7 (6) |
C8—C7—O3 | 117.9 (4) | C22—C21—H21 | 120.2 |
O4—C8—C9 | 126.5 (5) | C20—C21—H21 | 120.2 |
O4—C8—C7 | 116.1 (5) | C21—C22—C23 | 120.5 (6) |
C9—C8—C7 | 117.4 (5) | C21—C22—H22 | 119.7 |
C10—C9—C8 | 120.0 (5) | C23—C22—H22 | 119.7 |
C10—C9—H9 | 120.0 | C24—C23—C22 | 119.4 (6) |
C8—C9—H9 | 120.0 | C24—C23—H23 | 120.3 |
C9—C10—C11 | 122.9 (5) | C22—C23—H23 | 120.3 |
C9—C10—H10 | 118.6 | C23—C24—C25 | 121.3 (6) |
C11—C10—H10 | 118.6 | C23—C24—H24 | 119.4 |
C10—C11—C12 | 116.8 (5) | C25—C24—H24 | 119.4 |
C10—C11—C14 | 121.4 (5) | C24—C25—C20 | 119.0 (6) |
C12—C11—C14 | 121.8 (5) | C24—C25—H25 | 120.5 |
C7—C12—C11 | 120.4 (5) | C20—C25—H25 | 120.5 |
C7—C12—H12 | 119.8 | ||
C16—N2—N3—C17 | −6.8 (5) | O3—C7—C12—C11 | −179.8 (4) |
C20—N2—N3—C17 | −170.1 (5) | C10—C11—C12—C7 | 0.3 (7) |
C16—N2—N3—C19 | −154.0 (5) | C14—C11—C12—C7 | −177.2 (5) |
C20—N2—N3—C19 | 42.7 (7) | C15—N1—C14—C11 | 179.2 (4) |
O1—S1—O3—C7 | 178.7 (3) | C10—C11—C14—N1 | −158.1 (5) |
O2—S1—O3—C7 | −52.8 (4) | C12—C11—C14—N1 | 19.3 (8) |
C6—S1—O3—C7 | 64.0 (4) | C14—N1—C15—C17 | −169.3 (5) |
C6—C1—C2—C3 | 1.2 (10) | C14—N1—C15—C16 | 11.0 (8) |
C1—C2—C3—C4 | −1.9 (10) | N3—N2—C16—O5 | −172.4 (5) |
C1—C2—C3—Br1 | 177.4 (5) | C20—N2—C16—O5 | −10.1 (9) |
C2—C3—C4—C5 | 1.2 (10) | N3—N2—C16—C15 | 4.5 (5) |
Br1—C3—C4—C5 | −178.1 (4) | C20—N2—C16—C15 | 166.9 (5) |
C3—C4—C5—C6 | 0.2 (9) | C17—C15—C16—O5 | 175.9 (6) |
C2—C1—C6—C5 | 0.1 (9) | N1—C15—C16—O5 | −4.3 (9) |
C2—C1—C6—S1 | −176.2 (5) | C17—C15—C16—N2 | −0.6 (6) |
C4—C5—C6—C1 | −0.8 (8) | N1—C15—C16—N2 | 179.1 (5) |
C4—C5—C6—S1 | 175.5 (4) | N1—C15—C17—N3 | 176.6 (4) |
O1—S1—C6—C1 | −25.1 (6) | C16—C15—C17—N3 | −3.6 (6) |
O2—S1—C6—C1 | −159.7 (4) | N1—C15—C17—C18 | −2.3 (9) |
O3—S1—C6—C1 | 84.3 (5) | C16—C15—C17—C18 | 177.5 (5) |
O1—S1—C6—C5 | 158.6 (4) | N2—N3—C17—C15 | 6.3 (6) |
O2—S1—C6—C5 | 24.0 (5) | C19—N3—C17—C15 | 150.8 (5) |
O3—S1—C6—C5 | −91.9 (5) | N2—N3—C17—C18 | −174.7 (5) |
S1—O3—C7—C12 | 84.6 (5) | C19—N3—C17—C18 | −30.1 (8) |
S1—O3—C7—C8 | −97.6 (5) | C16—N2—C20—C21 | 59.0 (7) |
C13—O4—C8—C9 | −2.1 (7) | N3—N2—C20—C21 | −140.4 (5) |
C13—O4—C8—C7 | 179.0 (4) | C16—N2—C20—C25 | −120.0 (6) |
C12—C7—C8—O4 | 175.9 (5) | N3—N2—C20—C25 | 40.6 (7) |
O3—C7—C8—O4 | −1.8 (7) | C25—C20—C21—C22 | −0.7 (8) |
C12—C7—C8—C9 | −3.1 (7) | N2—C20—C21—C22 | −179.7 (5) |
O3—C7—C8—C9 | 179.2 (4) | C20—C21—C22—C23 | −0.8 (9) |
O4—C8—C9—C10 | −178.0 (5) | C21—C22—C23—C24 | 1.9 (9) |
C7—C8—C9—C10 | 0.9 (7) | C22—C23—C24—C25 | −1.5 (10) |
C8—C9—C10—C11 | 1.9 (8) | C23—C24—C25—C20 | 0.0 (9) |
C9—C10—C11—C12 | −2.5 (8) | C21—C20—C25—C24 | 1.1 (8) |
C9—C10—C11—C14 | 175.0 (5) | N2—C20—C25—C24 | −179.9 (5) |
C8—C7—C12—C11 | 2.5 (8) |
D—H···A | D—H | H···A | D···A | D—H···A |
C14—H14···O5 | 0.93 | 2.36 | 3.046 (7) | 130 |
C9—H9···O5i | 0.93 | 2.45 | 3.238 (6) | 143 |
Symmetry code: (i) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C25H22BrN3O5S |
Mr | 556.43 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 294 |
a, b, c (Å) | 11.102 (2), 10.336 (2), 22.160 (4) |
β (°) | 98.81 (3) |
V (Å3) | 2512.9 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.76 |
Crystal size (mm) | 0.24 × 0.20 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.628, 0.810 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12656, 4431, 2007 |
Rint | 0.080 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.057, 0.163, 1.00 |
No. of reflections | 4431 |
No. of parameters | 320 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.98, −0.82 |
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 |
C14—H14···O5 | 0.93 | 2.36 | 3.046 (7) | 130 |
C9—H9···O5i | 0.93 | 2.45 | 3.238 (6) | 143 |
Symmetry code: (i) −x+1, −y, −z. |
References
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans 2, pp. S1–19. CrossRef Web of Science Google Scholar
Bruker (1999). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Chen, X. & Yu, M. (2006). Acta Cryst. E62, o4592–o4593. Web of Science CSD CrossRef IUCr Journals Google Scholar
Santos, M. L. P., Bagatin, I. A., Pereira, E. M. & Ferreira, A. M. D. C. (2001). J. Chem. Soc. Dalton Trans. pp. 838–844. Web of Science CrossRef Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Zhang, Q.-Z., Zhao, Y.-L., Chen, X. & Yu, M. (2006). Acta Cryst. E62, o5252–o5254. Web of Science CSD CrossRef IUCr Journals Google Scholar
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 steady growth of interest in the synthesis, structure, and reactivity of Schiff bases due to their potentially biological activities such as protein and enzyme mimics (Santos et al., 2001). Among the large number of 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 some of them, such as (E)-5-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro- 1H-pyrazol-4-yliminomethyl)-2-methoxyphenyl benzenesulfonate (Chen & Yu, 2006) and (E)-4-(2-(4-Chlorobenzyloxy)benzylideneamino) -2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one (Zhang et al., 2006) have been reported.
Structural information is useful when investigating the coordination properties of Schiff bases functioning as ligands. We report here the synthesis and molecular structure of the title Schiff base compound, (I), (Fig. 1)
In the title molecule (Fig. 1), bond lengths and angles are within normal ranges (Allen et al., 1987). The pyrazolone ring (C15—C17/N1—N3/O5) is almost planar, with an r.m.s. deviation for fitted atoms of 0.0331 Å. It makes a dihedral angle of 51.63 (17)° with the attached phenyl ring (C20—C25). The central benzene ring (C7—C12/C14/O3/O4) is nearly planar, with an r.m.s. deviation for fitted atoms of 0.0371 Å. This group makes dihedral angles of 32.02 (14)°, 37.49 (18)° and 80.52 (13)°, respectively, with the the pyrazolone ring (C15—C17/N1—N3/O5), the bromobenzene ring (C1—C6) and the terminal phenyl ring (C20—C25).
An intramolecular C14—H14···O5═C16 hydrogen bond is found in (I) (Table 1), which helps to stabilize the conformation of the molecule. Packing is stabilised by weak, non-classical intermolecular C9—H9···O5═C16 hydrogen bonds that form inversion related dimers (Table 1, Fig. 2).