organic compounds
(E)-1-[1-(2-Chlorophenyl)ethylidene]-2-(2,4-dinitrophenyl)hydrazine
aCrystal Materials Research Unit, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand, and bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: suchada.c@psu.ac.th
The title molecule, C14H11ClN4O4, is in an E configuration and is twisted with the dihedral angle between the two benzene rings being 38.48 (8)°. The ethylidenehydrazine plane makes dihedral angles of 6.03 (10) and 44.04 (11)°, respectively, with the dinitro- and chloro-substituted benzene rings. The two nitro groups are essentially coplanar with the bound benzene ring, making dihedral angles of 0.9 (2) and 1.65 (18)°. An intramolecular N—H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, molecules are linked by a weak C—H⋯O interaction into a chain along the c axis. The chains are further stacked along the b axis by a π–π interaction with a centroid–centroid distance of 3.6088 (10) Å.
Related literature
For bond-length data, see: Allen et al. (1987). For hydrogen-bond motifs, see: Bernstein et al. (1995). For related structures, see: Fun et al. (2010, 2011); Jansrisewangwong et al. (2010); Nilwanna et al. (2011). For background to and the biological activity of hydrozones, see: Angelusiu et al. (2010); Bendre et al. (1998); Gokce et al. (2009); Li et al. (2008); Loncle et al. (2004).
Experimental
Crystal data
|
Refinement
|
Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S160053681105001X/is5008sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053681105001X/is5008Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S160053681105001X/is5008Isup3.cml
The title compound (I) was synthesized by dissolving 2,4-dinitrophenylhydrazine (0.40 g, 2 mmol) in ethanol (10.00 ml) and H2SO4 (conc.) (98%, 0.50 ml) was slowly added with stirring. 2-Chloroacetophenone (0.30 ml, 2 mmol) was then added to the solution with continuous stirring. The solution was refluxed for 1 h yielding a yellow solid, which was filtered off and washed with methanol. Yellow block-shaped single crystals of the title compound suitable for X-ray diffraction were recrystalized from ethanol by slow evaporation of the solvent at room temperature over several days (m.p. 478–479).
Amide H atom was located in a difference map and refined isotropically [N—H = 0.85 (2) Å]. The remaining H atoms were positioned geometrically and allowed to ride on their parent atoms, with C—H = 0.93 Å for aromatic and 0.96 Å for CH3 atoms. The Uiso values were constrained to be 1.5Ueq of the
for methyl H atoms and 1.2Ueq for the remaining H atoms. A rotating group model was used for the methyl groups.Hydrazones have been known to be responsible for various bioactivities such as antibacterial (Angelusiu et al., 2010), antioxidant (Li et al., 2008), antifungal (Loncle et al., 2004), anti-inflammatory (Gokce et al., 2009) and also tyrosinase inhibitory (Bendre et al., 1998) activities. With our on-going research on medicinal chemistry, we previously reported the syntheses and crystal structures of some hydrazone derivatives (Fun et al., 2010, 2011; Jansrisewangwong et al., 2010; Nilwanna et al., 2011). Herein we report the
of the title compound. It was screened for antioxidant and antibacterial activities and found to be inactive.The title molecule (Fig. 1), C14H11ClN4O4, is twisted and exists in an E configuration with respect to the ethylidene C7═N1 double bond [1.2877 (17) Å] with the torsion angle N2–N1–C7–C8 = -176.69 (13)°. The dihedral angle between the benzene rings of the 2,4-dinitrophenyl and 2-chlorophenyl groups is 38.48 (8)°. The middle ethylidenehydrazine unit (C7/C14/N1/N2) is planar with an r.m.s deviation of 0.0040 (1) Å and the torsion angle of N2–N1–C7–C14 is -1.3 (2)°. This middle C/C/N/N plane makes the dihedral angles of 6.03 (10) and 44.04 (11)° with the 2,4-dinitrophenyl and 2-chlorophenyl rings, respectively. The two nitro groups of 2,4-dinitrophenyl are essentially co-planar with the bound benzene ring with an r.m.s. deviation of 0.0081 (1) Å for the twelve non H-atoms and the O–N–C–C angles are -0.3 (2), 0.2 (2), 0.1 (3) and -0.1 (3)°. An intramolecular N—H···O hydrogen bond between the hydrazone-NH and the ortho nitro group (Fig. 1 and Table 1) generates an S(6) ring motif (Bernstein et al., 1995). The bond distances are within the normal range (Allen et al., 1987) and are comparable with related structures (Fun et al., 2010, 2011; Jansrisewangwong et al., 2010; Nilwanna et al., 2011).
In the π–π interaction with Cg1···Cg2ii distance of 3.6088 (10) Å [symmetry code: (ii) x, 1 - y, 1/2 + z]; Cg1 and Cg2 are the centroids of C1–C6 and C8–C13 benzene rings, respectively.
(Fig. 2), the molecules are linked by weak C—H···O interactions (Table 1) into chains along the c axis in a head-to-head manner. These chains are further stacked along the b axis by aFor bond-length data, see: Allen et al. (1987). For hydrogen-bond motifs, see: Bernstein et al. (1995). For related structures, see: Fun et al. (2010, 2011); Jansrisewangwong et al. (2010); Nilwanna et al. (2011). For background to and the biological activity of hydrozones, see: Angelusiu et al. (2010); Bendre et al. (1998); Gokce et al. (2009); Li et al. (2008); Loncle et al. (2004).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).C14H11ClN4O4 | F(000) = 1376 |
Mr = 334.72 | Dx = 1.527 Mg m−3 |
Monoclinic, C2/c | Melting point = 478–479 K |
Hall symbol: -C 2yc | Mo Kα radiation, λ = 0.71073 Å |
a = 32.660 (3) Å | Cell parameters from 4458 reflections |
b = 7.1435 (7) Å | θ = 1.4–30.6° |
c = 13.4798 (13) Å | µ = 0.29 mm−1 |
β = 112.215 (2)° | T = 297 K |
V = 2911.5 (5) Å3 | Block, yellow |
Z = 8 | 0.36 × 0.26 × 0.15 mm |
Bruker APEXII CCD area-detector diffractometer | 4458 independent reflections |
Radiation source: sealed tube | 3036 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
φ and ω scans | θmax = 30.6°, θmin = 1.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −46→46 |
Tmin = 0.904, Tmax = 0.957 | k = −10→10 |
16146 measured reflections | l = −19→19 |
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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.127 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0537P)2 + 1.2234P] where P = (Fo2 + 2Fc2)/3 |
4458 reflections | (Δ/σ)max = 0.001 |
213 parameters | Δρmax = 0.24 e Å−3 |
0 restraints | Δρmin = −0.27 e Å−3 |
C14H11ClN4O4 | V = 2911.5 (5) Å3 |
Mr = 334.72 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 32.660 (3) Å | µ = 0.29 mm−1 |
b = 7.1435 (7) Å | T = 297 K |
c = 13.4798 (13) Å | 0.36 × 0.26 × 0.15 mm |
β = 112.215 (2)° |
Bruker APEXII CCD area-detector diffractometer | 4458 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3036 reflections with I > 2σ(I) |
Tmin = 0.904, Tmax = 0.957 | Rint = 0.028 |
16146 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.127 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.24 e Å−3 |
4458 reflections | Δρmin = −0.27 e Å−3 |
213 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 | ||
Cl1 | 0.015926 (14) | 0.34149 (7) | 0.42093 (4) | 0.06172 (16) | |
O1 | 0.06808 (4) | 0.2345 (2) | 0.95156 (10) | 0.0573 (3) | |
O2 | 0.09965 (5) | 0.2876 (2) | 1.12043 (10) | 0.0700 (4) | |
O3 | 0.24764 (5) | 0.5021 (3) | 1.28114 (10) | 0.0848 (5) | |
O4 | 0.28607 (4) | 0.5486 (3) | 1.18505 (11) | 0.0805 (5) | |
N1 | 0.11688 (4) | 0.28366 (18) | 0.72895 (9) | 0.0409 (3) | |
N2 | 0.10981 (4) | 0.2894 (2) | 0.82297 (10) | 0.0419 (3) | |
H1N1 | 0.0863 (7) | 0.249 (3) | 0.8280 (15) | 0.053 (5)* | |
N3 | 0.10020 (4) | 0.2853 (2) | 1.03026 (11) | 0.0449 (3) | |
N4 | 0.25170 (5) | 0.5037 (2) | 1.19483 (11) | 0.0556 (4) | |
C1 | 0.14355 (5) | 0.3406 (2) | 0.91423 (11) | 0.0360 (3) | |
C2 | 0.14038 (4) | 0.3427 (2) | 1.01624 (11) | 0.0367 (3) | |
C3 | 0.17560 (5) | 0.3958 (2) | 1.10769 (11) | 0.0408 (3) | |
H3A | 0.1729 | 0.3959 | 1.1739 | 0.049* | |
C4 | 0.21443 (5) | 0.4482 (2) | 1.09923 (11) | 0.0421 (3) | |
C5 | 0.21904 (5) | 0.4482 (2) | 1.00072 (12) | 0.0457 (4) | |
H5A | 0.2457 | 0.4844 | 0.9964 | 0.055* | |
C6 | 0.18447 (5) | 0.3951 (2) | 0.91068 (11) | 0.0433 (3) | |
H6A | 0.1879 | 0.3947 | 0.8453 | 0.052* | |
C7 | 0.08535 (5) | 0.2174 (2) | 0.64630 (11) | 0.0385 (3) | |
C8 | 0.09681 (5) | 0.2063 (2) | 0.54960 (11) | 0.0388 (3) | |
C9 | 0.06866 (5) | 0.2561 (2) | 0.44575 (12) | 0.0425 (3) | |
C10 | 0.08208 (6) | 0.2441 (3) | 0.35979 (13) | 0.0516 (4) | |
H10A | 0.0628 | 0.2781 | 0.2915 | 0.062* | |
C11 | 0.12381 (7) | 0.1822 (3) | 0.37579 (14) | 0.0565 (4) | |
H11A | 0.1329 | 0.1738 | 0.3183 | 0.068* | |
C12 | 0.15241 (6) | 0.1321 (3) | 0.47736 (15) | 0.0539 (4) | |
H12A | 0.1807 | 0.0900 | 0.4882 | 0.065* | |
C13 | 0.13910 (5) | 0.1445 (2) | 0.56248 (13) | 0.0456 (3) | |
H13A | 0.1588 | 0.1109 | 0.6304 | 0.055* | |
C14 | 0.04246 (5) | 0.1437 (3) | 0.64700 (14) | 0.0546 (4) | |
H14A | 0.0482 | 0.0642 | 0.7082 | 0.082* | |
H14B | 0.0276 | 0.0732 | 0.5827 | 0.082* | |
H14C | 0.0241 | 0.2465 | 0.6505 | 0.082* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0465 (2) | 0.0735 (3) | 0.0510 (2) | 0.0134 (2) | 0.00243 (17) | 0.0014 (2) |
O1 | 0.0378 (6) | 0.0795 (9) | 0.0541 (7) | −0.0125 (6) | 0.0168 (5) | −0.0065 (6) |
O2 | 0.0663 (8) | 0.1052 (11) | 0.0496 (7) | −0.0225 (8) | 0.0345 (6) | −0.0097 (7) |
O3 | 0.0585 (8) | 0.1510 (16) | 0.0417 (7) | −0.0191 (9) | 0.0154 (6) | −0.0282 (8) |
O4 | 0.0416 (7) | 0.1350 (14) | 0.0594 (8) | −0.0233 (8) | 0.0127 (6) | −0.0197 (9) |
N1 | 0.0388 (6) | 0.0484 (7) | 0.0323 (6) | −0.0033 (5) | 0.0097 (5) | −0.0021 (5) |
N2 | 0.0358 (6) | 0.0539 (8) | 0.0343 (6) | −0.0052 (6) | 0.0114 (5) | −0.0027 (5) |
N3 | 0.0421 (7) | 0.0511 (8) | 0.0458 (7) | −0.0034 (6) | 0.0214 (6) | −0.0025 (6) |
N4 | 0.0406 (7) | 0.0801 (11) | 0.0413 (7) | −0.0039 (7) | 0.0099 (6) | −0.0137 (7) |
C1 | 0.0336 (6) | 0.0390 (7) | 0.0335 (6) | 0.0020 (5) | 0.0106 (5) | 0.0000 (5) |
C2 | 0.0334 (6) | 0.0403 (7) | 0.0381 (7) | 0.0004 (5) | 0.0152 (5) | −0.0013 (5) |
C3 | 0.0409 (7) | 0.0491 (8) | 0.0338 (6) | 0.0015 (6) | 0.0156 (6) | −0.0038 (6) |
C4 | 0.0338 (7) | 0.0522 (9) | 0.0358 (7) | 0.0005 (6) | 0.0079 (5) | −0.0063 (6) |
C5 | 0.0331 (7) | 0.0616 (10) | 0.0427 (8) | −0.0019 (7) | 0.0147 (6) | −0.0037 (7) |
C6 | 0.0367 (7) | 0.0597 (10) | 0.0345 (7) | −0.0025 (7) | 0.0147 (6) | −0.0016 (6) |
C7 | 0.0343 (7) | 0.0400 (7) | 0.0359 (7) | 0.0005 (6) | 0.0072 (5) | 0.0002 (6) |
C8 | 0.0371 (7) | 0.0383 (7) | 0.0345 (6) | −0.0045 (6) | 0.0062 (5) | −0.0045 (5) |
C9 | 0.0408 (7) | 0.0411 (8) | 0.0366 (7) | −0.0020 (6) | 0.0046 (6) | −0.0049 (6) |
C10 | 0.0599 (10) | 0.0528 (10) | 0.0349 (7) | −0.0056 (8) | 0.0099 (7) | −0.0042 (6) |
C11 | 0.0673 (11) | 0.0608 (11) | 0.0454 (9) | −0.0083 (9) | 0.0257 (8) | −0.0083 (8) |
C12 | 0.0476 (9) | 0.0564 (10) | 0.0600 (10) | −0.0022 (8) | 0.0229 (8) | −0.0086 (8) |
C13 | 0.0394 (7) | 0.0494 (9) | 0.0415 (7) | −0.0004 (6) | 0.0080 (6) | −0.0041 (6) |
C14 | 0.0411 (8) | 0.0684 (12) | 0.0477 (9) | −0.0113 (8) | 0.0094 (7) | 0.0021 (8) |
Cl1—C9 | 1.7364 (16) | C5—H5A | 0.9300 |
O1—N3 | 1.2314 (17) | C6—H6A | 0.9300 |
O2—N3 | 1.2224 (17) | C7—C8 | 1.488 (2) |
O3—N4 | 1.2198 (19) | C7—C14 | 1.500 (2) |
O4—N4 | 1.2213 (19) | C8—C13 | 1.397 (2) |
N1—C7 | 1.2877 (17) | C8—C9 | 1.399 (2) |
N1—N2 | 1.3720 (17) | C9—C10 | 1.388 (2) |
N2—C1 | 1.3551 (18) | C10—C11 | 1.370 (3) |
N2—H1N1 | 0.85 (2) | C10—H10A | 0.9300 |
N3—C2 | 1.4537 (19) | C11—C12 | 1.381 (3) |
N4—C4 | 1.4537 (19) | C11—H11A | 0.9300 |
C1—C6 | 1.410 (2) | C12—C13 | 1.375 (2) |
C1—C2 | 1.4176 (19) | C12—H12A | 0.9300 |
C2—C3 | 1.384 (2) | C13—H13A | 0.9300 |
C3—C4 | 1.368 (2) | C14—H14A | 0.9600 |
C3—H3A | 0.9300 | C14—H14B | 0.9600 |
C4—C5 | 1.392 (2) | C14—H14C | 0.9600 |
C5—C6 | 1.362 (2) | ||
C7—N1—N2 | 116.82 (13) | N1—C7—C8 | 113.18 (13) |
C1—N2—N1 | 118.92 (13) | N1—C7—C14 | 124.54 (14) |
C1—N2—H1N1 | 118.0 (13) | C8—C7—C14 | 122.11 (13) |
N1—N2—H1N1 | 122.6 (13) | C13—C8—C9 | 116.70 (14) |
O2—N3—O1 | 122.17 (13) | C13—C8—C7 | 118.19 (13) |
O2—N3—C2 | 118.61 (13) | C9—C8—C7 | 125.09 (14) |
O1—N3—C2 | 119.21 (12) | C10—C9—C8 | 121.61 (15) |
O3—N4—O4 | 122.76 (14) | C10—C9—Cl1 | 117.66 (12) |
O3—N4—C4 | 119.10 (14) | C8—C9—Cl1 | 120.71 (12) |
O4—N4—C4 | 118.13 (14) | C11—C10—C9 | 119.86 (15) |
N2—C1—C6 | 119.97 (13) | C11—C10—H10A | 120.1 |
N2—C1—C2 | 123.43 (13) | C9—C10—H10A | 120.1 |
C6—C1—C2 | 116.60 (12) | C10—C11—C12 | 119.94 (16) |
C3—C2—C1 | 121.74 (13) | C10—C11—H11A | 120.0 |
C3—C2—N3 | 116.67 (12) | C12—C11—H11A | 120.0 |
C1—C2—N3 | 121.58 (12) | C13—C12—C11 | 120.12 (16) |
C4—C3—C2 | 119.05 (13) | C13—C12—H12A | 119.9 |
C4—C3—H3A | 120.5 | C11—C12—H12A | 119.9 |
C2—C3—H3A | 120.5 | C12—C13—C8 | 121.76 (15) |
C3—C4—C5 | 121.16 (13) | C12—C13—H13A | 119.1 |
C3—C4—N4 | 119.52 (13) | C8—C13—H13A | 119.1 |
C5—C4—N4 | 119.31 (14) | C7—C14—H14A | 109.5 |
C6—C5—C4 | 119.88 (14) | C7—C14—H14B | 109.5 |
C6—C5—H5A | 120.1 | H14A—C14—H14B | 109.5 |
C4—C5—H5A | 120.1 | C7—C14—H14C | 109.5 |
C5—C6—C1 | 121.56 (13) | H14A—C14—H14C | 109.5 |
C5—C6—H6A | 119.2 | H14B—C14—H14C | 109.5 |
C1—C6—H6A | 119.2 | ||
C7—N1—N2—C1 | 173.61 (14) | C4—C5—C6—C1 | 0.4 (3) |
N1—N2—C1—C6 | 2.9 (2) | N2—C1—C6—C5 | 179.70 (15) |
N1—N2—C1—C2 | −176.94 (14) | C2—C1—C6—C5 | −0.5 (2) |
N2—C1—C2—C3 | 179.97 (14) | N2—N1—C7—C8 | −176.69 (13) |
C6—C1—C2—C3 | 0.1 (2) | N2—N1—C7—C14 | −1.3 (2) |
N2—C1—C2—N3 | 1.3 (2) | N1—C7—C8—C13 | 41.4 (2) |
C6—C1—C2—N3 | −178.56 (14) | C14—C7—C8—C13 | −134.06 (16) |
O2—N3—C2—C3 | 0.2 (2) | N1—C7—C8—C9 | −137.42 (16) |
O1—N3—C2—C3 | −179.10 (15) | C14—C7—C8—C9 | 47.1 (2) |
O2—N3—C2—C1 | 179.01 (15) | C13—C8—C9—C10 | 0.2 (2) |
O1—N3—C2—C1 | −0.3 (2) | C7—C8—C9—C10 | 179.06 (15) |
C1—C2—C3—C4 | 0.2 (2) | C13—C8—C9—Cl1 | −178.03 (12) |
N3—C2—C3—C4 | 178.97 (14) | C7—C8—C9—Cl1 | 0.8 (2) |
C2—C3—C4—C5 | −0.2 (3) | C8—C9—C10—C11 | 0.0 (3) |
C2—C3—C4—N4 | −179.79 (15) | Cl1—C9—C10—C11 | 178.32 (14) |
O3—N4—C4—C3 | 0.1 (3) | C9—C10—C11—C12 | −0.1 (3) |
O4—N4—C4—C3 | 179.51 (17) | C10—C11—C12—C13 | −0.1 (3) |
O3—N4—C4—C5 | −179.43 (18) | C11—C12—C13—C8 | 0.3 (3) |
O4—N4—C4—C5 | −0.1 (3) | C9—C8—C13—C12 | −0.4 (2) |
C3—C4—C5—C6 | −0.1 (3) | C7—C8—C13—C12 | −179.31 (15) |
N4—C4—C5—C6 | 179.48 (16) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H1N1···O1 | 0.85 (2) | 1.97 (2) | 2.6081 (19) | 131.2 (17) |
C6—H6A···O3i | 0.93 | 2.52 | 3.251 (2) | 135 |
Symmetry code: (i) x, −y+1, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H11ClN4O4 |
Mr | 334.72 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 297 |
a, b, c (Å) | 32.660 (3), 7.1435 (7), 13.4798 (13) |
β (°) | 112.215 (2) |
V (Å3) | 2911.5 (5) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.29 |
Crystal size (mm) | 0.36 × 0.26 × 0.15 |
Data collection | |
Diffractometer | Bruker APEXII CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.904, 0.957 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16146, 4458, 3036 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.716 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.127, 1.04 |
No. of reflections | 4458 |
No. of parameters | 213 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.24, −0.27 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H1N1···O1 | 0.85 (2) | 1.97 (2) | 2.6081 (19) | 131.2 (17) |
C6—H6A···O3i | 0.93 | 2.52 | 3.251 (2) | 135 |
Symmetry code: (i) x, −y+1, z−1/2. |
Acknowledgements
BN, PJ and TK thank the Crystal Materials Research Unit, Prince of Songkla University, for financial support. The authors also thank the Prince of Songkla University and Universiti Sains Malaysia for the Research University Grant No. 1001/PFIZIK/811160.
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. CSD CrossRef Web of Science Google Scholar
Angelusiu, M.-V., Barbuceanu, S.-F., Draghici, C. & Almajan, G.-L. (2010). Eur. J. Med. Chem. 45, 2055–2062. Web of Science CrossRef CAS PubMed Google Scholar
Bendre, R., Murugkar, A., Padhye, S., Kulkarni, P. & Karve, M. (1998). Met. Based Drugs, 5, 59–66. CrossRef PubMed CAS Google Scholar
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Fun, H.-K., Jansrisewangwong, P. & Chantrapromma, S. (2010). Acta Cryst. E66, o2401–o2402. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Fun, H.-K., Nilwanna, B., Jansrisewangwong, P., Kobkeatthawin, T. & Chantrapromma, S. (2011). Acta Cryst. E67, o3202–o3203. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Gokce, M., Utku, S. & Kupeli, E. (2009). Eur. J. Med. Chem. 44, 3760–3764. Web of Science CrossRef PubMed Google Scholar
Jansrisewangwong, P., Chantrapromma, S. & Fun, H.-K. (2010). Acta Cryst. E66, o2170. Web of Science CSD CrossRef IUCr Journals Google Scholar
Li, T.-R., Yang, Z.-Y., Wang, B.-D. & Qin, D.-D. (2008). Eur. J. Med. Chem. 43, 1688–1695. Web of Science CrossRef PubMed Google Scholar
Loncle, C., Brunel, J. M., Vidal, N., Dherbomez, M. & Letourneux, Y. (2004). Eur. J. Med. Chem. 39, 1067–1071. Web of Science CrossRef PubMed CAS Google Scholar
Nilwanna, B., Chantrapromma, S., Jansrisewangwong, P. & Fun, H.-K. (2011). Acta Cryst. E67, o3084–o3085. Web of Science CSD CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS 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.
Hydrazones have been known to be responsible for various bioactivities such as antibacterial (Angelusiu et al., 2010), antioxidant (Li et al., 2008), antifungal (Loncle et al., 2004), anti-inflammatory (Gokce et al., 2009) and also tyrosinase inhibitory (Bendre et al., 1998) activities. With our on-going research on medicinal chemistry, we previously reported the syntheses and crystal structures of some hydrazone derivatives (Fun et al., 2010, 2011; Jansrisewangwong et al., 2010; Nilwanna et al., 2011). Herein we report the crystal structure of the title compound. It was screened for antioxidant and antibacterial activities and found to be inactive.
The title molecule (Fig. 1), C14H11ClN4O4, is twisted and exists in an E configuration with respect to the ethylidene C7═N1 double bond [1.2877 (17) Å] with the torsion angle N2–N1–C7–C8 = -176.69 (13)°. The dihedral angle between the benzene rings of the 2,4-dinitrophenyl and 2-chlorophenyl groups is 38.48 (8)°. The middle ethylidenehydrazine unit (C7/C14/N1/N2) is planar with an r.m.s deviation of 0.0040 (1) Å and the torsion angle of N2–N1–C7–C14 is -1.3 (2)°. This middle C/C/N/N plane makes the dihedral angles of 6.03 (10) and 44.04 (11)° with the 2,4-dinitrophenyl and 2-chlorophenyl rings, respectively. The two nitro groups of 2,4-dinitrophenyl are essentially co-planar with the bound benzene ring with an r.m.s. deviation of 0.0081 (1) Å for the twelve non H-atoms and the O–N–C–C angles are -0.3 (2), 0.2 (2), 0.1 (3) and -0.1 (3)°. An intramolecular N—H···O hydrogen bond between the hydrazone-NH and the ortho nitro group (Fig. 1 and Table 1) generates an S(6) ring motif (Bernstein et al., 1995). The bond distances are within the normal range (Allen et al., 1987) and are comparable with related structures (Fun et al., 2010, 2011; Jansrisewangwong et al., 2010; Nilwanna et al., 2011).
In the crystal structure (Fig. 2), the molecules are linked by weak C—H···O interactions (Table 1) into chains along the c axis in a head-to-head manner. These chains are further stacked along the b axis by a π–π interaction with Cg1···Cg2ii distance of 3.6088 (10) Å [symmetry code: (ii) x, 1 - y, 1/2 + z]; Cg1 and Cg2 are the centroids of C1–C6 and C8–C13 benzene rings, respectively.