organic compounds
N-Benzoyl-N-(3-methylphenyl)-O-[2-(2-nitrophenyl)acetyl]hydroxylamine
aInstitute of Medicinal Chemistry School of Pharmacy, Lanzhou University, Lanzhou 730000, Gansu Province, People's Republic of China
*Correspondence e-mail: hed@lzu.edu.cn
In the title molecule, C22H18N2O5, the nitro-substituted ring makes a dihedral angle of 81.9 (1)° with the benzoyl ring and a dihedral angle of 12.1 (1)° with the methyl-substituted ring.
Related literature
For applications, see: Zeng et al. (2003). For the preparation, see: Ayyangark et al. (1986).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2009) ; cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536811025864/ld2012sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811025864/ld2012Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811025864/ld2012Isup3.cml
The title compound, C22H18N2O5 was prepared according to the method described by Ayyangark et al. (1986). Crystals of (I) suitable for single-crystal X-ray analysis were grown by slow evaporation of a solution in dichloromethane-methanol (1:3 v/v).
The methyl hydrogen atoms were positioned geometrically (AFIX 137) and refined using a riding/rotating model, with Uiso = 1.5 times Ueq(C). Other H-atoms were positioned geometrically and allowed to ride on their parent atoms, with C—H=0.95 Å and Uiso = 1.2 times Ueq(C).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound with the atomic numbering and 50% probability displacement dllipsoids. H atoms are shown as small spheres of arbitrary radius. |
C22H18N2O5 | F(000) = 816 |
Mr = 390.38 | Dx = 1.342 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2435 reflections |
a = 16.34 (2) Å | θ = 2.7–22.3° |
b = 8.459 (10) Å | µ = 0.10 mm−1 |
c = 14.862 (18) Å | T = 296 K |
β = 109.869 (11)° | Block, yellow |
V = 1932 (4) Å3 | 0.25 × 0.24 × 0.21 mm |
Z = 4 |
Bruker APEXII CCD diffractometer | 3591 independent reflections |
Radiation source: fine-focus sealed tube | 2242 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.047 |
ϕ and ω scans | θmax = 25.5°, θmin = 2.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −19→15 |
Tmin = 0.976, Tmax = 0.980 | k = −10→10 |
10929 measured reflections | l = −18→18 |
Refinement on F2 | 0 restraints |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.050 | w = 1/[σ2(Fo2) + (0.0508P)2 + 0.3323P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.123 | (Δ/σ)max < 0.001 |
S = 1.00 | Δρmax = 0.18 e Å−3 |
3591 reflections | Δρmin = −0.21 e Å−3 |
263 parameters |
C22H18N2O5 | V = 1932 (4) Å3 |
Mr = 390.38 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 16.34 (2) Å | µ = 0.10 mm−1 |
b = 8.459 (10) Å | T = 296 K |
c = 14.862 (18) Å | 0.25 × 0.24 × 0.21 mm |
β = 109.869 (11)° |
Bruker APEXII CCD diffractometer | 3591 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2242 reflections with I > 2σ(I) |
Tmin = 0.976, Tmax = 0.980 | Rint = 0.047 |
10929 measured reflections |
R[F2 > 2σ(F2)] = 0.050 | 0 restraints |
wR(F2) = 0.123 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.18 e Å−3 |
3591 reflections | Δρmin = −0.21 e Å−3 |
263 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 | 0.09639 (15) | 0.0309 (3) | 1.13097 (16) | 0.0513 (6) | |
C2 | 0.01484 (17) | −0.0114 (4) | 1.13187 (18) | 0.0696 (8) | |
H2 | −0.0264 | 0.0653 | 1.1303 | 0.084* | |
C3 | −0.0036 (2) | −0.1670 (5) | 1.1352 (2) | 0.0857 (10) | |
H3 | −0.0583 | −0.1977 | 1.1349 | 0.103* | |
C4 | 0.0570 (2) | −0.2781 (4) | 1.1388 (2) | 0.0910 (10) | |
H4 | 0.0439 | −0.3846 | 1.1412 | 0.109* | |
C5 | 0.13830 (19) | −0.2336 (3) | 1.13877 (19) | 0.0710 (8) | |
H5 | 0.1792 | −0.3114 | 1.1414 | 0.085* | |
C6 | 0.16037 (15) | −0.0779 (3) | 1.13499 (15) | 0.0495 (6) | |
C7 | 0.25040 (15) | −0.0379 (3) | 1.13676 (16) | 0.0527 (6) | |
H7A | 0.2704 | 0.0563 | 1.1752 | 0.063* | |
H7B | 0.2895 | −0.1237 | 1.1668 | 0.063* | |
C8 | 0.25400 (15) | −0.0102 (3) | 1.03894 (17) | 0.0431 (5) | |
C9 | 0.38632 (13) | −0.0232 (3) | 0.93782 (15) | 0.0375 (5) | |
C10 | 0.39160 (13) | −0.0260 (2) | 0.83950 (14) | 0.0357 (5) | |
C11 | 0.32888 (15) | 0.0383 (3) | 0.76029 (15) | 0.0481 (6) | |
H11 | 0.2829 | 0.0956 | 0.7674 | 0.058* | |
C12 | 0.33474 (18) | 0.0170 (3) | 0.67094 (16) | 0.0620 (7) | |
H12 | 0.2928 | 0.0610 | 0.6178 | 0.074* | |
C13 | 0.40156 (19) | −0.0683 (3) | 0.65957 (18) | 0.0655 (8) | |
H13 | 0.4049 | −0.0825 | 0.5988 | 0.079* | |
C14 | 0.46365 (18) | −0.1331 (3) | 0.73773 (19) | 0.0641 (7) | |
H14 | 0.5092 | −0.1912 | 0.7302 | 0.077* | |
C15 | 0.45842 (15) | −0.1119 (3) | 0.82721 (16) | 0.0485 (6) | |
H15 | 0.5006 | −0.1562 | 0.8801 | 0.058* | |
C16 | 0.32922 (14) | 0.2572 (2) | 0.92940 (13) | 0.0374 (5) | |
C17 | 0.25051 (15) | 0.3294 (3) | 0.91822 (15) | 0.0440 (5) | |
H17 | 0.2056 | 0.2701 | 0.9264 | 0.053* | |
C18 | 0.23706 (15) | 0.4868 (3) | 0.89531 (15) | 0.0452 (6) | |
C19 | 0.30418 (17) | 0.5693 (3) | 0.88050 (16) | 0.0521 (6) | |
H19 | 0.2965 | 0.6755 | 0.8634 | 0.063* | |
C20 | 0.38237 (16) | 0.4971 (3) | 0.89061 (16) | 0.0531 (6) | |
H20 | 0.4264 | 0.5551 | 0.8797 | 0.064* | |
C21 | 0.39630 (15) | 0.3411 (3) | 0.91646 (15) | 0.0442 (6) | |
H21 | 0.4497 | 0.2935 | 0.9250 | 0.053* | |
C22 | 0.15279 (17) | 0.5646 (3) | 0.8891 (2) | 0.0673 (7) | |
H22A | 0.1062 | 0.5181 | 0.8377 | 0.101* | |
H22B | 0.1560 | 0.6756 | 0.8772 | 0.101* | |
H22C | 0.1422 | 0.5498 | 0.9482 | 0.101* | |
N1 | 0.33979 (12) | 0.0969 (2) | 0.95831 (12) | 0.0430 (5) | |
N2 | 0.11232 (16) | 0.1993 (3) | 1.12655 (17) | 0.0713 (6) | |
O1 | 0.20433 (11) | −0.0556 (2) | 0.96539 (12) | 0.0599 (5) | |
O2 | 0.32692 (9) | 0.07666 (17) | 1.04773 (9) | 0.0445 (4) | |
O3 | 0.41541 (10) | −0.12978 (17) | 0.99348 (10) | 0.0489 (4) | |
O4 | 0.16263 (14) | 0.2435 (2) | 1.08809 (14) | 0.0828 (6) | |
O5 | 0.0756 (2) | 0.2889 (3) | 1.1631 (2) | 0.1459 (12) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0461 (15) | 0.0671 (17) | 0.0454 (14) | −0.0063 (13) | 0.0217 (12) | 0.0015 (12) |
C2 | 0.0453 (16) | 0.102 (2) | 0.0651 (18) | −0.0020 (16) | 0.0237 (13) | 0.0064 (16) |
C3 | 0.053 (2) | 0.121 (3) | 0.086 (2) | −0.034 (2) | 0.0293 (17) | 0.001 (2) |
C4 | 0.088 (3) | 0.087 (3) | 0.106 (3) | −0.032 (2) | 0.043 (2) | 0.0033 (19) |
C5 | 0.073 (2) | 0.0679 (19) | 0.084 (2) | −0.0031 (16) | 0.0420 (17) | 0.0096 (15) |
C6 | 0.0469 (15) | 0.0653 (17) | 0.0411 (13) | −0.0061 (13) | 0.0213 (11) | 0.0053 (11) |
C7 | 0.0464 (14) | 0.0754 (17) | 0.0431 (13) | 0.0019 (13) | 0.0239 (12) | 0.0127 (12) |
C8 | 0.0396 (13) | 0.0489 (14) | 0.0464 (14) | −0.0004 (11) | 0.0218 (12) | 0.0058 (11) |
C9 | 0.0327 (12) | 0.0396 (12) | 0.0414 (12) | −0.0078 (10) | 0.0144 (10) | −0.0002 (10) |
C10 | 0.0359 (12) | 0.0376 (12) | 0.0356 (11) | −0.0061 (10) | 0.0149 (10) | 0.0008 (10) |
C11 | 0.0468 (14) | 0.0554 (15) | 0.0425 (13) | 0.0050 (11) | 0.0158 (12) | 0.0007 (11) |
C12 | 0.0725 (18) | 0.0729 (18) | 0.0371 (14) | 0.0067 (15) | 0.0140 (13) | 0.0031 (12) |
C13 | 0.0731 (19) | 0.087 (2) | 0.0455 (15) | 0.0037 (16) | 0.0315 (15) | −0.0020 (14) |
C14 | 0.0576 (17) | 0.085 (2) | 0.0607 (17) | 0.0100 (15) | 0.0339 (15) | −0.0015 (15) |
C15 | 0.0443 (14) | 0.0586 (15) | 0.0444 (13) | 0.0007 (12) | 0.0175 (11) | 0.0007 (11) |
C16 | 0.0426 (13) | 0.0394 (12) | 0.0330 (11) | −0.0025 (10) | 0.0166 (10) | −0.0013 (9) |
C17 | 0.0413 (14) | 0.0485 (14) | 0.0446 (13) | −0.0065 (11) | 0.0177 (11) | −0.0041 (11) |
C18 | 0.0514 (14) | 0.0436 (14) | 0.0395 (13) | 0.0020 (12) | 0.0140 (11) | −0.0055 (10) |
C19 | 0.0669 (18) | 0.0396 (13) | 0.0460 (14) | −0.0043 (13) | 0.0141 (13) | −0.0030 (11) |
C20 | 0.0577 (16) | 0.0493 (15) | 0.0561 (15) | −0.0172 (13) | 0.0241 (12) | −0.0019 (12) |
C21 | 0.0407 (13) | 0.0516 (14) | 0.0432 (13) | −0.0041 (11) | 0.0182 (11) | −0.0022 (11) |
C22 | 0.0662 (18) | 0.0581 (17) | 0.0765 (19) | 0.0138 (14) | 0.0229 (15) | −0.0032 (14) |
N1 | 0.0497 (11) | 0.0489 (12) | 0.0410 (10) | 0.0054 (9) | 0.0291 (9) | 0.0080 (9) |
N2 | 0.0727 (16) | 0.0707 (17) | 0.0808 (17) | 0.0045 (14) | 0.0397 (14) | −0.0011 (13) |
O1 | 0.0552 (11) | 0.0786 (13) | 0.0482 (10) | −0.0193 (9) | 0.0205 (9) | −0.0073 (9) |
O2 | 0.0425 (9) | 0.0603 (10) | 0.0370 (8) | −0.0055 (8) | 0.0217 (7) | 0.0027 (7) |
O3 | 0.0581 (11) | 0.0457 (10) | 0.0421 (9) | 0.0055 (8) | 0.0159 (8) | 0.0084 (8) |
O4 | 0.0943 (15) | 0.0726 (13) | 0.0992 (15) | −0.0161 (12) | 0.0560 (13) | 0.0011 (11) |
O5 | 0.182 (3) | 0.0902 (19) | 0.224 (3) | 0.0186 (18) | 0.144 (3) | −0.0170 (19) |
C1—C6 | 1.379 (3) | C12—H12 | 0.9300 |
C1—C2 | 1.385 (4) | C13—C14 | 1.370 (4) |
C1—N2 | 1.453 (4) | C13—H13 | 0.9300 |
C2—C3 | 1.355 (5) | C14—C15 | 1.373 (3) |
C2—H2 | 0.9300 | C14—H14 | 0.9300 |
C3—C4 | 1.353 (5) | C15—H15 | 0.9300 |
C3—H3 | 0.9300 | C16—C21 | 1.373 (3) |
C4—C5 | 1.380 (4) | C16—C17 | 1.382 (3) |
C4—H4 | 0.9300 | C16—N1 | 1.415 (3) |
C5—C6 | 1.372 (4) | C17—C18 | 1.373 (3) |
C5—H5 | 0.9300 | C17—H17 | 0.9300 |
C6—C7 | 1.501 (3) | C18—C19 | 1.380 (3) |
C7—C8 | 1.493 (3) | C18—C22 | 1.500 (4) |
C7—H7A | 0.9700 | C19—C20 | 1.378 (3) |
C7—H7B | 0.9700 | C19—H19 | 0.9300 |
C8—O1 | 1.182 (3) | C20—C21 | 1.371 (3) |
C8—O2 | 1.368 (3) | C20—H20 | 0.9300 |
C9—O3 | 1.206 (3) | C21—H21 | 0.9300 |
C9—N1 | 1.365 (3) | C22—H22A | 0.9600 |
C9—C10 | 1.493 (3) | C22—H22B | 0.9600 |
C10—C15 | 1.375 (3) | C22—H22C | 0.9600 |
C10—C11 | 1.383 (3) | N1—O2 | 1.425 (2) |
C11—C12 | 1.375 (3) | N2—O5 | 1.205 (3) |
C11—H11 | 0.9300 | N2—O4 | 1.209 (3) |
C12—C13 | 1.367 (4) | ||
C6—C1—C2 | 123.0 (3) | C12—C13—H13 | 120.0 |
C6—C1—N2 | 120.8 (2) | C14—C13—H13 | 120.0 |
C2—C1—N2 | 116.2 (2) | C13—C14—C15 | 119.8 (2) |
C3—C2—C1 | 118.6 (3) | C13—C14—H14 | 120.1 |
C3—C2—H2 | 120.7 | C15—C14—H14 | 120.1 |
C1—C2—H2 | 120.7 | C10—C15—C14 | 120.7 (2) |
C2—C3—C4 | 120.5 (3) | C10—C15—H15 | 119.6 |
C2—C3—H3 | 119.8 | C14—C15—H15 | 119.6 |
C4—C3—H3 | 119.8 | C21—C16—C17 | 120.6 (2) |
C3—C4—C5 | 120.2 (3) | C21—C16—N1 | 121.1 (2) |
C3—C4—H4 | 119.9 | C17—C16—N1 | 118.19 (19) |
C5—C4—H4 | 119.9 | C18—C17—C16 | 121.5 (2) |
C6—C5—C4 | 121.9 (3) | C18—C17—H17 | 119.3 |
C6—C5—H5 | 119.1 | C16—C17—H17 | 119.3 |
C4—C5—H5 | 119.1 | C17—C18—C19 | 117.5 (2) |
C5—C6—C1 | 115.9 (2) | C17—C18—C22 | 120.4 (2) |
C5—C6—C7 | 119.1 (2) | C19—C18—C22 | 122.1 (2) |
C1—C6—C7 | 125.0 (2) | C18—C19—C20 | 121.1 (2) |
C8—C7—C6 | 112.39 (19) | C18—C19—H19 | 119.4 |
C8—C7—H7A | 109.1 | C20—C19—H19 | 119.4 |
C6—C7—H7A | 109.1 | C21—C20—C19 | 121.1 (2) |
C8—C7—H7B | 109.1 | C21—C20—H20 | 119.4 |
C6—C7—H7B | 109.1 | C19—C20—H20 | 119.4 |
H7A—C7—H7B | 107.9 | C20—C21—C16 | 118.2 (2) |
O1—C8—O2 | 124.4 (2) | C20—C21—H21 | 120.9 |
O1—C8—C7 | 127.4 (2) | C16—C21—H21 | 120.9 |
O2—C8—C7 | 108.21 (19) | C18—C22—H22A | 109.5 |
O3—C9—N1 | 121.6 (2) | C18—C22—H22B | 109.5 |
O3—C9—C10 | 121.3 (2) | H22A—C22—H22B | 109.5 |
N1—C9—C10 | 116.88 (19) | C18—C22—H22C | 109.5 |
C15—C10—C11 | 119.2 (2) | H22A—C22—H22C | 109.5 |
C15—C10—C9 | 116.82 (19) | H22B—C22—H22C | 109.5 |
C11—C10—C9 | 123.7 (2) | C9—N1—C16 | 131.76 (17) |
C12—C11—C10 | 119.7 (2) | C9—N1—O2 | 112.86 (16) |
C12—C11—H11 | 120.1 | C16—N1—O2 | 110.92 (15) |
C10—C11—H11 | 120.1 | O5—N2—O4 | 122.8 (3) |
C13—C12—C11 | 120.6 (2) | O5—N2—C1 | 118.2 (2) |
C13—C12—H12 | 119.7 | O4—N2—C1 | 119.1 (2) |
C11—C12—H12 | 119.7 | C8—O2—N1 | 112.06 (16) |
C12—C13—C14 | 119.9 (2) | ||
C6—C1—C2—C3 | −1.2 (4) | C21—C16—C17—C18 | −0.9 (3) |
N2—C1—C2—C3 | 179.5 (2) | N1—C16—C17—C18 | 176.48 (19) |
C1—C2—C3—C4 | 0.9 (4) | C16—C17—C18—C19 | 2.2 (3) |
C2—C3—C4—C5 | −0.2 (5) | C16—C17—C18—C22 | −176.5 (2) |
C3—C4—C5—C6 | −0.1 (5) | C17—C18—C19—C20 | −1.5 (3) |
C4—C5—C6—C1 | −0.2 (4) | C22—C18—C19—C20 | 177.2 (2) |
C4—C5—C6—C7 | 179.1 (2) | C18—C19—C20—C21 | −0.5 (3) |
C2—C1—C6—C5 | 0.8 (3) | C19—C20—C21—C16 | 1.8 (3) |
N2—C1—C6—C5 | −179.9 (2) | C17—C16—C21—C20 | −1.1 (3) |
C2—C1—C6—C7 | −178.3 (2) | N1—C16—C21—C20 | −178.47 (19) |
N2—C1—C6—C7 | 1.0 (3) | O3—C9—N1—C16 | 150.7 (2) |
C5—C6—C7—C8 | 97.3 (3) | C10—C9—N1—C16 | −35.5 (3) |
C1—C6—C7—C8 | −83.5 (3) | O3—C9—N1—O2 | −2.9 (3) |
C6—C7—C8—O1 | −21.8 (4) | C10—C9—N1—O2 | 170.82 (16) |
C6—C7—C8—O2 | 159.1 (2) | C21—C16—N1—C9 | −35.1 (3) |
O3—C9—C10—C15 | −26.3 (3) | C17—C16—N1—C9 | 147.5 (2) |
N1—C9—C10—C15 | 159.93 (19) | C21—C16—N1—O2 | 118.89 (19) |
O3—C9—C10—C11 | 146.8 (2) | C17—C16—N1—O2 | −58.5 (2) |
N1—C9—C10—C11 | −26.9 (3) | C6—C1—N2—O5 | −148.5 (3) |
C15—C10—C11—C12 | −0.7 (3) | C2—C1—N2—O5 | 30.9 (4) |
C9—C10—C11—C12 | −173.7 (2) | C6—C1—N2—O4 | 30.3 (4) |
C10—C11—C12—C13 | 0.6 (4) | C2—C1—N2—O4 | −150.3 (2) |
C11—C12—C13—C14 | −0.2 (4) | O1—C8—O2—N1 | −4.2 (3) |
C12—C13—C14—C15 | 0.0 (4) | C7—C8—O2—N1 | 174.84 (16) |
C11—C10—C15—C14 | 0.5 (3) | C9—N1—O2—C8 | −87.7 (2) |
C9—C10—C15—C14 | 174.0 (2) | C16—N1—O2—C8 | 113.1 (2) |
C13—C14—C15—C10 | −0.2 (4) |
Experimental details
Crystal data | |
Chemical formula | C22H18N2O5 |
Mr | 390.38 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 16.34 (2), 8.459 (10), 14.862 (18) |
β (°) | 109.869 (11) |
V (Å3) | 1932 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.25 × 0.24 × 0.21 |
Data collection | |
Diffractometer | Bruker APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.976, 0.980 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10929, 3591, 2242 |
Rint | 0.047 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.050, 0.123, 1.00 |
No. of reflections | 3591 |
No. of parameters | 263 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.18, −0.21 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Acknowledgements
This work was supported by the Fundamental Research Funds for the Central Universities (lzujbky-2010–137).
References
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Hydroxamic acid derivatives have received considerable attention in recent years as the result of the discovery of their role in the biochemical toxicology of many drugs and other chemicals. Thus, these compounds continue to attract much attention as potential biological agents. The title molecule, C22H18N2O5, contains three branched chains with its centre placed at midpoint of the N. The phenyl ring C1—C6 makes a dihedral angle of 81.85 (8)° with the phenyl ring C10—C15 of benzoyl group, and 12.08 (8)° with the penyl ring C16—C21.