organic compounds
(E)-N′-[(E)-3-(4-Hydroxy-3-methoxyphenyl)allylidene]isonicotinohydrazide
aSchool of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: hkfun@usm.my
In the title compound, C16H15N3O3, the dihedral angle between the pyridine and benzene rings is 7.66 (5)°. The crystal packing is consolidated by intermolecular C—H⋯O and O—H⋯N interactions, which link the molecules into zigzag chains propagating along [010]. The chains are further linked into a three-dimensional network by N—H⋯O, C—H⋯N, C—H⋯O and C—H⋯π interactions.
Related literature
For the synthesis, see: Lourenco et al. (2008). For the tuberculostatic activities of isoniazid derivatives, see: Janin (2007). For related structures, see: Naveenkumar et al. (2009a,b,c); Shi (2005). For the stability of the temperature controller used for the data collection, see: Cosier & Glazer (1986).
Experimental
Crystal data
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Refinement
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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/S1600536810000371/hb5304sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810000371/hb5304Isup2.hkl
The isoniazid derivative was prepared following the procedure by Lourenco et al. (2008). (E)-N'-[(E)-3-(4-hydroxy-3-methoxyphenyl) allylidene]isonicotinohydrazide was prepared by reaction between the 4-hydroxy-3-methoxy cinnamaldehyde (1.0 eq) with isoniazid (1.0 eq) in ethanol/water. After stirring for 1-3 h at room temperature, the resulting mixture was concentrated under reduced pressure. The residue, purified by washing with cold ethanol and ethyl ether, afforded the pure derivative. Yellow needles of (I) were obtained by recrystallization from methanol.
Atoms H1N2 and H1O2 were located in a difference Fourier map and refined freely. The remaining H atoms were positioned geometrically and refined using a riding model, with C-H = 0.93–0.96 Å and Uiso(H) = 1.2 or 1.5 Ueq(C). A rotating-group model was applied for the methyl groups.
In the search of new compounds, isoniazid derivatives have been found to possess potential tuberculostatic activities (e.g. Janin, 2007). As a part of a current work of synthesis of (E)-N'-substituted isonicotinohydrazide derivatives, we present the
of the title compound, (I), (Fig. 1).The pyridine ring (N1/C1–C5) in (I) forms dihedral angle of 7.66 (5)° with the benzene ring (C10–C15), indicating that they are almost co-planar to each other. Bond lengths and angles are within normal ranges, and comparable to closely related structures (Naveenkumar et al., 2009a,b,c; Shi, 2005).
The crystal packing is consolidated by intermolecular C2—H2A···O3 and O2—H1O2···N1 interactions (Fig. 2) which link the independent molecules into zig-zag chains along the [0 1 0] direction. The π interactions (Table 1).
is further linked via N2—H1N2···O1, C4—H4A···N3 and C7—H7A···O1 interactions, into three-dimensional network. The structure is also stabilized by C—H···For the synthesis, see: Lourenco et al. (2008). For the tuberculostatic activities of isoniazid derivatives, see: Janin (2007). For related structures, see: Naveenkumar et al. (2009a,b,c); Shi (2005). For the stability of the temperature controller used for the data collection, see: Cosier & Glazer (1986).
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).Fig. 1. The asymmetric unit of (I) showing 50% displacement ellipsoids. | |
Fig. 2. The crystal packing of (I), viewed down the a axis. H atoms not involving in hydrogen bonds (dashed lines) have been omitted for clarity. |
C16H15N3O3 | F(000) = 624 |
Mr = 297.31 | Dx = 1.402 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 9970 reflections |
a = 5.0470 (1) Å | θ = 2.2–30.1° |
b = 28.9314 (6) Å | µ = 0.10 mm−1 |
c = 9.6446 (2) Å | T = 100 K |
β = 90.010 (1)° | Needle, yellow |
V = 1408.27 (5) Å3 | 0.53 × 0.20 × 0.08 mm |
Z = 4 |
Bruker SMART APEXII CCD diffractometer | 4144 independent reflections |
Radiation source: fine-focus sealed tube | 3534 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
φ and ω scans | θmax = 30.2°, θmin = 1.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −7→7 |
Tmin = 0.950, Tmax = 0.992 | k = −40→40 |
33857 measured reflections | l = −13→13 |
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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.110 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0505P)2 + 0.5887P] where P = (Fo2 + 2Fc2)/3 |
4144 reflections | (Δ/σ)max = 0.001 |
208 parameters | Δρmax = 0.43 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C16H15N3O3 | V = 1408.27 (5) Å3 |
Mr = 297.31 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 5.0470 (1) Å | µ = 0.10 mm−1 |
b = 28.9314 (6) Å | T = 100 K |
c = 9.6446 (2) Å | 0.53 × 0.20 × 0.08 mm |
β = 90.010 (1)° |
Bruker SMART APEXII CCD diffractometer | 4144 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3534 reflections with I > 2σ(I) |
Tmin = 0.950, Tmax = 0.992 | Rint = 0.030 |
33857 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.110 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.43 e Å−3 |
4144 reflections | Δρmin = −0.22 e Å−3 |
208 parameters |
Experimental. The crystal was placed in the cold stream of an Oxford Cyrosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K. |
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 > 2sigma(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 | 1.08233 (15) | 0.46282 (3) | 0.88942 (9) | 0.01916 (18) | |
O2 | 0.21767 (17) | 0.74390 (3) | 0.22611 (9) | 0.01855 (18) | |
O3 | 0.60188 (15) | 0.73516 (3) | 0.41721 (8) | 0.01721 (17) | |
N1 | 0.7016 (2) | 0.32923 (3) | 1.14947 (11) | 0.0203 (2) | |
N2 | 0.64104 (19) | 0.47193 (3) | 0.84655 (10) | 0.01645 (19) | |
N3 | 0.68169 (19) | 0.51003 (3) | 0.76213 (10) | 0.0175 (2) | |
C1 | 0.5730 (2) | 0.38057 (4) | 0.96577 (15) | 0.0242 (3) | |
H1A | 0.4555 | 0.3873 | 0.8943 | 0.029* | |
C2 | 0.5420 (2) | 0.34088 (4) | 1.04462 (15) | 0.0260 (3) | |
H2A | 0.4020 | 0.3212 | 1.0233 | 0.031* | |
C3 | 0.8987 (3) | 0.35853 (4) | 1.17893 (13) | 0.0235 (3) | |
H3A | 1.0093 | 0.3515 | 1.2531 | 0.028* | |
C4 | 0.9479 (2) | 0.39885 (4) | 1.10550 (12) | 0.0213 (2) | |
H4A | 1.0887 | 0.4180 | 1.1294 | 0.026* | |
C5 | 0.7823 (2) | 0.41004 (4) | 0.99545 (11) | 0.0149 (2) | |
C6 | 0.8505 (2) | 0.45104 (4) | 0.90682 (11) | 0.0144 (2) | |
C7 | 0.4745 (2) | 0.52317 (4) | 0.69452 (12) | 0.0179 (2) | |
H7A | 0.3181 | 0.5063 | 0.7002 | 0.021* | |
C8 | 0.4869 (2) | 0.56419 (4) | 0.61002 (12) | 0.0184 (2) | |
H8A | 0.6425 | 0.5814 | 0.6096 | 0.022* | |
C9 | 0.2819 (2) | 0.57851 (4) | 0.53159 (12) | 0.0181 (2) | |
H9A | 0.1349 | 0.5592 | 0.5273 | 0.022* | |
C10 | 0.2689 (2) | 0.62152 (4) | 0.45276 (11) | 0.0158 (2) | |
C11 | 0.4478 (2) | 0.65790 (4) | 0.47779 (11) | 0.0158 (2) | |
H11A | 0.5762 | 0.6546 | 0.5463 | 0.019* | |
C12 | 0.4357 (2) | 0.69838 (4) | 0.40220 (11) | 0.0141 (2) | |
C13 | 0.2379 (2) | 0.70419 (4) | 0.29982 (11) | 0.0144 (2) | |
C14 | 0.0603 (2) | 0.66845 (4) | 0.27564 (12) | 0.0173 (2) | |
H14A | −0.0695 | 0.6719 | 0.2080 | 0.021* | |
C15 | 0.0737 (2) | 0.62759 (4) | 0.35120 (12) | 0.0173 (2) | |
H15A | −0.0478 | 0.6041 | 0.3342 | 0.021* | |
C16 | 0.7875 (2) | 0.73391 (4) | 0.52991 (12) | 0.0176 (2) | |
H16A | 0.9059 | 0.7598 | 0.5229 | 0.026* | |
H16B | 0.8873 | 0.7057 | 0.5259 | 0.026* | |
H16C | 0.6934 | 0.7354 | 0.6163 | 0.026* | |
H1N2 | 0.476 (3) | 0.4640 (5) | 0.8667 (16) | 0.025 (4)* | |
H1O2 | 0.284 (4) | 0.7669 (7) | 0.272 (2) | 0.048 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0127 (4) | 0.0203 (4) | 0.0245 (4) | −0.0018 (3) | 0.0008 (3) | 0.0028 (3) |
O2 | 0.0221 (4) | 0.0158 (4) | 0.0178 (4) | −0.0010 (3) | −0.0061 (3) | 0.0024 (3) |
O3 | 0.0162 (4) | 0.0151 (4) | 0.0203 (4) | −0.0022 (3) | −0.0061 (3) | 0.0015 (3) |
N1 | 0.0241 (5) | 0.0162 (5) | 0.0204 (5) | −0.0010 (4) | 0.0014 (4) | 0.0014 (4) |
N2 | 0.0127 (4) | 0.0140 (4) | 0.0226 (5) | −0.0011 (3) | 0.0009 (3) | 0.0045 (4) |
N3 | 0.0172 (4) | 0.0131 (4) | 0.0221 (5) | −0.0014 (3) | 0.0008 (3) | 0.0035 (4) |
C1 | 0.0188 (5) | 0.0180 (6) | 0.0358 (7) | −0.0030 (4) | −0.0089 (5) | 0.0068 (5) |
C2 | 0.0201 (6) | 0.0178 (6) | 0.0400 (7) | −0.0052 (4) | −0.0061 (5) | 0.0068 (5) |
C3 | 0.0312 (6) | 0.0218 (6) | 0.0175 (5) | −0.0057 (5) | −0.0059 (4) | 0.0030 (5) |
C4 | 0.0249 (6) | 0.0206 (6) | 0.0183 (5) | −0.0066 (4) | −0.0042 (4) | 0.0012 (4) |
C5 | 0.0139 (5) | 0.0130 (5) | 0.0178 (5) | 0.0010 (4) | 0.0029 (4) | −0.0013 (4) |
C6 | 0.0139 (5) | 0.0128 (5) | 0.0163 (5) | −0.0004 (4) | 0.0009 (4) | −0.0009 (4) |
C7 | 0.0162 (5) | 0.0154 (5) | 0.0220 (5) | −0.0018 (4) | 0.0009 (4) | 0.0018 (4) |
C8 | 0.0169 (5) | 0.0154 (5) | 0.0228 (6) | −0.0009 (4) | 0.0011 (4) | 0.0025 (4) |
C9 | 0.0170 (5) | 0.0153 (5) | 0.0221 (6) | −0.0014 (4) | 0.0006 (4) | 0.0018 (4) |
C10 | 0.0154 (5) | 0.0155 (5) | 0.0166 (5) | 0.0012 (4) | 0.0008 (4) | 0.0006 (4) |
C11 | 0.0136 (5) | 0.0168 (5) | 0.0171 (5) | 0.0015 (4) | −0.0021 (4) | 0.0010 (4) |
C12 | 0.0124 (4) | 0.0149 (5) | 0.0149 (5) | 0.0004 (4) | 0.0003 (3) | −0.0018 (4) |
C13 | 0.0157 (5) | 0.0152 (5) | 0.0122 (5) | 0.0018 (4) | −0.0003 (3) | −0.0003 (4) |
C14 | 0.0178 (5) | 0.0186 (5) | 0.0155 (5) | −0.0005 (4) | −0.0042 (4) | −0.0015 (4) |
C15 | 0.0166 (5) | 0.0164 (5) | 0.0190 (5) | −0.0018 (4) | −0.0013 (4) | −0.0022 (4) |
C16 | 0.0154 (5) | 0.0197 (5) | 0.0178 (5) | −0.0003 (4) | −0.0045 (4) | −0.0015 (4) |
O1—C6 | 1.2301 (13) | C5—C6 | 1.5021 (15) |
O2—C13 | 1.3550 (13) | C7—C8 | 1.4410 (16) |
O2—H1O2 | 0.87 (2) | C7—H7A | 0.9300 |
O3—C12 | 1.3626 (13) | C8—C9 | 1.3470 (16) |
O3—C16 | 1.4352 (13) | C8—H8A | 0.9300 |
N1—C2 | 1.3360 (16) | C9—C10 | 1.4598 (15) |
N1—C3 | 1.3373 (16) | C9—H9A | 0.9300 |
N2—C6 | 1.3494 (14) | C10—C15 | 1.4000 (15) |
N2—N3 | 1.3856 (13) | C10—C11 | 1.4075 (15) |
N2—H1N2 | 0.884 (17) | C11—C12 | 1.3808 (15) |
N3—C7 | 1.2895 (15) | C11—H11A | 0.9300 |
C1—C2 | 1.3862 (17) | C12—C13 | 1.4142 (15) |
C1—C5 | 1.3875 (16) | C13—C14 | 1.3881 (15) |
C1—H1A | 0.9300 | C14—C15 | 1.3904 (16) |
C2—H2A | 0.9300 | C14—H14A | 0.9300 |
C3—C4 | 1.3871 (17) | C15—H15A | 0.9300 |
C3—H3A | 0.9300 | C16—H16A | 0.9600 |
C4—C5 | 1.3889 (16) | C16—H16B | 0.9600 |
C4—H4A | 0.9300 | C16—H16C | 0.9600 |
C13—O2—H1O2 | 110.8 (13) | C9—C8—H8A | 118.7 |
C12—O3—C16 | 117.55 (9) | C7—C8—H8A | 118.7 |
C2—N1—C3 | 116.70 (10) | C8—C9—C10 | 126.10 (10) |
C6—N2—N3 | 119.56 (9) | C8—C9—H9A | 117.0 |
C6—N2—H1N2 | 121.8 (10) | C10—C9—H9A | 117.0 |
N3—N2—H1N2 | 118.3 (10) | C15—C10—C11 | 118.52 (10) |
C7—N3—N2 | 114.31 (9) | C15—C10—C9 | 120.18 (10) |
C2—C1—C5 | 118.81 (11) | C11—C10—C9 | 121.29 (10) |
C2—C1—H1A | 120.6 | C12—C11—C10 | 121.02 (10) |
C5—C1—H1A | 120.6 | C12—C11—H11A | 119.5 |
N1—C2—C1 | 123.79 (11) | C10—C11—H11A | 119.5 |
N1—C2—H2A | 118.1 | O3—C12—C11 | 125.39 (10) |
C1—C2—H2A | 118.1 | O3—C12—C13 | 114.57 (9) |
N1—C3—C4 | 123.91 (11) | C11—C12—C13 | 120.04 (10) |
N1—C3—H3A | 118.0 | O2—C13—C14 | 119.67 (10) |
C4—C3—H3A | 118.0 | O2—C13—C12 | 121.34 (10) |
C3—C4—C5 | 118.58 (11) | C14—C13—C12 | 118.99 (10) |
C3—C4—H4A | 120.7 | C13—C14—C15 | 120.91 (10) |
C5—C4—H4A | 120.7 | C13—C14—H14A | 119.5 |
C1—C5—C4 | 118.19 (11) | C15—C14—H14A | 119.5 |
C1—C5—C6 | 122.84 (10) | C14—C15—C10 | 120.51 (10) |
C4—C5—C6 | 118.76 (10) | C14—C15—H15A | 119.7 |
O1—C6—N2 | 124.21 (10) | C10—C15—H15A | 119.7 |
O1—C6—C5 | 120.96 (10) | O3—C16—H16A | 109.5 |
N2—C6—C5 | 114.79 (9) | O3—C16—H16B | 109.5 |
N3—C7—C8 | 119.57 (10) | H16A—C16—H16B | 109.5 |
N3—C7—H7A | 120.2 | O3—C16—H16C | 109.5 |
C8—C7—H7A | 120.2 | H16A—C16—H16C | 109.5 |
C9—C8—C7 | 122.51 (10) | H16B—C16—H16C | 109.5 |
C6—N2—N3—C7 | 170.58 (10) | C8—C9—C10—C15 | 165.29 (12) |
C3—N1—C2—C1 | 1.0 (2) | C8—C9—C10—C11 | −15.62 (18) |
C5—C1—C2—N1 | 0.6 (2) | C15—C10—C11—C12 | −1.36 (16) |
C2—N1—C3—C4 | −1.61 (19) | C9—C10—C11—C12 | 179.53 (10) |
N1—C3—C4—C5 | 0.7 (2) | C16—O3—C12—C11 | −6.79 (15) |
C2—C1—C5—C4 | −1.55 (18) | C16—O3—C12—C13 | 172.87 (9) |
C2—C1—C5—C6 | 173.17 (11) | C10—C11—C12—O3 | −178.97 (10) |
C3—C4—C5—C1 | 0.97 (18) | C10—C11—C12—C13 | 1.38 (16) |
C3—C4—C5—C6 | −173.96 (11) | O3—C12—C13—O2 | −1.11 (15) |
N3—N2—C6—O1 | −1.93 (17) | C11—C12—C13—O2 | 178.58 (10) |
N3—N2—C6—C5 | −179.76 (9) | O3—C12—C13—C14 | 179.36 (10) |
C1—C5—C6—O1 | −144.63 (12) | C11—C12—C13—C14 | −0.95 (16) |
C4—C5—C6—O1 | 30.05 (16) | O2—C13—C14—C15 | −179.00 (10) |
C1—C5—C6—N2 | 33.28 (15) | C12—C13—C14—C15 | 0.54 (16) |
C4—C5—C6—N2 | −152.04 (11) | C13—C14—C15—C10 | −0.54 (17) |
N2—N3—C7—C8 | 176.04 (10) | C11—C10—C15—C14 | 0.93 (16) |
N3—C7—C8—C9 | 176.67 (11) | C9—C10—C15—C14 | −179.95 (10) |
C7—C8—C9—C10 | 174.30 (11) |
Cg1 is the centroid of the C10–C15 benzene ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H1N2···O1i | 0.886 (15) | 1.999 (15) | 2.8622 (12) | 164.4 (14) |
O2—H1O2···N1ii | 0.87 (2) | 1.96 (2) | 2.7750 (13) | 156.9 (19) |
C2—H2A···O3iii | 0.93 | 2.55 | 3.1651 (14) | 124 |
C4—H4A···N3iv | 0.93 | 2.60 | 3.4747 (14) | 156 |
C7—H7A···O1i | 0.93 | 2.52 | 3.2405 (14) | 135 |
C16—H16B···Cg1v | 0.96 | 2.65 | 3.4556 (12) | 142 |
Symmetry codes: (i) x−1, y, z; (ii) −x+1, y+1/2, −z+3/2; (iii) −x+1, y−1/2, −z+3/2; (iv) −x+2, −y+1, −z+2; (v) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C16H15N3O3 |
Mr | 297.31 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 5.0470 (1), 28.9314 (6), 9.6446 (2) |
β (°) | 90.010 (1) |
V (Å3) | 1408.27 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.53 × 0.20 × 0.08 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.950, 0.992 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 33857, 4144, 3534 |
Rint | 0.030 |
(sin θ/λ)max (Å−1) | 0.707 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.110, 1.05 |
No. of reflections | 4144 |
No. of parameters | 208 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.43, −0.22 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Cg1 is the centroid of the C10–C15 benzene ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H1N2···O1i | 0.886 (15) | 1.999 (15) | 2.8622 (12) | 164.4 (14) |
O2—H1O2···N1ii | 0.87 (2) | 1.96 (2) | 2.7750 (13) | 156.9 (19) |
C2—H2A···O3iii | 0.93 | 2.55 | 3.1651 (14) | 124 |
C4—H4A···N3iv | 0.93 | 2.60 | 3.4747 (14) | 156 |
C7—H7A···O1i | 0.93 | 2.52 | 3.2405 (14) | 135 |
C16—H16B···Cg1v | 0.96 | 2.65 | 3.4556 (12) | 142 |
Symmetry codes: (i) x−1, y, z; (ii) −x+1, y+1/2, −z+3/2; (iii) −x+1, y−1/2, −z+3/2; (iv) −x+2, −y+1, −z+2; (v) x+1, y, z. |
Acknowledgements
This research was supported by Universiti Sains Malaysia (USM) under the University Research Grant (No. 1001/PFARMASI/815005). HKF and CKQ thank USM for the Research University Golden Goose Grant (No. 1001/PFIZIK/811012). HSNK and CKQ are grateful financial assistance through a USM fellowship.
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In the search of new compounds, isoniazid derivatives have been found to possess potential tuberculostatic activities (e.g. Janin, 2007). As a part of a current work of synthesis of (E)-N'-substituted isonicotinohydrazide derivatives, we present the crystal structure of the title compound, (I), (Fig. 1).
The pyridine ring (N1/C1–C5) in (I) forms dihedral angle of 7.66 (5)° with the benzene ring (C10–C15), indicating that they are almost co-planar to each other. Bond lengths and angles are within normal ranges, and comparable to closely related structures (Naveenkumar et al., 2009a,b,c; Shi, 2005).
The crystal packing is consolidated by intermolecular C2—H2A···O3 and O2—H1O2···N1 interactions (Fig. 2) which link the independent molecules into zig-zag chains along the [0 1 0] direction. The crystal structure is further linked via N2—H1N2···O1, C4—H4A···N3 and C7—H7A···O1 interactions, into three-dimensional network. The structure is also stabilized by C—H···π interactions (Table 1).