organic compounds
4-Nitro-N′-[(E)-3-pyridylmethylidene]benzohydrazide
aInstitute of Chemistry, University of the Punjab, Lahore 54590, Pakistan, bApplied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore 54600, Pakistan, and cDepartment of Chemistry, The University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
*Correspondence e-mail: rehman_pcsir@hotmail.com
In the title moleclue, C13H10N4O3, the methylidene–hydrazide [–C(=O)—N—N=C–] fragment is essentially planar, with a maximum deviation of 0.0228 (7) Å. The mean planes of the benzene and pyridine rings make dihedral angles of 25.44 (6) and 5.47 (7)°, respectively, with the mean plane of the methylidene–hydrazide fragment. In the intermolecular N—H⋯N hydrogen bonds link molecules into chains along the b axis. Additional stabilization is provided by weak intermolecular C—H⋯O hydrogen bonds. The O atoms of the nitro group are disordered over two sets of sites of equal occupancy.
Related literature
For the synthesis of related compounds, see: Zia-ur-Rehman et al. (2009). For the biological activity of benzohydrazides, see: Chakraborty & Patel (1996). For closely related structures, see: Raj et al. (2008); Fun et al. (2008); Wang et al. (2008); Qiu et al. (2009).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell 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, 1997); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536810011244/lh5020sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810011244/lh5020Isup2.hkl
A mixture of para-nitrobenzohydrazide (0.5 g, 2.76 mmoles), pyridine-3-carbaldehyde (0.26 ml, 2.76 mmoles), orthophosphoric acid (0.2 ml) and methanol (50.0 ml) was heated to reflux for a period of 3.5 hours followed by removal of the solvent under vacuum. The contents were allowed to cool and washed with cold methanol to yield the title compound. Crystals suitable for X-ray crystallographic studies were grown from a methanol solution of the title compound at room temperature by slow evaporation. Yield: 92%. M.p. 547 K.
Though all the H atoms could be distinguished in the difference Fourier map the H-atoms bonded to C-atoms were included at geometrically idealized positions and refined in riding-model approximation with N—H = 0.88 Å and C—H = 0.95 Å; the Uiso(H) were allowed at 1.2Ueq(C/N). The final difference map was essentially featurless. The nitro group was disordered over two sites with N and O atoms occupying equal site occupancy factors, commands SIMU and EADP in SHELXL-97 (Sheldrick, 2008) were used to model the disorder.
Data collection: APEX2 (Bruker, 2004); cell
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, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The asymmetric unit of the title compound with the displacement ellipsoids plotted at 50% probability level (Farrugia, 1997); nitro group was disordered over two sites. |
C13H10N4O3 | F(000) = 560 |
Mr = 270.25 | Dx = 1.471 Mg m−3 |
Monoclinic, P21/c | Melting point: 547 K |
Hall symbol: -P 2ybc | Cu Kα radiation, λ = 1.54178 Å |
a = 14.6158 (3) Å | Cell parameters from 10114 reflections |
b = 8.1969 (2) Å | θ = 3.0–68.0° |
c = 10.3645 (2) Å | µ = 0.91 mm−1 |
β = 100.609 (1)° | T = 123 K |
V = 1220.49 (5) Å3 | Plate, yellow |
Z = 4 | 0.20 × 0.16 × 0.05 mm |
Bruker APEXII diffractometer | 2192 independent reflections |
Radiation source: fine-focus sealed tube | 2098 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.016 |
ω and ϕ scans | θmax = 68.0°, θmin = 3.0° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −17→17 |
Tmin = 0.839, Tmax = 0.956 | k = −9→9 |
10114 measured reflections | l = −12→12 |
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)] = 0.036 | Hydrogen site location: difference Fourier map |
wR(F2) = 0.094 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0485P)2 + 0.519P] where P = (Fo2 + 2Fc2)/3 |
2192 reflections | (Δ/σ)max = 0.001 |
190 parameters | Δρmax = 0.26 e Å−3 |
66 restraints | Δρmin = −0.26 e Å−3 |
C13H10N4O3 | V = 1220.49 (5) Å3 |
Mr = 270.25 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 14.6158 (3) Å | µ = 0.91 mm−1 |
b = 8.1969 (2) Å | T = 123 K |
c = 10.3645 (2) Å | 0.20 × 0.16 × 0.05 mm |
β = 100.609 (1)° |
Bruker APEXII diffractometer | 2192 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 2098 reflections with I > 2σ(I) |
Tmin = 0.839, Tmax = 0.956 | Rint = 0.016 |
10114 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 66 restraints |
wR(F2) = 0.094 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.26 e Å−3 |
2192 reflections | Δρmin = −0.26 e Å−3 |
190 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 | Occ. (<1) | |
N1 | −0.0353 (11) | 0.277 (2) | 0.3850 (9) | 0.0354 (16) | 0.50 |
O1 | −0.086 (3) | 0.336 (5) | 0.295 (3) | 0.059 (3) | 0.50 |
O2 | −0.0552 (6) | 0.1587 (11) | 0.4450 (5) | 0.0550 (12) | 0.50 |
N1' | −0.0292 (11) | 0.259 (2) | 0.4237 (9) | 0.0354 (16) | 0.50 |
O1' | −0.082 (3) | 0.311 (5) | 0.321 (3) | 0.059 (3) | 0.50 |
O2' | −0.0525 (6) | 0.1572 (11) | 0.4997 (5) | 0.0550 (12) | 0.50 |
O3 | 0.36776 (6) | 0.53420 (11) | 0.67517 (8) | 0.0267 (2) | |
N2 | 0.37145 (6) | 0.60961 (12) | 0.46461 (9) | 0.0179 (2) | |
H2N | 0.3442 | 0.6031 | 0.3817 | 0.022* | |
N3 | 0.45517 (6) | 0.69107 (12) | 0.49965 (9) | 0.0183 (2) | |
N4 | 0.66815 (7) | 1.02086 (12) | 0.31200 (10) | 0.0203 (2) | |
C1 | 0.23641 (8) | 0.46958 (15) | 0.51171 (12) | 0.0203 (3) | |
C2 | 0.17661 (9) | 0.52595 (17) | 0.40038 (13) | 0.0261 (3) | |
H2 | 0.1965 | 0.6096 | 0.3484 | 0.031* | |
C3 | 0.08809 (9) | 0.46038 (19) | 0.36515 (14) | 0.0329 (3) | |
H3 | 0.0466 | 0.4988 | 0.2898 | 0.040* | |
C4 | 0.06168 (9) | 0.33806 (18) | 0.44215 (16) | 0.0352 (4) | |
C5 | 0.11925 (10) | 0.27997 (17) | 0.55309 (16) | 0.0361 (4) | |
H5 | 0.0992 | 0.1953 | 0.6040 | 0.043* | |
C6 | 0.20687 (9) | 0.34797 (16) | 0.58836 (14) | 0.0280 (3) | |
H6 | 0.2472 | 0.3114 | 0.6655 | 0.034* | |
C7 | 0.33183 (8) | 0.54003 (14) | 0.55923 (11) | 0.0189 (3) | |
C8 | 0.48376 (8) | 0.75796 (14) | 0.40288 (11) | 0.0182 (3) | |
H8 | 0.4490 | 0.7430 | 0.3168 | 0.022* | |
C9 | 0.56840 (8) | 0.85680 (14) | 0.42110 (11) | 0.0179 (3) | |
C10 | 0.59341 (8) | 0.92553 (15) | 0.30967 (11) | 0.0191 (3) | |
H10 | 0.5552 | 0.9035 | 0.2270 | 0.023* | |
C11 | 0.72083 (8) | 1.05187 (15) | 0.42965 (12) | 0.0212 (3) | |
H11 | 0.7744 | 1.1186 | 0.4334 | 0.025* | |
C12 | 0.70067 (8) | 0.99095 (15) | 0.54626 (12) | 0.0219 (3) | |
H12 | 0.7395 | 1.0168 | 0.6277 | 0.026* | |
C13 | 0.62364 (8) | 0.89241 (15) | 0.54267 (11) | 0.0201 (3) | |
H13 | 0.6085 | 0.8497 | 0.6213 | 0.024* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0219 (18) | 0.035 (3) | 0.051 (5) | −0.0047 (17) | 0.010 (4) | −0.013 (4) |
O1 | 0.027 (3) | 0.086 (9) | 0.059 (8) | −0.015 (4) | −0.004 (5) | −0.022 (6) |
O2 | 0.0311 (8) | 0.0435 (8) | 0.093 (4) | −0.0147 (6) | 0.018 (3) | 0.007 (3) |
N1' | 0.0219 (18) | 0.035 (3) | 0.051 (5) | −0.0047 (17) | 0.010 (4) | −0.013 (4) |
O1' | 0.027 (3) | 0.086 (9) | 0.059 (8) | −0.015 (4) | −0.004 (5) | −0.022 (6) |
O2' | 0.0311 (8) | 0.0435 (8) | 0.093 (4) | −0.0147 (6) | 0.018 (3) | 0.007 (3) |
O3 | 0.0277 (5) | 0.0329 (5) | 0.0186 (4) | −0.0062 (4) | 0.0022 (3) | 0.0030 (4) |
N2 | 0.0158 (5) | 0.0208 (5) | 0.0168 (5) | −0.0024 (4) | 0.0021 (4) | −0.0006 (4) |
N3 | 0.0156 (5) | 0.0187 (5) | 0.0205 (5) | −0.0013 (4) | 0.0030 (4) | −0.0014 (4) |
N4 | 0.0184 (5) | 0.0215 (5) | 0.0215 (5) | 0.0005 (4) | 0.0053 (4) | 0.0010 (4) |
C1 | 0.0192 (6) | 0.0194 (6) | 0.0240 (6) | −0.0001 (4) | 0.0080 (5) | −0.0052 (5) |
C2 | 0.0207 (6) | 0.0318 (7) | 0.0263 (6) | −0.0023 (5) | 0.0058 (5) | −0.0034 (5) |
C3 | 0.0207 (6) | 0.0429 (8) | 0.0345 (7) | −0.0011 (6) | 0.0032 (5) | −0.0121 (6) |
C4 | 0.0184 (6) | 0.0315 (7) | 0.0579 (9) | −0.0057 (5) | 0.0130 (6) | −0.0211 (7) |
C5 | 0.0293 (7) | 0.0217 (7) | 0.0631 (10) | −0.0037 (5) | 0.0234 (7) | −0.0006 (7) |
C6 | 0.0252 (6) | 0.0227 (6) | 0.0387 (7) | 0.0003 (5) | 0.0126 (5) | 0.0015 (6) |
C7 | 0.0197 (6) | 0.0167 (6) | 0.0206 (6) | 0.0005 (4) | 0.0045 (4) | −0.0013 (5) |
C8 | 0.0178 (5) | 0.0181 (6) | 0.0182 (5) | 0.0010 (4) | 0.0021 (4) | −0.0005 (4) |
C9 | 0.0170 (6) | 0.0163 (6) | 0.0206 (6) | 0.0023 (4) | 0.0040 (4) | −0.0012 (4) |
C10 | 0.0180 (6) | 0.0196 (6) | 0.0193 (6) | 0.0012 (4) | 0.0024 (4) | −0.0013 (5) |
C11 | 0.0161 (5) | 0.0207 (6) | 0.0271 (6) | −0.0016 (4) | 0.0045 (5) | −0.0013 (5) |
C12 | 0.0198 (6) | 0.0235 (6) | 0.0212 (6) | −0.0003 (5) | 0.0008 (5) | −0.0029 (5) |
C13 | 0.0208 (6) | 0.0210 (6) | 0.0191 (6) | 0.0016 (5) | 0.0050 (5) | 0.0004 (5) |
N1—O1 | 1.19 (3) | C2—H2 | 0.9500 |
N1—O2 | 1.213 (16) | C3—C4 | 1.380 (2) |
N1—C4 | 1.518 (16) | C3—H3 | 0.9500 |
N1'—O2' | 1.236 (15) | C4—C5 | 1.379 (2) |
N1'—O1' | 1.27 (2) | C5—C6 | 1.383 (2) |
N1'—C4 | 1.460 (17) | C5—H5 | 0.9500 |
O3—C7 | 1.2205 (15) | C6—H6 | 0.9500 |
N2—C7 | 1.3532 (15) | C8—C9 | 1.4617 (16) |
N2—N3 | 1.3826 (13) | C8—H8 | 0.9500 |
N2—H2N | 0.8800 | C9—C10 | 1.3929 (16) |
N3—C8 | 1.2788 (15) | C9—C13 | 1.3964 (16) |
N4—C10 | 1.3397 (16) | C10—H10 | 0.9500 |
N4—C11 | 1.3411 (16) | C11—C12 | 1.3886 (17) |
C1—C6 | 1.3919 (18) | C11—H11 | 0.9500 |
C1—C2 | 1.3920 (18) | C12—C13 | 1.3806 (17) |
C1—C7 | 1.5061 (16) | C12—H12 | 0.9500 |
C2—C3 | 1.3865 (18) | C13—H13 | 0.9500 |
O1—N1—O2 | 124 (2) | C4—C5—H5 | 120.8 |
O1—N1—C4 | 125 (2) | C6—C5—H5 | 120.8 |
O2—N1—C4 | 111.0 (8) | C5—C6—C1 | 120.48 (13) |
O2'—N1'—O1' | 125 (2) | C5—C6—H6 | 119.8 |
O2'—N1'—C4 | 124.5 (9) | C1—C6—H6 | 119.8 |
O1'—N1'—C4 | 111 (2) | O3—C7—N2 | 124.48 (11) |
C7—N2—N3 | 119.29 (9) | O3—C7—C1 | 120.77 (11) |
C7—N2—H2N | 120.4 | N2—C7—C1 | 114.75 (10) |
N3—N2—H2N | 120.4 | N3—C8—C9 | 121.82 (10) |
C8—N3—N2 | 113.72 (9) | N3—C8—H8 | 119.1 |
C10—N4—C11 | 117.17 (10) | C9—C8—H8 | 119.1 |
C6—C1—C2 | 119.84 (12) | C10—C9—C13 | 117.86 (11) |
C6—C1—C7 | 116.99 (11) | C10—C9—C8 | 117.52 (10) |
C2—C1—C7 | 123.10 (11) | C13—C9—C8 | 124.57 (11) |
C3—C2—C1 | 120.18 (13) | N4—C10—C9 | 123.95 (11) |
C3—C2—H2 | 119.9 | N4—C10—H10 | 118.0 |
C1—C2—H2 | 119.9 | C9—C10—H10 | 118.0 |
C4—C3—C2 | 118.43 (14) | N4—C11—C12 | 123.02 (11) |
C4—C3—H3 | 120.8 | N4—C11—H11 | 118.5 |
C2—C3—H3 | 120.8 | C12—C11—H11 | 118.5 |
C5—C4—C3 | 122.72 (12) | C13—C12—C11 | 119.31 (11) |
C5—C4—N1' | 110.9 (4) | C13—C12—H12 | 120.3 |
C3—C4—N1' | 126.3 (4) | C11—C12—H12 | 120.3 |
C5—C4—N1 | 126.4 (4) | C12—C13—C9 | 118.67 (11) |
C3—C4—N1 | 110.8 (4) | C12—C13—H13 | 120.7 |
C4—C5—C6 | 118.33 (13) | C9—C13—H13 | 120.7 |
C7—N2—N3—C8 | −177.02 (10) | N1—C4—C5—C6 | 178.1 (7) |
C6—C1—C2—C3 | −0.52 (19) | C4—C5—C6—C1 | −1.3 (2) |
C7—C1—C2—C3 | −177.23 (11) | C2—C1—C6—C5 | 1.50 (19) |
C1—C2—C3—C4 | −0.57 (19) | C7—C1—C6—C5 | 178.40 (11) |
C2—C3—C4—C5 | 0.7 (2) | N3—N2—C7—O3 | −5.01 (17) |
C2—C3—C4—N1' | 177.6 (8) | N3—N2—C7—C1 | 174.08 (9) |
C2—C3—C4—N1 | −177.4 (6) | C6—C1—C7—O3 | −23.95 (17) |
O2'—N1'—C4—C5 | 2.3 (16) | C2—C1—C7—O3 | 152.85 (12) |
O1'—N1'—C4—C5 | −180 (2) | C6—C1—C7—N2 | 156.92 (11) |
O2'—N1'—C4—C3 | −174.9 (10) | C2—C1—C7—N2 | −26.28 (17) |
O1'—N1'—C4—C3 | 3 (3) | N2—N3—C8—C9 | 176.74 (10) |
O2'—N1'—C4—N1 | 168 (6) | N3—C8—C9—C10 | −179.54 (11) |
O1'—N1'—C4—N1 | −14 (4) | N3—C8—C9—C13 | −2.28 (18) |
O1—N1—C4—C5 | 174 (3) | C11—N4—C10—C9 | −0.60 (17) |
O2—N1—C4—C5 | −4.7 (15) | C13—C9—C10—N4 | 1.38 (18) |
O1—N1—C4—C3 | −8 (3) | C8—C9—C10—N4 | 178.82 (10) |
O2—N1—C4—C3 | 173.3 (9) | C10—N4—C11—C12 | −0.44 (17) |
O1—N1—C4—N1' | 158 (7) | N4—C11—C12—C13 | 0.65 (18) |
O2—N1—C4—N1' | −21 (4) | C11—C12—C13—C9 | 0.17 (18) |
C3—C4—C5—C6 | 0.2 (2) | C10—C9—C13—C12 | −1.11 (17) |
N1'—C4—C5—C6 | −177.1 (7) | C8—C9—C13—C12 | −178.35 (11) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···N4i | 0.88 | 2.09 | 2.9108 (14) | 154 |
C3—H3···O1 | 0.95 | 2.37 | 2.72 (4) | 101 |
C5—H5···O2′ | 0.95 | 2.30 | 2.666 (8) | 102 |
C8—H8···O3ii | 0.95 | 2.50 | 3.1423 (14) | 125 |
C11—H11···O2iii | 0.95 | 2.49 | 3.364 (8) | 152 |
C11—H11···O2′iii | 0.95 | 2.52 | 3.371 (8) | 150 |
C13—H13···O3iv | 0.95 | 2.57 | 3.1279 (14) | 118 |
Symmetry codes: (i) −x+1, y−1/2, −z+1/2; (ii) x, −y+3/2, z−1/2; (iii) x+1, y+1, z; (iv) −x+1, y+1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C13H10N4O3 |
Mr | 270.25 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 123 |
a, b, c (Å) | 14.6158 (3), 8.1969 (2), 10.3645 (2) |
β (°) | 100.609 (1) |
V (Å3) | 1220.49 (5) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 0.91 |
Crystal size (mm) | 0.20 × 0.16 × 0.05 |
Data collection | |
Diffractometer | Bruker APEXII diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.839, 0.956 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10114, 2192, 2098 |
Rint | 0.016 |
(sin θ/λ)max (Å−1) | 0.601 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.094, 1.06 |
No. of reflections | 2192 |
No. of parameters | 190 |
No. of restraints | 66 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.26, −0.26 |
Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SAINT and XPREP (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···N4i | 0.88 | 2.09 | 2.9108 (14) | 154.2 |
C3—H3···O1 | 0.95 | 2.37 | 2.72 (4) | 101.4 |
C5—H5···O2' | 0.95 | 2.30 | 2.666 (8) | 101.9 |
C8—H8···O3ii | 0.95 | 2.50 | 3.1423 (14) | 124.8 |
C11—H11···O2iii | 0.95 | 2.49 | 3.364 (8) | 152.4 |
C11—H11···O2'iii | 0.95 | 2.52 | 3.371 (8) | 149.7 |
C13—H13···O3iv | 0.95 | 2.57 | 3.1279 (14) | 118.1 |
Symmetry codes: (i) −x+1, y−1/2, −z+1/2; (ii) x, −y+3/2, z−1/2; (iii) x+1, y+1, z; (iv) −x+1, y+1/2, −z+3/2. |
Acknowledgements
HLS is grateful to the Institute of Chemistry, University of the Punjab for financial support.
References
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Schiff bases are well known for their anti-bacterial, anti-oxidant, and anti-tumor activities (Zia-ur-Rehman et al., 2009). These are also considered as popular ligands in coordination chemistry due to their ease of synthesis and their ability to be readily modified both electronically and sterically (Chakraborty & Patel, 1996). We have synthesized a novel Schiff base, by the condensation of pyridine-3-carbaldehyde with p-nitrobenzohydrazide, and determined its crystal structure which is presented in this paper.
The structure of the title compound is presented in Fig. 1. The bond distances and angles agree with the cortresponding bond distances and angles reported in closely related compounds (Raj et al., 2008; Fun et al., 2008; Wang et al., 2008; Qiu et al., 2009). The methylidenehydrazide fragment C7/C8/N2/N3/O3 in the title compound is essentially planar with maximum deviation being 0.0228 (7) Å for both C7 and N2 atoms. The mean-planes of the benzene ring (C1–C6) and pyridine ring (C9–C13/N4) make dihedral angles of 25.44 (6) and 5.47 (7)°, respectively, with the mean-plane of the methylidene hydrazide fragment. The structure is stabilized by extensive hydrogen bonding; details have been provided in Table 1.