organic compounds
N′-[(E)-4-Benzyloxy-2-hydroxybenzylidene]-4-nitrobenzohydrazide dimethylformamide monosolvate
aDepartment of Applied Chemistry, Cochin University of Science and Technology, Kochi 682 022, India, and bDepartment of Chemistry, Faculty of Science, Eastern University, Sri Lanka, Chenkalady, Sri Lanka
*Correspondence e-mail: eesans@yahoo.com
The title compound, C21H17N3O5·C3H7NO, exists in an E conformation with respect to the azomethine double bond of the hydrazide molecule. This molecule contains an intramolecular O—H⋯N hydrogen bond, while an intermolecular N—H⋯O hydrogen bond links the hydrazide to the formamide molecule of solvation. Nonclassical C—H⋯O intermolecular hydrogen bonds build up a supramolecular architecture, together with two C—H⋯π interactions and a weak π–π interaction, with a centroid–centroid distance of 3.650 (13) Å.
Related literature
For the biological and analytical applications of carbohydrazides, see: Vicini et al. (2002); Savini et al. (2002); Grande et al. (2007). For the synthesis of related compounds, see: Mathew & Kurup (2011); Despaigne et al. (2009). For related structures, see: Joseph et al. (2012).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2004); cell APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 2012) and DIAMOND (Brandenburg, 2010); software used to prepare material for publication: SHELXL97 and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536813017091/fj2634sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536813017091/fj2634Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536813017091/fj2634Isup3.cml
The title compound was prepared by adapting a reported procedure (Mathew & Kurup, 2011; Despaigne et al., 2009). A methanolic solution of 4-nitrobenzohydrazide (0.181 g, 1 mmol) was added to a solution of 4-(benzyloxy)-2-hydroxybenzldehyde (0.228 g, 1 mmol) in ethanol and the reaction mixture was refluxed for 5 h after adding a few drops of dilute sulfuric acid. On cooling yellow colored crystals were collected, washed with few drops of methanol, and dried over P4O10 in vacuo. Single crystals of the title compound suitable for X-ray analysis were obtained by recrystallization from a mixture of ethanol and dimethylformamide (1:1 v/v).
All H atoms on C were placed in calculated positions, guided by difference maps, with C–H bond distances 0.93–0.97 Å. H atoms were assigned as Uiso=1.2Ueq (1.5 for Me). N2–H2' and O2–H2O H atoms were located from difference maps and restrained using DFIX instructions. Omitted owing to bad disagreement was the reflection (2 6 2).
Coordination chemistry and biochemistry of
have received increasing interest due to their chelating ability and their antimicrobial, antituberculosis and antitumour activities (Vicini et al. 2002; Savini et al., 2002; Grande et al. 2007). As a continuous work on the hydrazide compounds, a new hydrazide compound, N'-[(E)-4-Benzyloxy-2-hydroxybenzylidene]-4-nitrobenzohydrazide dimethylformamide monosolvate, was prepared and structurally characterized.The compound crystallizes in monoclinic ═O bond length of a similar reported nitrobenzohydrazide compound (Joseph et al., 2012). The aromatic ring (C1–C6) of the compound forms dihedral angles between the other two aromatic rings (C8–C13 and C16–C21) with angles of 67.63 (12) and 61.58 (12)° respectively. There are one classical N2—H2'···O6 and three non-classical C—H···O intermolecular hydrogen bonds (Fig. 2) present in the molecular system with D···A distances of 2.810 (3), 3.167 (3), 3.448 (3) and 3.206 (3) Å (Table 1) respectively. These intermolecular hydrogen bonds chain the molecules along c axis. Moreover, two C—H···π interactions between the H atoms attached at the C12 and C17 atoms and the corresponding aromatic ring C1–C6 of the neighbouring molecules with H···π distances of 3.673 (2) and 3.630 (3) Å respectively, also support the hydrogen bonding to form a one-dimensional layer along c axis. This supramolecular network is augmented by a weak π–π interaction (Fig. 2) between the phenyl rings (C8–C13 and C16–C21) of the molecules with a centroid–centroid distance of 3.650 (13) Å by interconnecting the molecules along b axis. Packing of molecules is predominantly favored by the classical intermolecular hydrogen bonding and C—H···π interactions. Other short ring interactions are very weak as they correspond to their centroid-centroid distances greater than 4 Å. Intramolecular classical hydrogen bond is also observed in the molecular system (Table 1). Fig. 3 shows the packing diagram of the title compound along c axis.
P21/c. This molecule adopts an E configuration (Fig.1) with respect to C14—N1 bond with torsional angles of 177.93 (18)°. The title compound exists in amido form with C15—O3 bond length of 1.217 (3) Å, which is very close to CFor the biological and analytical applications of carbohydrazides, see: Vicini et al. (2002); Savini et al. (2002); Grande et al. (2007). For the synthesis of related compounds, see: Mathew & Kurup (2011); Despaigne et al. (2009). For related structures, see: Joseph et al. (2012).
Data collection: APEX2 (Bruker, 2004); cell
APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 2012) and DIAMOND (Brandenburg, 2010); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010).Fig. 1. ORTEP view of the title compound drawn with 50% probability displacement ellipsoids for the non-H atoms. | |
Fig. 2. Hydrogen-bonding, C—H···π and π–π interactions present in the crystal structure of C21H17N3O5.C3H7NO. | |
Fig. 3. Packing diagram of the compound along c axis. |
C21H17N3O5·C3H7NO | F(000) = 976 |
Mr = 464.47 | Dx = 1.351 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3347 reflections |
a = 10.0160 (8) Å | θ = 2.7–27.6° |
b = 22.661 (2) Å | µ = 0.10 mm−1 |
c = 10.2611 (11) Å | T = 296 K |
β = 101.392 (5)° | Block, yellow |
V = 2283.1 (4) Å3 | 0.40 × 0.20 × 0.20 mm |
Z = 4 |
Bruker Kappa APEXII CCD diffractometer | 4910 independent reflections |
Radiation source: fine-focus sealed tube | 2901 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.031 |
ω and φ scan | θmax = 27.0°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −12→11 |
Tmin = 0.977, Tmax = 0.981 | k = −28→28 |
16107 measured reflections | l = −13→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)] = 0.053 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.176 | w = 1/[σ2(Fo2) + (0.0894P)2 + 0.2279P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max < 0.001 |
4910 reflections | Δρmax = 0.40 e Å−3 |
318 parameters | Δρmin = −0.22 e Å−3 |
2 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: 0.0078 (15) |
C21H17N3O5·C3H7NO | V = 2283.1 (4) Å3 |
Mr = 464.47 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.0160 (8) Å | µ = 0.10 mm−1 |
b = 22.661 (2) Å | T = 296 K |
c = 10.2611 (11) Å | 0.40 × 0.20 × 0.20 mm |
β = 101.392 (5)° |
Bruker Kappa APEXII CCD diffractometer | 4910 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 2901 reflections with I > 2σ(I) |
Tmin = 0.977, Tmax = 0.981 | Rint = 0.031 |
16107 measured reflections |
R[F2 > 2σ(F2)] = 0.053 | 2 restraints |
wR(F2) = 0.176 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.40 e Å−3 |
4910 reflections | Δρmin = −0.22 e Å−3 |
318 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 | ||
O1 | 0.07170 (14) | −0.02077 (7) | 0.19458 (16) | 0.0520 (4) | |
O2 | 0.50913 (16) | 0.05541 (8) | 0.38186 (17) | 0.0554 (5) | |
O3 | 0.87382 (16) | 0.10480 (8) | 0.40720 (18) | 0.0605 (5) | |
O4 | 1.4753 (2) | 0.21761 (12) | 0.2984 (3) | 0.1028 (9) | |
O5 | 1.4051 (2) | 0.21112 (11) | 0.0893 (3) | 0.0926 (8) | |
O6 | 0.7557 (2) | 0.15662 (12) | −0.0661 (2) | 0.0952 (8) | |
N1 | 0.65997 (16) | 0.08803 (8) | 0.2177 (2) | 0.0430 (5) | |
N2 | 0.77984 (17) | 0.10975 (8) | 0.1910 (2) | 0.0435 (5) | |
N3 | 1.3896 (2) | 0.20500 (9) | 0.2026 (3) | 0.0619 (6) | |
N4 | 0.71736 (19) | 0.18185 (9) | −0.2805 (2) | 0.0540 (5) | |
C1 | −0.0899 (2) | −0.12417 (10) | 0.2521 (3) | 0.0543 (6) | |
H1 | −0.0142 | −0.1398 | 0.2244 | 0.065* | |
C2 | −0.2068 (3) | −0.15693 (11) | 0.2395 (3) | 0.0631 (7) | |
H2A | −0.2098 | −0.1947 | 0.2036 | 0.076* | |
C3 | −0.3193 (2) | −0.13453 (11) | 0.2792 (3) | 0.0574 (7) | |
H3 | −0.3983 | −0.1570 | 0.2701 | 0.069* | |
C4 | −0.3152 (2) | −0.07925 (11) | 0.3320 (3) | 0.0544 (6) | |
H4 | −0.3911 | −0.0639 | 0.3599 | 0.065* | |
C5 | −0.1976 (2) | −0.04604 (10) | 0.3440 (2) | 0.0453 (6) | |
H5 | −0.1955 | −0.0081 | 0.3787 | 0.054* | |
C6 | −0.0841 (2) | −0.06820 (9) | 0.3056 (2) | 0.0407 (5) | |
C7 | 0.0453 (2) | −0.03359 (10) | 0.3232 (2) | 0.0459 (6) | |
H7A | 0.0366 | 0.0028 | 0.3707 | 0.055* | |
H7B | 0.1199 | −0.0563 | 0.3742 | 0.055* | |
C8 | 0.19366 (19) | 0.00386 (9) | 0.1859 (2) | 0.0389 (5) | |
C9 | 0.2933 (2) | 0.01794 (9) | 0.2933 (2) | 0.0407 (5) | |
H9 | 0.2796 | 0.0112 | 0.3791 | 0.049* | |
C10 | 0.41497 (19) | 0.04237 (9) | 0.2735 (2) | 0.0378 (5) | |
C11 | 0.43622 (19) | 0.05309 (9) | 0.1444 (2) | 0.0370 (5) | |
C12 | 0.3322 (2) | 0.03864 (10) | 0.0385 (2) | 0.0438 (5) | |
H12 | 0.3443 | 0.0459 | −0.0477 | 0.053* | |
C13 | 0.2125 (2) | 0.01410 (10) | 0.0570 (2) | 0.0443 (5) | |
H13 | 0.1446 | 0.0044 | −0.0156 | 0.053* | |
C14 | 0.5624 (2) | 0.07781 (9) | 0.1208 (2) | 0.0413 (5) | |
H14 | 0.5722 | 0.0862 | 0.0344 | 0.050* | |
C15 | 0.8836 (2) | 0.11689 (9) | 0.2939 (2) | 0.0409 (5) | |
C16 | 1.0138 (2) | 0.14008 (9) | 0.2640 (2) | 0.0389 (5) | |
C17 | 1.1128 (2) | 0.15662 (10) | 0.3697 (3) | 0.0504 (6) | |
H17 | 1.0960 | 0.1535 | 0.4554 | 0.060* | |
C18 | 1.2367 (2) | 0.17777 (11) | 0.3517 (3) | 0.0536 (6) | |
H18 | 1.3035 | 0.1890 | 0.4239 | 0.064* | |
C19 | 1.2585 (2) | 0.18182 (9) | 0.2247 (3) | 0.0456 (6) | |
C20 | 1.1643 (2) | 0.16467 (12) | 0.1179 (3) | 0.0596 (7) | |
H20 | 1.1825 | 0.1672 | 0.0326 | 0.072* | |
C21 | 1.0410 (2) | 0.14332 (12) | 0.1380 (3) | 0.0566 (7) | |
H21 | 0.9756 | 0.1310 | 0.0656 | 0.068* | |
C22 | 0.7086 (3) | 0.14686 (13) | −0.1811 (4) | 0.0675 (8) | |
H22 | 0.6620 | 0.1115 | −0.2011 | 0.081* | |
C23 | 0.6524 (4) | 0.1653 (2) | −0.4133 (4) | 0.1072 (13) | |
H23A | 0.6184 | 0.1257 | −0.4128 | 0.161* | |
H23B | 0.7172 | 0.1674 | −0.4706 | 0.161* | |
H23C | 0.5782 | 0.1917 | −0.4450 | 0.161* | |
C24 | 0.7845 (4) | 0.23712 (15) | −0.2607 (5) | 0.1139 (15) | |
H24A | 0.8578 | 0.2379 | −0.3085 | 0.171* | |
H24B | 0.8202 | 0.2428 | −0.1676 | 0.171* | |
H24C | 0.7210 | 0.2681 | −0.2927 | 0.171* | |
H2' | 0.784 (2) | 0.1204 (10) | 0.1096 (12) | 0.046 (7)* | |
H2O | 0.580 (2) | 0.0665 (14) | 0.355 (3) | 0.101 (12)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0393 (8) | 0.0784 (11) | 0.0368 (10) | −0.0205 (7) | 0.0040 (7) | 0.0106 (8) |
O2 | 0.0456 (9) | 0.0794 (12) | 0.0386 (10) | −0.0217 (8) | 0.0021 (8) | 0.0011 (9) |
O3 | 0.0497 (9) | 0.0889 (13) | 0.0435 (11) | −0.0115 (8) | 0.0101 (8) | 0.0135 (10) |
O4 | 0.0555 (12) | 0.156 (2) | 0.093 (2) | −0.0442 (13) | 0.0046 (12) | 0.0068 (17) |
O5 | 0.0732 (14) | 0.1240 (19) | 0.0883 (19) | −0.0293 (12) | 0.0346 (13) | 0.0187 (15) |
O6 | 0.0904 (16) | 0.135 (2) | 0.0553 (15) | 0.0031 (13) | 0.0032 (13) | 0.0299 (15) |
N1 | 0.0351 (9) | 0.0479 (10) | 0.0477 (13) | −0.0049 (7) | 0.0121 (9) | 0.0053 (9) |
N2 | 0.0372 (9) | 0.0523 (11) | 0.0428 (13) | −0.0069 (8) | 0.0121 (9) | 0.0068 (10) |
N3 | 0.0455 (12) | 0.0616 (13) | 0.0805 (19) | −0.0063 (9) | 0.0169 (13) | 0.0116 (13) |
N4 | 0.0539 (11) | 0.0587 (12) | 0.0504 (14) | 0.0043 (9) | 0.0130 (10) | 0.0082 (11) |
C1 | 0.0560 (14) | 0.0531 (14) | 0.0583 (18) | −0.0020 (11) | 0.0222 (13) | −0.0001 (12) |
C2 | 0.0785 (18) | 0.0465 (13) | 0.069 (2) | −0.0189 (12) | 0.0264 (16) | −0.0068 (13) |
C3 | 0.0500 (13) | 0.0650 (16) | 0.0575 (18) | −0.0217 (11) | 0.0111 (12) | 0.0049 (14) |
C4 | 0.0387 (12) | 0.0662 (16) | 0.0592 (18) | −0.0036 (10) | 0.0115 (12) | 0.0052 (13) |
C5 | 0.0458 (12) | 0.0472 (12) | 0.0432 (15) | −0.0044 (9) | 0.0094 (10) | 0.0019 (11) |
C6 | 0.0391 (11) | 0.0490 (12) | 0.0335 (13) | −0.0055 (9) | 0.0056 (9) | 0.0066 (10) |
C7 | 0.0397 (11) | 0.0599 (14) | 0.0375 (14) | −0.0100 (9) | 0.0064 (10) | 0.0058 (11) |
C8 | 0.0350 (10) | 0.0448 (12) | 0.0361 (13) | −0.0052 (8) | 0.0049 (9) | 0.0061 (10) |
C9 | 0.0410 (11) | 0.0499 (12) | 0.0323 (13) | −0.0087 (9) | 0.0096 (10) | 0.0051 (10) |
C10 | 0.0358 (10) | 0.0409 (11) | 0.0351 (13) | −0.0031 (8) | 0.0035 (9) | 0.0005 (10) |
C11 | 0.0344 (10) | 0.0412 (11) | 0.0359 (13) | 0.0003 (8) | 0.0082 (9) | 0.0017 (9) |
C12 | 0.0442 (12) | 0.0561 (13) | 0.0319 (13) | −0.0037 (9) | 0.0095 (10) | 0.0047 (10) |
C13 | 0.0376 (11) | 0.0578 (13) | 0.0345 (13) | −0.0071 (9) | −0.0001 (10) | 0.0023 (11) |
C14 | 0.0398 (11) | 0.0458 (12) | 0.0407 (14) | −0.0005 (9) | 0.0135 (10) | 0.0046 (10) |
C15 | 0.0383 (11) | 0.0431 (12) | 0.0418 (15) | −0.0002 (8) | 0.0087 (10) | 0.0048 (10) |
C16 | 0.0374 (10) | 0.0377 (11) | 0.0421 (14) | 0.0013 (8) | 0.0091 (10) | 0.0038 (10) |
C17 | 0.0484 (13) | 0.0608 (14) | 0.0415 (15) | −0.0074 (10) | 0.0078 (11) | 0.0054 (12) |
C18 | 0.0439 (13) | 0.0612 (15) | 0.0518 (17) | −0.0110 (10) | −0.0003 (12) | 0.0038 (12) |
C19 | 0.0371 (11) | 0.0424 (12) | 0.0585 (17) | −0.0011 (9) | 0.0125 (11) | 0.0057 (11) |
C20 | 0.0502 (14) | 0.0867 (18) | 0.0447 (17) | −0.0078 (12) | 0.0162 (13) | 0.0039 (14) |
C21 | 0.0411 (12) | 0.0855 (18) | 0.0430 (16) | −0.0138 (11) | 0.0081 (11) | −0.0016 (13) |
C22 | 0.0493 (15) | 0.0691 (17) | 0.083 (3) | 0.0012 (12) | 0.0110 (16) | 0.0108 (18) |
C23 | 0.091 (2) | 0.169 (4) | 0.060 (2) | 0.023 (2) | 0.0116 (19) | −0.025 (2) |
C24 | 0.099 (3) | 0.071 (2) | 0.177 (5) | −0.0164 (18) | 0.041 (3) | 0.016 (2) |
O1—C8 | 1.362 (2) | C8—C9 | 1.371 (3) |
O1—C7 | 1.426 (3) | C8—C13 | 1.392 (3) |
O2—C10 | 1.341 (3) | C9—C10 | 1.389 (3) |
O2—H2O | 0.847 (10) | C9—H9 | 0.9300 |
O3—C15 | 1.217 (3) | C10—C11 | 1.403 (3) |
O4—N3 | 1.205 (3) | C11—C12 | 1.388 (3) |
O5—N3 | 1.211 (3) | C11—C14 | 1.446 (3) |
O6—C22 | 1.201 (4) | C12—C13 | 1.369 (3) |
N1—C14 | 1.271 (3) | C12—H12 | 0.9300 |
N1—N2 | 1.374 (2) | C13—H13 | 0.9300 |
N2—C15 | 1.337 (3) | C14—H14 | 0.9300 |
N2—H2' | 0.879 (10) | C15—C16 | 1.493 (3) |
N3—C19 | 1.472 (3) | C16—C17 | 1.370 (3) |
N4—C22 | 1.308 (4) | C16—C21 | 1.375 (3) |
N4—C24 | 1.417 (4) | C17—C18 | 1.376 (3) |
N4—C23 | 1.439 (4) | C17—H17 | 0.9300 |
C1—C2 | 1.371 (3) | C18—C19 | 1.367 (3) |
C1—C6 | 1.379 (3) | C18—H18 | 0.9300 |
C1—H1 | 0.9300 | C19—C20 | 1.354 (4) |
C2—C3 | 1.369 (4) | C20—C21 | 1.380 (3) |
C2—H2A | 0.9300 | C20—H20 | 0.9300 |
C3—C4 | 1.363 (3) | C21—H21 | 0.9300 |
C3—H3 | 0.9300 | C22—H22 | 0.9300 |
C4—C5 | 1.383 (3) | C23—H23A | 0.9600 |
C4—H4 | 0.9300 | C23—H23B | 0.9600 |
C5—C6 | 1.370 (3) | C23—H23C | 0.9600 |
C5—H5 | 0.9300 | C24—H24A | 0.9600 |
C6—C7 | 1.495 (3) | C24—H24B | 0.9600 |
C7—H7A | 0.9700 | C24—H24C | 0.9600 |
C7—H7B | 0.9700 | ||
C8—O1—C7 | 118.47 (17) | C10—C11—C14 | 121.7 (2) |
C10—O2—H2O | 107 (2) | C13—C12—C11 | 122.0 (2) |
C14—N1—N2 | 118.4 (2) | C13—C12—H12 | 119.0 |
C15—N2—N1 | 117.33 (19) | C11—C12—H12 | 119.0 |
C15—N2—H2' | 122.7 (14) | C12—C13—C8 | 119.1 (2) |
N1—N2—H2' | 119.9 (14) | C12—C13—H13 | 120.5 |
O4—N3—O5 | 123.4 (2) | C8—C13—H13 | 120.5 |
O4—N3—C19 | 118.2 (2) | N1—C14—C11 | 120.1 (2) |
O5—N3—C19 | 118.4 (2) | N1—C14—H14 | 119.9 |
C22—N4—C24 | 121.8 (3) | C11—C14—H14 | 119.9 |
C22—N4—C23 | 119.5 (3) | O3—C15—N2 | 122.03 (19) |
C24—N4—C23 | 118.6 (3) | O3—C15—C16 | 120.9 (2) |
C2—C1—C6 | 120.3 (2) | N2—C15—C16 | 117.0 (2) |
C2—C1—H1 | 119.9 | C17—C16—C21 | 118.9 (2) |
C6—C1—H1 | 119.9 | C17—C16—C15 | 117.3 (2) |
C3—C2—C1 | 120.6 (2) | C21—C16—C15 | 123.7 (2) |
C3—C2—H2A | 119.7 | C16—C17—C18 | 121.3 (2) |
C1—C2—H2A | 119.7 | C16—C17—H17 | 119.3 |
C4—C3—C2 | 119.8 (2) | C18—C17—H17 | 119.3 |
C4—C3—H3 | 120.1 | C19—C18—C17 | 118.0 (2) |
C2—C3—H3 | 120.1 | C19—C18—H18 | 121.0 |
C3—C4—C5 | 119.6 (2) | C17—C18—H18 | 121.0 |
C3—C4—H4 | 120.2 | C20—C19—C18 | 122.4 (2) |
C5—C4—H4 | 120.2 | C20—C19—N3 | 118.5 (2) |
C6—C5—C4 | 121.0 (2) | C18—C19—N3 | 119.1 (2) |
C6—C5—H5 | 119.5 | C19—C20—C21 | 118.7 (2) |
C4—C5—H5 | 119.5 | C19—C20—H20 | 120.6 |
C5—C6—C1 | 118.66 (19) | C21—C20—H20 | 120.6 |
C5—C6—C7 | 121.5 (2) | C16—C21—C20 | 120.6 (2) |
C1—C6—C7 | 119.9 (2) | C16—C21—H21 | 119.7 |
O1—C7—C6 | 108.03 (18) | C20—C21—H21 | 119.7 |
O1—C7—H7A | 110.1 | O6—C22—N4 | 125.5 (3) |
C6—C7—H7A | 110.1 | O6—C22—H22 | 117.3 |
O1—C7—H7B | 110.1 | N4—C22—H22 | 117.3 |
C6—C7—H7B | 110.1 | N4—C23—H23A | 109.5 |
H7A—C7—H7B | 108.4 | N4—C23—H23B | 109.5 |
O1—C8—C9 | 124.2 (2) | H23A—C23—H23B | 109.5 |
O1—C8—C13 | 114.98 (19) | N4—C23—H23C | 109.5 |
C9—C8—C13 | 120.79 (19) | H23A—C23—H23C | 109.5 |
C8—C9—C10 | 119.7 (2) | H23B—C23—H23C | 109.5 |
C8—C9—H9 | 120.2 | N4—C24—H24A | 109.5 |
C10—C9—H9 | 120.2 | N4—C24—H24B | 109.5 |
O2—C10—C9 | 117.4 (2) | H24A—C24—H24B | 109.5 |
O2—C10—C11 | 122.09 (18) | N4—C24—H24C | 109.5 |
C9—C10—C11 | 120.6 (2) | H24A—C24—H24C | 109.5 |
C12—C11—C10 | 117.91 (18) | H24B—C24—H24C | 109.5 |
C12—C11—C14 | 120.3 (2) | ||
C14—N1—N2—C15 | −176.17 (19) | C9—C8—C13—C12 | −0.1 (3) |
C6—C1—C2—C3 | 0.3 (4) | N2—N1—C14—C11 | 177.93 (18) |
C1—C2—C3—C4 | −0.2 (4) | C12—C11—C14—N1 | −176.3 (2) |
C2—C3—C4—C5 | 0.6 (4) | C10—C11—C14—N1 | 3.1 (3) |
C3—C4—C5—C6 | −1.1 (4) | N1—N2—C15—O3 | 0.0 (3) |
C4—C5—C6—C1 | 1.2 (4) | N1—N2—C15—C16 | 179.57 (17) |
C4—C5—C6—C7 | −177.5 (2) | O3—C15—C16—C17 | −10.9 (3) |
C2—C1—C6—C5 | −0.8 (4) | N2—C15—C16—C17 | 169.57 (19) |
C2—C1—C6—C7 | 177.9 (2) | O3—C15—C16—C21 | 166.3 (2) |
C8—O1—C7—C6 | −171.59 (18) | N2—C15—C16—C21 | −13.2 (3) |
C5—C6—C7—O1 | −115.3 (2) | C21—C16—C17—C18 | 1.8 (4) |
C1—C6—C7—O1 | 66.1 (3) | C15—C16—C17—C18 | 179.2 (2) |
C7—O1—C8—C9 | −0.8 (3) | C16—C17—C18—C19 | −0.1 (4) |
C7—O1—C8—C13 | 178.96 (19) | C17—C18—C19—C20 | −1.4 (4) |
O1—C8—C9—C10 | 179.29 (19) | C17—C18—C19—N3 | 179.2 (2) |
C13—C8—C9—C10 | −0.4 (3) | O4—N3—C19—C20 | −176.6 (3) |
C8—C9—C10—O2 | 179.93 (19) | O5—N3—C19—C20 | 4.3 (3) |
C8—C9—C10—C11 | 0.4 (3) | O4—N3—C19—C18 | 2.7 (3) |
O2—C10—C11—C12 | −179.36 (19) | O5—N3—C19—C18 | −176.4 (2) |
C9—C10—C11—C12 | 0.1 (3) | C18—C19—C20—C21 | 1.2 (4) |
O2—C10—C11—C14 | 1.3 (3) | N3—C19—C20—C21 | −179.5 (2) |
C9—C10—C11—C14 | −179.25 (19) | C17—C16—C21—C20 | −2.1 (4) |
C10—C11—C12—C13 | −0.7 (3) | C15—C16—C21—C20 | −179.3 (2) |
C14—C11—C12—C13 | 178.7 (2) | C19—C20—C21—C16 | 0.6 (4) |
C11—C12—C13—C8 | 0.7 (3) | C24—N4—C22—O6 | −0.9 (4) |
O1—C8—C13—C12 | −179.87 (19) | C23—N4—C22—O6 | −178.2 (3) |
Cg1 is the centroid of the C1-C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2′···O6 | 0.88 (1) | 1.95 (1) | 2.810 (3) | 166 (2) |
O2—H2O···N1 | 0.85 (1) | 1.82 (2) | 2.583 (2) | 149 (3) |
C7—H7B···O3i | 0.97 | 2.49 | 3.167 (3) | 127 |
C13—H13···O1ii | 0.93 | 2.58 | 3.448 (3) | 156 |
C21—H21···O6 | 0.93 | 2.42 | 3.206 (3) | 143 |
C12—H12···Cg1ii | 0.93 | 2.91 | 3.673 (2) | 140 |
C17—H17···Cg1i | 0.93 | 2.85 | 3.630 (3) | 142 |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C21H17N3O5·C3H7NO |
Mr | 464.47 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 10.0160 (8), 22.661 (2), 10.2611 (11) |
β (°) | 101.392 (5) |
V (Å3) | 2283.1 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.40 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.977, 0.981 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16107, 4910, 2901 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.053, 0.176, 1.04 |
No. of reflections | 4910 |
No. of parameters | 318 |
No. of restraints | 2 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.40, −0.22 |
Computer programs: APEX2 (Bruker, 2004), APEX2 and SAINT (Bruker, 2004), SAINT and XPREP (Bruker, 2004), SHELXS97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 2012) and DIAMOND (Brandenburg, 2010), SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010).
Cg1 is the centroid of the C1-C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2'···O6 | 0.879 (10) | 1.950 (11) | 2.810 (3) | 166 (2) |
O2—H2O···N1 | 0.847 (10) | 1.82 (2) | 2.583 (2) | 149 (3) |
C7—H7B···O3i | 0.97 | 2.49 | 3.167 (3) | 127 |
C13—H13···O1ii | 0.93 | 2.58 | 3.448 (3) | 156 |
C21—H21···O6 | 0.93 | 2.42 | 3.206 (3) | 143 |
C12—H12···Cg1ii | 0.93 | 2.91 | 3.673 (2) | 140 |
C17—H17···Cg1i | 0.93 | 2.85 | 3.630 (3) | 142 |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x, −y, −z. |
Acknowledgements
BJ is grateful to the Council for Scientific and Industrial Research, New Delhi, India, for the award of a Senior Research Fellowship. MRPK is grateful to UGC, New Delhi, for a UGC-BSR one-time grant to Faculty. The authors are grateful to Dr Matthias Zeller, Department of Chemistry, Youngstown State University, for the support with data
The authors are grateful to the Sophisticated Analytical Instruments Facility, Cochin University of Science and Technology, Kochi-22, India for the single-crystal X-ray diffraction measurements.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.
Coordination chemistry and biochemistry of hydrazones have received increasing interest due to their chelating ability and their antimicrobial, antituberculosis and antitumour activities (Vicini et al. 2002; Savini et al., 2002; Grande et al. 2007). As a continuous work on the hydrazide compounds, a new hydrazide compound, N'-[(E)-4-Benzyloxy-2-hydroxybenzylidene]-4-nitrobenzohydrazide dimethylformamide monosolvate, was prepared and structurally characterized.
The compound crystallizes in monoclinic space group P21/c. This molecule adopts an E configuration (Fig.1) with respect to C14—N1 bond with torsional angles of 177.93 (18)°. The title compound exists in amido form with C15—O3 bond length of 1.217 (3) Å, which is very close to C═O bond length of a similar reported nitrobenzohydrazide compound (Joseph et al., 2012). The aromatic ring (C1–C6) of the compound forms dihedral angles between the other two aromatic rings (C8–C13 and C16–C21) with angles of 67.63 (12) and 61.58 (12)° respectively. There are one classical N2—H2'···O6 and three non-classical C—H···O intermolecular hydrogen bonds (Fig. 2) present in the molecular system with D···A distances of 2.810 (3), 3.167 (3), 3.448 (3) and 3.206 (3) Å (Table 1) respectively. These intermolecular hydrogen bonds chain the molecules along c axis. Moreover, two C—H···π interactions between the H atoms attached at the C12 and C17 atoms and the corresponding aromatic ring C1–C6 of the neighbouring molecules with H···π distances of 3.673 (2) and 3.630 (3) Å respectively, also support the hydrogen bonding to form a one-dimensional layer along c axis. This supramolecular network is augmented by a weak π–π interaction (Fig. 2) between the phenyl rings (C8–C13 and C16–C21) of the molecules with a centroid–centroid distance of 3.650 (13) Å by interconnecting the molecules along b axis. Packing of molecules is predominantly favored by the classical intermolecular hydrogen bonding and C—H···π interactions. Other short ring interactions are very weak as they correspond to their centroid-centroid distances greater than 4 Å. Intramolecular classical hydrogen bond is also observed in the molecular system (Table 1). Fig. 3 shows the packing diagram of the title compound along c axis.