organic compounds
3-Pentanone 2,4-dinitrophenylhydrazone
aDepartment of Chemical Engineering, West Branch, Zhejiang University of Technology, People's Republic of China, and bCollege of Chemical Engineering and Materials Science, Zhejiang University of Technology, People's Republic of China
*Correspondence e-mail: shanshang@mail.hz.zj.cn
Crystals of the title compound, C11H14N4O4, were obtained from a condensation reaction of 2,4-dinitrophenylhydrazine and 3-pentanone. In the the molecule, except one methyl group, displays a nearly planar structure. The imino group links to the adjacent nitro group via intramolecular hydrogen bonding. The partially overlapped arrangement and face-to-face separation of 3.410 (9) Å between parallel benzene rings indicate the existence of π–π stacking between adjacent molecules. The also contains weak intermolecular C—H⋯O hydrogen bonding.
Related literature
For general background, see: Okabe et al. (1993); Shan et al. (2003); Shan et al. (2006). For related structures, see: Shan et al. (2008a,b); Cotton & Wilkinson (1972).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: PROCESS-AUTO (Rigaku, 1998); cell PROCESS-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
10.1107/S1600536808016887/xu2428sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808016887/xu2428Isup2.hkl
2,4-Dinitrophenylhydrazine (0.4 g, 2 mmol) was dissolved in ethanol (10 ml), and H2SO4 solution (98%, 0.5 ml) was slowly added to the ethanol solution with stirring. The solution was heated at about 333 K for several min until the solution cleared. 3-Pentanone (0.17 g, 2 mmol) was then added to the above solution with continuous stirring. The mixture was refluxed for 30 min. When the solution had cooled to room temperature red powder crystals appeared. The powder crystals were separated and washed with water three times. Recrystallization from absolute ethanol solution yielded well shaped single crystals of the title compound.
Imino H atom was located in a difference Fourier map and refined isotropically. Methyl H atoms were placed in calculated positions with C—H = 0.96 Å and torsion angles were refined to fit the electron density, Uiso(H) = 1.5Ueq(C). Other H atoms were placed in calculated positions with C—H = 0.93 (aromatic) and 0.97 Å (methylene), and refined in riding mode with Uiso(H) = 1.2Ueq(C).
Data collection: PROCESS-AUTO (Rigaku, 1998); cell
PROCESS-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).C11H14N4O4 | F(000) = 560 |
Mr = 266.26 | Dx = 1.356 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71069 Å |
Hall symbol: -P 2ybc | Cell parameters from 2556 reflections |
a = 12.5298 (15) Å | θ = 3.5–25.0° |
b = 14.089 (2) Å | µ = 0.11 mm−1 |
c = 7.3983 (8) Å | T = 294 K |
β = 93.235 (12)° | Prism, red |
V = 1303.9 (3) Å3 | 0.31 × 0.29 × 0.22 mm |
Z = 4 |
Rigaku R-AXIS RAPID IP diffractometer | 1130 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.037 |
Graphite monochromator | θmax = 26.0°, θmin = 3.1° |
Detector resolution: 10.00 pixels mm-1 | h = −15→15 |
ω scans | k = −17→17 |
10943 measured reflections | l = −9→8 |
2543 independent reflections |
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)] = 0.043 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.136 | w = 1/[σ2(Fo2) + (0.0627P)2 + 0.0303P] where P = (Fo2 + 2Fc2)/3 |
S = 1.01 | (Δ/σ)max < 0.001 |
2543 reflections | Δρmax = 0.15 e Å−3 |
179 parameters | Δρmin = −0.12 e Å−3 |
0 restraints | Extinction correction: SHELXL, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.014 (2) |
C11H14N4O4 | V = 1303.9 (3) Å3 |
Mr = 266.26 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 12.5298 (15) Å | µ = 0.11 mm−1 |
b = 14.089 (2) Å | T = 294 K |
c = 7.3983 (8) Å | 0.31 × 0.29 × 0.22 mm |
β = 93.235 (12)° |
Rigaku R-AXIS RAPID IP diffractometer | 1130 reflections with I > 2σ(I) |
10943 measured reflections | Rint = 0.037 |
2543 independent reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.136 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | Δρmax = 0.15 e Å−3 |
2543 reflections | Δρmin = −0.12 e Å−3 |
179 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 | ||
N1 | 0.49005 (19) | 0.29067 (16) | 0.0607 (3) | 0.0817 (6) | |
N2 | 0.79233 (17) | 0.4911 (2) | 0.2228 (3) | 0.0928 (7) | |
N3 | 0.35067 (15) | 0.43228 (17) | 0.2123 (3) | 0.0742 (6) | |
N4 | 0.28589 (14) | 0.50533 (14) | 0.2635 (2) | 0.0758 (6) | |
O1 | 0.39384 (16) | 0.27125 (13) | 0.0591 (3) | 0.1056 (6) | |
O2 | 0.55348 (16) | 0.23773 (14) | −0.0069 (3) | 0.1145 (7) | |
O3 | 0.84951 (15) | 0.42733 (18) | 0.1731 (3) | 0.1230 (8) | |
O4 | 0.82618 (14) | 0.56837 (18) | 0.2750 (3) | 0.1248 (8) | |
C1 | 0.45801 (16) | 0.44522 (16) | 0.2116 (2) | 0.0610 (6) | |
C2 | 0.52770 (16) | 0.37825 (16) | 0.1427 (2) | 0.0636 (6) | |
C3 | 0.63704 (17) | 0.39319 (17) | 0.1474 (3) | 0.0707 (6) | |
H3 | 0.6823 | 0.3478 | 0.1019 | 0.085* | |
C4 | 0.67726 (16) | 0.47555 (18) | 0.2196 (3) | 0.0687 (6) | |
C5 | 0.61123 (17) | 0.54410 (17) | 0.2870 (3) | 0.0696 (6) | |
H5 | 0.6402 | 0.6000 | 0.3352 | 0.083* | |
C6 | 0.50387 (17) | 0.52968 (16) | 0.2827 (3) | 0.0665 (6) | |
H6 | 0.4599 | 0.5763 | 0.3275 | 0.080* | |
C7 | 0.18529 (19) | 0.4892 (2) | 0.2520 (3) | 0.0854 (7) | |
C8 | 0.11384 (19) | 0.5688 (2) | 0.3035 (4) | 0.1065 (9) | |
H8A | 0.0615 | 0.5796 | 0.2040 | 0.128* | |
H8B | 0.0752 | 0.5485 | 0.4068 | 0.128* | |
C9 | 0.1670 (2) | 0.6608 (2) | 0.3497 (4) | 0.1228 (11) | |
H9A | 0.2204 | 0.6513 | 0.4462 | 0.184* | |
H9B | 0.1148 | 0.7054 | 0.3874 | 0.184* | |
H9C | 0.2001 | 0.6851 | 0.2453 | 0.184* | |
C10 | 0.1317 (2) | 0.3981 (2) | 0.1833 (4) | 0.1104 (10) | |
H10A | 0.0593 | 0.4123 | 0.1380 | 0.132* | |
H10B | 0.1703 | 0.3733 | 0.0836 | 0.132* | |
C11 | 0.1285 (3) | 0.3250 (3) | 0.3265 (4) | 0.1350 (11) | |
H11A | 0.2002 | 0.3082 | 0.3670 | 0.202* | |
H11B | 0.0920 | 0.2697 | 0.2788 | 0.202* | |
H11C | 0.0914 | 0.3496 | 0.4264 | 0.202* | |
H3N | 0.3286 (18) | 0.3785 (18) | 0.167 (3) | 0.092 (9)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0977 (15) | 0.0693 (15) | 0.0780 (13) | 0.0007 (13) | 0.0042 (12) | −0.0036 (11) |
N2 | 0.0699 (15) | 0.116 (2) | 0.0930 (15) | −0.0022 (14) | 0.0047 (11) | 0.0069 (14) |
N3 | 0.0693 (13) | 0.0696 (15) | 0.0838 (13) | −0.0045 (12) | 0.0044 (10) | 0.0017 (11) |
N4 | 0.0664 (12) | 0.0779 (15) | 0.0833 (12) | 0.0052 (10) | 0.0063 (9) | 0.0082 (10) |
O1 | 0.1008 (13) | 0.0832 (14) | 0.1323 (15) | −0.0184 (11) | 0.0006 (11) | −0.0159 (11) |
O2 | 0.1273 (15) | 0.0911 (15) | 0.1265 (16) | 0.0073 (12) | 0.0198 (12) | −0.0373 (12) |
O3 | 0.0742 (11) | 0.143 (2) | 0.1533 (19) | 0.0159 (12) | 0.0156 (11) | −0.0054 (14) |
O4 | 0.0865 (13) | 0.138 (2) | 0.1503 (18) | −0.0311 (13) | 0.0091 (11) | −0.0206 (15) |
C1 | 0.0659 (13) | 0.0637 (16) | 0.0532 (11) | −0.0012 (11) | 0.0020 (10) | 0.0093 (10) |
C2 | 0.0733 (14) | 0.0604 (15) | 0.0570 (12) | 0.0004 (12) | 0.0022 (10) | 0.0053 (11) |
C3 | 0.0761 (15) | 0.0749 (17) | 0.0613 (13) | 0.0131 (12) | 0.0072 (11) | 0.0077 (11) |
C4 | 0.0618 (13) | 0.0807 (17) | 0.0637 (13) | −0.0006 (13) | 0.0040 (10) | 0.0075 (12) |
C5 | 0.0746 (15) | 0.0700 (16) | 0.0637 (12) | −0.0068 (12) | 0.0010 (11) | 0.0018 (11) |
C6 | 0.0700 (14) | 0.0647 (15) | 0.0647 (13) | 0.0042 (11) | 0.0043 (10) | 0.0014 (11) |
C7 | 0.0660 (15) | 0.099 (2) | 0.0907 (17) | −0.0043 (14) | 0.0038 (12) | 0.0060 (14) |
C8 | 0.0719 (16) | 0.124 (3) | 0.124 (2) | 0.0170 (17) | 0.0121 (15) | 0.0007 (19) |
C9 | 0.104 (2) | 0.103 (3) | 0.163 (3) | 0.0176 (18) | 0.0196 (19) | −0.003 (2) |
C10 | 0.0770 (17) | 0.136 (3) | 0.118 (2) | −0.0064 (17) | 0.0036 (16) | 0.002 (2) |
C11 | 0.147 (3) | 0.123 (3) | 0.135 (3) | −0.027 (2) | 0.015 (2) | −0.001 (2) |
N1—O2 | 1.218 (2) | C5—H5 | 0.9300 |
N1—O1 | 1.235 (2) | C6—H6 | 0.9300 |
N1—C2 | 1.442 (3) | C7—C8 | 1.497 (4) |
N2—O3 | 1.219 (3) | C7—C10 | 1.523 (4) |
N2—O4 | 1.222 (3) | C8—C9 | 1.489 (4) |
N2—C4 | 1.457 (3) | C8—H8A | 0.9700 |
N3—C1 | 1.358 (3) | C8—H8B | 0.9700 |
N3—N4 | 1.377 (3) | C9—H9A | 0.9600 |
N3—H3N | 0.87 (2) | C9—H9B | 0.9600 |
N4—C7 | 1.279 (3) | C9—H9C | 0.9600 |
C1—C2 | 1.401 (3) | C10—C11 | 1.479 (4) |
C1—C6 | 1.410 (3) | C10—H10A | 0.9700 |
C2—C3 | 1.385 (3) | C10—H10B | 0.9700 |
C3—C4 | 1.362 (3) | C11—H11A | 0.9600 |
C3—H3 | 0.9300 | C11—H11B | 0.9600 |
C4—C5 | 1.383 (3) | C11—H11C | 0.9600 |
C5—C6 | 1.359 (3) | ||
O2—N1—O1 | 121.3 (2) | N4—C7—C8 | 116.9 (2) |
O2—N1—C2 | 119.4 (2) | N4—C7—C10 | 125.9 (2) |
O1—N1—C2 | 119.3 (2) | C8—C7—C10 | 117.2 (2) |
O3—N2—O4 | 123.5 (2) | C9—C8—C7 | 116.4 (2) |
O3—N2—C4 | 118.8 (3) | C9—C8—H8A | 108.2 |
O4—N2—C4 | 117.7 (3) | C7—C8—H8A | 108.2 |
C1—N3—N4 | 120.0 (2) | C9—C8—H8B | 108.2 |
C1—N3—H3N | 114.2 (16) | C7—C8—H8B | 108.2 |
N4—N3—H3N | 125.4 (16) | H8A—C8—H8B | 107.4 |
C7—N4—N3 | 116.3 (2) | C8—C9—H9A | 109.5 |
N3—C1—C2 | 123.3 (2) | C8—C9—H9B | 109.5 |
N3—C1—C6 | 119.7 (2) | H9A—C9—H9B | 109.5 |
C2—C1—C6 | 117.06 (19) | C8—C9—H9C | 109.5 |
C3—C2—C1 | 121.6 (2) | H9A—C9—H9C | 109.5 |
C3—C2—N1 | 116.1 (2) | H9B—C9—H9C | 109.5 |
C1—C2—N1 | 122.2 (2) | C11—C10—C7 | 112.2 (2) |
C4—C3—C2 | 118.9 (2) | C11—C10—H10A | 109.2 |
C4—C3—H3 | 120.6 | C7—C10—H10A | 109.2 |
C2—C3—H3 | 120.6 | C11—C10—H10B | 109.2 |
C3—C4—C5 | 121.4 (2) | C7—C10—H10B | 109.2 |
C3—C4—N2 | 118.6 (2) | H10A—C10—H10B | 107.9 |
C5—C4—N2 | 120.0 (2) | C10—C11—H11A | 109.5 |
C6—C5—C4 | 119.9 (2) | C10—C11—H11B | 109.5 |
C6—C5—H5 | 120.0 | H11A—C11—H11B | 109.5 |
C4—C5—H5 | 120.0 | C10—C11—H11C | 109.5 |
C5—C6—C1 | 121.1 (2) | H11A—C11—H11C | 109.5 |
C5—C6—H6 | 119.4 | H11B—C11—H11C | 109.5 |
C1—C6—H6 | 119.4 |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3N···O1 | 0.87 (2) | 1.91 (2) | 2.606 (3) | 136 (2) |
C5—H5···O1i | 0.93 | 2.58 | 3.399 (3) | 147 |
Symmetry code: (i) −x+1, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C11H14N4O4 |
Mr | 266.26 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 294 |
a, b, c (Å) | 12.5298 (15), 14.089 (2), 7.3983 (8) |
β (°) | 93.235 (12) |
V (Å3) | 1303.9 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.31 × 0.29 × 0.22 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID IP diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10943, 2543, 1130 |
Rint | 0.037 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.136, 1.01 |
No. of reflections | 2543 |
No. of parameters | 179 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.15, −0.12 |
Computer programs: PROCESS-AUTO (Rigaku, 1998), PROCESS-AUTO, CrystalStructure (Rigaku/MSC, 2002), SIR92 (Altomare et al., 1993), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997), WinGX (Farrugia, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3N···O1 | 0.87 (2) | 1.91 (2) | 2.606 (3) | 136 (2) |
C5—H5···O1i | 0.93 | 2.58 | 3.399 (3) | 147 |
Symmetry code: (i) −x+1, y+1/2, −z+1/2. |
Acknowledgements
The work was supported by the Natural Science Foundation of Zhejiang Province, China (No. M203027).
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.
As some phenylhydrazone derivatives have shown to be potentially DNA damaging and mutagenic agents (Okabe et al., 1993), a series of new phenylhydrazone derivatives have been synthesized in our laboratory (Shan et al., 2003; Shan et al., 2006). As part of the ongoing investigation, the title compound has recently been prepared and its crystal structure is reported here.
The molecular structure of the title compound is shown in Fig. 1. The molecule, except the C11-methyl group, displays a nearly co-planar structure, the angle between the C11—C10 bond and C1/N3/N4/C7/C8/C9 mean plane being 61.4 (2)°. The N4—C7 bond distance is significantly shorter than N3—N4 and N3—C1 bond distances (Table 1), and indicates the typical C═N double bond. The imino group links with adjacent nitro group via intra-molecular hydrogen bonding (Fig. 1 and Table 2), which agrees with that found in related structures, e.g. furyl methyl ketone 2,4-dinitrophenylhydrazone (Shan et al., 2008a) and 2-thiazolyl methyl ketone 2,4-dinitrophenylhydrazone (Shan et al., 2008b).
A partially overlapped arrangement between parallel benzene rings of the adjacent molecules is illustrated in Fig. 2. The face-to-face separation of 3.410 (9) Å between C1-benzene and C1i-benzene rings [symmetry code: (i) 1 - x,1 - y,-z] is significantly shorter than van der Waals thickness of the aromatic ring (3.70 Å, Cotton & Wilkinson, 1972) and indicates the existence of π-π stacking in the crystal structure. The crystal structure also contains intermolecular weak C—H···O hydrogen bonding (Table 2).