organic compounds
Methyl 2-[(E)-(4-nitrophenyl)hydrazono]-3-oxobutyrate
aCollege of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China, and bTechnology Center, Jiuquan Iron and Steel (Group) Co. Ltd., Jiayuguan 735100, People's Republic of China
*Correspondence e-mail: yhliuyzu@yahoo.com.cn
The molecule of the title compound, C11H11N3O5, exists as the E isomer as it is stabilized by an intramolecular hydrogen bond. Except for the methyl H atoms, all atoms lie in special positions on a mirror plane and form a large the methyl H atoms are disordered about the mirror plane. In the crystalline state, bifurcated intra- and intermolecular N—H⋯O hydrogen bonds and four intermolecular C—H⋯O hydrogen bonds link the molecules into large perfectly planar sheets. Along the c axis, the N—N bond center approaches the phenyl-ring centroids of its neighbouring molecules above and below to give π–π overlap (at a distance of ca 3.57 Å), thus fusing the molecules into a three-dimensional framework.
Related literature
For related literature, see: Bernstein et al. (1995); Lewis et al. (1999); Liu et al. (2007, 2008); Mague et al. (1997); Mahy et al. (1993); Serbutoviez et al. (1995); Thami et al. (1992); Wang et al. (2005).
Experimental
Crystal data
|
Refinement
|
Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2002); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
Supporting information
10.1107/S160053680802312X/cs2083sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053680802312X/cs2083Isup2.hkl
The title compound was synthesized according to literature procedure (Wang et al. 2005; Liu et al. 2008). Crystals suitable for X-ray diffraction were obtained by slow evaporation of a solution of the solid in dichloromethane at room temperature over a period of 6 d.
After their location in a difference map, all H atoms were fixed geometrically at ideal positions and allowed to ride on the parent C atoms, with C—H distances of 0.93 (aromatic) or 0.97 Å (methyl), and with Uiso(H) values of 1.2Ueq (C, N).
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C11H11N3O5 | Dx = 1.442 Mg m−3 |
Mr = 265.2 | Melting point: 400 K |
Orthorhombic, Pbcm | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2c 2b | Cell parameters from 1996 reflections |
a = 12.880 (3) Å | θ = 2.8–25.4° |
b = 14.299 (3) Å | µ = 0.12 mm−1 |
c = 6.6328 (14) Å | T = 296 K |
V = 1221.6 (5) Å3 | Block, yellow |
Z = 4 | 0.30 × 0.30 × 0.20 mm |
F(000) = 552 |
Bruker SMART 1000 CCD diffractometer | 1546 independent reflections |
Radiation source: fine-focus sealed tube | 968 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.041 |
Thin–slice ω scans | θmax = 27.6°, θmin = 1.6° |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −16→16 |
Tmin = 0.966, Tmax = 0.977 | k = −17→18 |
10245 measured reflections | l = −8→8 |
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)] = 0.042 | H-atom parameters constrained |
wR(F2) = 0.121 | w = 1/[σ2(Fo2) + (0.0497P)2 + 0.2977P] where P = (Fo2 + 2Fc2)/3 |
S = 1.03 | (Δ/σ)max < 0.001 |
1546 reflections | Δρmax = 0.20 e Å−3 |
118 parameters | Δρmin = −0.13 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: 0.0036 (9) |
C11H11N3O5 | V = 1221.6 (5) Å3 |
Mr = 265.2 | Z = 4 |
Orthorhombic, Pbcm | Mo Kα radiation |
a = 12.880 (3) Å | µ = 0.12 mm−1 |
b = 14.299 (3) Å | T = 296 K |
c = 6.6328 (14) Å | 0.30 × 0.30 × 0.20 mm |
Bruker SMART 1000 CCD diffractometer | 1546 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 968 reflections with I > 2σ(I) |
Tmin = 0.966, Tmax = 0.977 | Rint = 0.041 |
10245 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.121 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.20 e Å−3 |
1546 reflections | Δρmin = −0.13 e Å−3 |
118 parameters |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
O4 | 0.68298 (15) | 0.51128 (12) | 0.2500 | 0.0726 (6) | |
O3 | 1.00596 (16) | 0.52888 (14) | 0.2500 | 0.0896 (8) | |
O1 | 0.68240 (17) | −0.10594 (13) | 0.2500 | 0.0887 (8) | |
O2 | 0.52310 (17) | −0.06963 (13) | 0.2500 | 0.1081 (10) | |
N3 | 0.61352 (18) | −0.04820 (14) | 0.2500 | 0.0582 (6) | |
N1 | 0.72021 (14) | 0.33126 (12) | 0.2500 | 0.0422 (5) | |
H1 | 0.6721 | 0.3730 | 0.2500 | 0.051* | |
N2 | 0.81817 (14) | 0.35582 (13) | 0.2500 | 0.0435 (5) | |
C10 | 0.7757 (2) | 0.52229 (16) | 0.2500 | 0.0489 (6) | |
C6 | 0.69506 (16) | 0.23623 (15) | 0.2500 | 0.0379 (5) | |
C8 | 0.9648 (2) | 0.45339 (18) | 0.2500 | 0.0597 (7) | |
C5 | 0.59053 (17) | 0.21060 (14) | 0.2500 | 0.0436 (6) | |
H5 | 0.5392 | 0.2563 | 0.2500 | 0.052* | |
C2 | 0.74469 (18) | 0.07505 (15) | 0.2500 | 0.0447 (6) | |
H2 | 0.7957 | 0.0290 | 0.2500 | 0.054* | |
C4 | 0.56352 (18) | 0.11723 (15) | 0.2500 | 0.0475 (6) | |
H4 | 0.4941 | 0.0993 | 0.2500 | 0.057* | |
O5 | 0.81917 (15) | 0.60575 (12) | 0.2500 | 0.0768 (7) | |
C3 | 0.64146 (18) | 0.05094 (15) | 0.2500 | 0.0423 (5) | |
C1 | 0.77167 (17) | 0.16807 (15) | 0.2500 | 0.0431 (6) | |
H1A | 0.8413 | 0.1853 | 0.2500 | 0.052* | |
C9 | 0.84922 (18) | 0.44293 (16) | 0.2500 | 0.0453 (6) | |
C7 | 1.0288 (2) | 0.3663 (2) | 0.2500 | 0.0906 (12) | |
H7A | 1.0318 | 0.3412 | 0.1158 | 0.136* | 0.50 |
H7B | 0.9980 | 0.3211 | 0.3387 | 0.136* | 0.50 |
H7C | 1.0978 | 0.3806 | 0.2954 | 0.136* | 0.50 |
C11 | 0.7477 (3) | 0.68338 (19) | 0.2500 | 0.0908 (11) | |
H11A | 0.7153 | 0.6882 | 0.1201 | 0.136* | 0.50 |
H11B | 0.7847 | 0.7401 | 0.2788 | 0.136* | 0.50 |
H11C | 0.6955 | 0.6735 | 0.3511 | 0.136* | 0.50 |
U11 | U22 | U33 | U12 | U13 | U23 | |
O4 | 0.0474 (12) | 0.0424 (10) | 0.1281 (19) | −0.0013 (8) | 0.000 | 0.000 |
O3 | 0.0517 (12) | 0.0553 (13) | 0.162 (2) | −0.0184 (10) | 0.000 | 0.000 |
O1 | 0.0783 (14) | 0.0355 (10) | 0.152 (2) | 0.0124 (10) | 0.000 | 0.000 |
O2 | 0.0591 (13) | 0.0402 (11) | 0.225 (3) | −0.0140 (10) | 0.000 | 0.000 |
N3 | 0.0587 (14) | 0.0335 (11) | 0.0824 (16) | −0.0003 (11) | 0.000 | 0.000 |
N1 | 0.0398 (10) | 0.0318 (10) | 0.0551 (12) | −0.0030 (8) | 0.000 | 0.000 |
N2 | 0.0430 (11) | 0.0392 (10) | 0.0482 (12) | −0.0067 (9) | 0.000 | 0.000 |
C10 | 0.0524 (16) | 0.0355 (13) | 0.0588 (16) | −0.0074 (11) | 0.000 | 0.000 |
C6 | 0.0426 (12) | 0.0333 (11) | 0.0377 (12) | −0.0018 (10) | 0.000 | 0.000 |
C8 | 0.0493 (15) | 0.0478 (15) | 0.0821 (19) | −0.0102 (13) | 0.000 | 0.000 |
C5 | 0.0417 (12) | 0.0317 (12) | 0.0575 (14) | 0.0039 (9) | 0.000 | 0.000 |
C2 | 0.0434 (13) | 0.0358 (12) | 0.0547 (14) | 0.0065 (10) | 0.000 | 0.000 |
C4 | 0.0392 (12) | 0.0369 (12) | 0.0664 (16) | −0.0023 (10) | 0.000 | 0.000 |
O5 | 0.0622 (12) | 0.0348 (10) | 0.1333 (19) | −0.0092 (9) | 0.000 | 0.000 |
C3 | 0.0456 (13) | 0.0283 (11) | 0.0530 (14) | 0.0000 (10) | 0.000 | 0.000 |
C1 | 0.0381 (12) | 0.0404 (13) | 0.0507 (14) | −0.0020 (10) | 0.000 | 0.000 |
C9 | 0.0460 (13) | 0.0360 (12) | 0.0537 (14) | −0.0081 (10) | 0.000 | 0.000 |
C7 | 0.0511 (17) | 0.0568 (17) | 0.164 (4) | −0.0011 (14) | 0.000 | 0.000 |
C11 | 0.088 (2) | 0.0336 (14) | 0.150 (3) | −0.0002 (16) | 0.000 | 0.000 |
O4—C10 | 1.204 (3) | C5—C4 | 1.380 (3) |
O3—C8 | 1.203 (3) | C5—H5 | 0.9300 |
O1—N3 | 1.212 (3) | C2—C3 | 1.374 (3) |
O2—N3 | 1.204 (3) | C2—C1 | 1.375 (3) |
N3—C3 | 1.463 (3) | C2—H2 | 0.9300 |
N1—N2 | 1.310 (2) | C4—C3 | 1.381 (3) |
N1—C6 | 1.397 (3) | C4—H4 | 0.9300 |
N1—H1 | 0.8600 | O5—C11 | 1.442 (3) |
N2—C9 | 1.308 (3) | C1—H1A | 0.9300 |
C10—O5 | 1.318 (3) | C7—H7A | 0.9600 |
C10—C9 | 1.478 (3) | C7—H7B | 0.9600 |
C6—C1 | 1.387 (3) | C7—H7C | 0.9600 |
C6—C5 | 1.395 (3) | C11—H11A | 0.9600 |
C8—C7 | 1.494 (4) | C11—H11B | 0.9600 |
C8—C9 | 1.496 (3) | C11—H11C | 0.9600 |
O2—N3—O1 | 122.3 (2) | C3—C4—H4 | 120.6 |
O2—N3—C3 | 119.0 (2) | C10—O5—C11 | 115.2 (2) |
O1—N3—C3 | 118.7 (2) | C2—C3—C4 | 122.1 (2) |
N2—N1—C6 | 118.96 (18) | C2—C3—N3 | 118.8 (2) |
N2—N1—H1 | 120.5 | C4—C3—N3 | 119.1 (2) |
C6—N1—H1 | 120.5 | C2—C1—C6 | 120.0 (2) |
C9—N2—N1 | 123.4 (2) | C2—C1—H1A | 120.0 |
O4—C10—O5 | 122.7 (2) | C6—C1—H1A | 120.0 |
O4—C10—C9 | 122.3 (2) | N2—C9—C10 | 122.4 (2) |
O5—C10—C9 | 115.0 (2) | N2—C9—C8 | 113.5 (2) |
C1—C6—C5 | 120.1 (2) | C10—C9—C8 | 124.1 (2) |
C1—C6—N1 | 121.24 (19) | C8—C7—H7A | 109.5 |
C5—C6—N1 | 118.64 (19) | C8—C7—H7B | 109.5 |
O3—C8—C7 | 120.3 (2) | H7A—C7—H7B | 109.5 |
O3—C8—C9 | 121.9 (2) | C8—C7—H7C | 109.5 |
C7—C8—C9 | 117.8 (2) | H7A—C7—H7C | 109.5 |
C4—C5—C6 | 119.8 (2) | H7B—C7—H7C | 109.5 |
C4—C5—H5 | 120.1 | O5—C11—H11A | 109.5 |
C6—C5—H5 | 120.1 | O5—C11—H11B | 109.5 |
C3—C2—C1 | 119.2 (2) | H11A—C11—H11B | 109.5 |
C3—C2—H2 | 120.4 | O5—C11—H11C | 109.5 |
C1—C2—H2 | 120.4 | H11A—C11—H11C | 109.5 |
C5—C4—C3 | 118.8 (2) | H11B—C11—H11C | 109.5 |
C5—C4—H4 | 120.6 | ||
C6—N1—N2—C9 | 180.0 | O1—N3—C3—C4 | 180.0 |
N2—N1—C6—C1 | 0.0 | C3—C2—C1—C6 | 0.0 |
N2—N1—C6—C5 | 180.0 | C5—C6—C1—C2 | 0.0 |
C1—C6—C5—C4 | 0.0 | N1—C6—C1—C2 | 180.0 |
N1—C6—C5—C4 | 180.0 | N1—N2—C9—C10 | 0.0 |
C6—C5—C4—C3 | 0.0 | N1—N2—C9—C8 | 180.0 |
O4—C10—O5—C11 | 0.0 | O4—C10—C9—N2 | 0.0 |
C9—C10—O5—C11 | 180.0 | O5—C10—C9—N2 | 180.0 |
C1—C2—C3—C4 | 0.0 | O4—C10—C9—C8 | 180.0 |
C1—C2—C3—N3 | 180.0 | O5—C10—C9—C8 | 0.0 |
C5—C4—C3—C2 | 0.0 | O3—C8—C9—N2 | 180.0 |
C5—C4—C3—N3 | 180.0 | C7—C8—C9—N2 | 0.0 |
O2—N3—C3—C2 | 180.0 | O3—C8—C9—C10 | 0.0 |
O1—N3—C3—C2 | 0.0 | C7—C8—C9—C10 | 180.0 |
O2—N3—C3—C4 | 0.0 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O4 | 0.86 | 1.98 | 2.618 (3) | 130 |
C2—H2···O3i | 0.93 | 2.55 | 3.279 (3) | 135 |
C11—H11B···O1ii | 0.96 | 2.57 | 3.128 (3) | 117 |
N1—H1···O2iii | 0.86 | 2.64 | 3.439 (3) | 154 |
C5—H5···O2iii | 0.93 | 2.62 | 3.467 (4) | 153 |
C4iii—H4iii···O4 | 0.93 | 2.61 | 3.518 (3) | 167 |
Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) x, y+1, z; (iii) −x+1, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C11H11N3O5 |
Mr | 265.2 |
Crystal system, space group | Orthorhombic, Pbcm |
Temperature (K) | 296 |
a, b, c (Å) | 12.880 (3), 14.299 (3), 6.6328 (14) |
V (Å3) | 1221.6 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.30 × 0.30 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART 1000 CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2002) |
Tmin, Tmax | 0.966, 0.977 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10245, 1546, 968 |
Rint | 0.041 |
(sin θ/λ)max (Å−1) | 0.652 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.121, 1.03 |
No. of reflections | 1546 |
No. of parameters | 118 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.20, −0.13 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2003), SHELXTL (Sheldrick, 2008).
O4—C10 | 1.204 (3) | N2—C9 | 1.308 (3) |
O3—C8 | 1.203 (3) | C10—O5 | 1.318 (3) |
O1—N3 | 1.212 (3) | C10—C9 | 1.478 (3) |
O2—N3 | 1.204 (3) | C8—C7 | 1.494 (4) |
N3—C3 | 1.463 (3) | C8—C9 | 1.496 (3) |
N1—N2 | 1.310 (2) | O5—C11 | 1.442 (3) |
N1—C6 | 1.397 (3) | ||
O2—N3—O1 | 122.3 (2) | C5—C6—N1 | 118.64 (19) |
O2—N3—C3 | 119.0 (2) | O3—C8—C7 | 120.3 (2) |
O1—N3—C3 | 118.7 (2) | O3—C8—C9 | 121.9 (2) |
C9—N2—N1 | 123.4 (2) | C7—C8—C9 | 117.8 (2) |
O4—C10—O5 | 122.7 (2) | C10—O5—C11 | 115.2 (2) |
O4—C10—C9 | 122.3 (2) | N2—C9—C10 | 122.4 (2) |
O5—C10—C9 | 115.0 (2) | N2—C9—C8 | 113.5 (2) |
C1—C6—N1 | 121.24 (19) | C10—C9—C8 | 124.1 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O4 | 0.86 | 1.98 | 2.618 (3) | 130 |
C2—H2···O3i | 0.93 | 2.55 | 3.279 (3) | 135 |
C11—H11B···O1ii | 0.96 | 2.57 | 3.128 (3) | 117 |
N1—H1···O2iii | 0.86 | 2.64 | 3.439 (3) | 154 |
C5—H5···O2iii | 0.93 | 2.62 | 3.467 (4) | 153 |
C4iii—H4iii···O4 | 0.93 | 2.61 | 3.518 (3) | 167 |
Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) x, y+1, z; (iii) −x+1, y+1/2, −z+1/2. |
Acknowledgements
The authors thank the Natural Science Foundation of Yangzhou University (grant No. 2006XJJ03) for financial support of this work.
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.
Phenylhydrazone and its derivatives show remarkable stability and high tendency to form non-centrosymmetric crystal packing (Lewis et al., 1999; Mague et al., 1997) and exceptional electronic, bioactive and chemical properties useful for analytic purposes (Mahy et al., 1993), for biological chemistry (Thami et al., 1992) and also for optical materials (Serbutoviez et al., 1995). As a part of our ongoing research (Liu et al., 2007; Liu et al., 2008), the crystal structure of the title compound was solved.
The molecule of the title compound exists in the (E)-isomer configuration, not as the generally more stable (Z)-isomer (Schemes 1 and 2). The (E)-isomer exists here because of the N—H···O intra-molecular hydrogen bond stabilizes it by forming a pseudo-ring S(6) (Bernstein et al., 1995) motif (Fig. 1, Table 1 and 2). The N1—C6 bond distance at 1.397 (3) Å is longer than the expected C═N double bond (1.32 Å) but is shorter than a C—N single bond (1.47 Å) because of the classic sp2-hybrid nitrogen atom, as also found in our earlier work (Liu et al., 2007, 2008). All these effects may help all non-hydrogen atoms to form a perfect plane which coincides with the mirror plane of the space group, less for the hydrogen atoms of the two methyl groups whose six H atoms are disordered over two orientations.
In the crystal packing the molecules are linked into larger perfectly planar sheets via by four C—H···O inter-molecular hydrogen bonds and one N—H···O intra-molecular hydrogen bond running parallel to the [001] plane (Fig. 2, Table 2). H1 atom of the N1 atom is a part of a bifurcated system and makes both intra- and intermolecular H-bridges, with angles around the H1 adding up to 360°. Finally, along the c axis the N1—N2 bond centers of molecules combine its up and down neighbours' phenyl rings into three dimensional framework (Fig. 2). Consecutive bond centers···phenyl ring centers are at a distance of ca. 3.57 Å and an incline at an angle of ca. 137° (Fig. 3).