organic compounds
2-{2-[(E)-(2-Benzoylhydrazin-1-ylidene)methyl]phenoxy}acetic acid
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, bDepartment of Pharmaceutical Chemistry, College of Pharmacy, Salman Bin Abdulaziz University, PO Box 173, Alkharj 11942, Saudi Arabia, and cDepartment of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
*Correspondence e-mail: hkfun@usm.my
In the title compound, C16H14N2O4, the dihedral angle between the aromatic rings is 12.45 (6)°. The central C(=O)—N—N=C bridge is roughly planar (r.m.s. deviation = 0.0346 Å) and makes dihedral angles of 13.01 (7) and 0.56 (7)° with the attached phenyl and benzene rings, respectively. The acetic acid unit (r.m.s. deviation = 0.0066 Å) is twisted from its attached benzene ring [dihedral angle = 19.48 (6)°]. In the crystal, molecules are linked by O—H⋯(O,N), N—H⋯O and C—H⋯O hydrogen bonds into sheets lying parallel to the bc plane. A weak aromatic π–π stacking interaction is also observed [centroid–centroid distance = 3.7330 (7) Å].
Related literature
For background to the biological activity of ). For a related structure, see: Rassem et al. (2012). For further synthetic details, see: Desai et al. (2000). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).
see: Abdel-Aziz & Mekawey (2009Experimental
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/S1600536812028735/hb6868sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812028735/hb6868Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536812028735/hb6868Isup3.cml
The title compound was prepared by heating 2-(2-formylphenoxy)acetic acid with benzohydrazide in absolute ethanol for 4 h (Desai et al., 2000). Colourless blocks were obtained by slow evaporation from EtOH/DMF.
The atoms H1O3 and H1N1 were located in a difference fourier map. Atom H1O3 was then fixed at its found location [O3—H1O3 = 0.8843 Å] and refined using a riding model with Uiso(H) = 1.2Ueq(O), whereas the atom H1N1 was refined freely [N1—H1N1 = 0.924 (17) Å]. The remaining H atoms were positioned geometrically [C—H = 0.93 and 0.97 Å] and refined with Uiso(H) = 1.2Ueq(C).
In continuation to our interest in the chemistry and biological activities of
(Abdel-Aziz et al., 2009), we now report herein the of the title compound.The ═O1)—N1—N2═C8 bridge is nearly planar [r.m.s. deviation = 0.0346 Å], extended in a zigzag conformation and makes dihedral angles of 13.01 (7) and 0.56 (7)° with the C1–C6 and C9–C14 benzene rings, respectively. The acetic acid unit [C15/C16/O3/O4; r.m.s. deviation = 0.0066 Å] is twisted from its attached C9–C14 benzene ring with dihedral angle of 19.48 (6)°. Bond lengths and angles are comparable to those in a related structure (Rassem et al., 2012).
of the title compound is shown in Fig. 1. The C1–C6 and C9–C14 benzene rings are slightly twisted from each other as indicated by the dihedral angle of 12.45 (6)°. The central C7(In the crystal (Fig. 2), molecules are linked by O3—H1O3···O1, O3—H1O3···N2, N1—H1N1···O4, C5—H5A···O4, C11—H11A···O1 and C15—H15A···O1 hydrogen bonds (Table 1) into two-dimensional networks parallel to bc plane. π-π interaction is also observed with Cg1···Cg2 distance of 3.7330 (7) Å [symmentry operator = 1 - x,-y,-z], where Cg1 and Cg2 are the centroids of C1–C6 and C9–C14 rings, respectively.
For background to the biological activity of
see: Abdel-Aziz et al. (2009). For a related structure, see: Rassem et al. (2012). For further synthetic details, see: Desai et al. (2000). For the stability of the temperature controller used in 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 molecular structure of the title compound with 50% probability displacement ellipsoids. | |
Fig. 2. The crystal packing of the title compound. The dashed lines represent the hydrogen bonds. For clarity sake, hydrogen atoms not involved in hydrogen bonding have been omitted. |
C16H14N2O4 | F(000) = 624 |
Mr = 298.29 | Dx = 1.396 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 5671 reflections |
a = 12.2173 (7) Å | θ = 2.8–30.1° |
b = 7.8523 (5) Å | µ = 0.10 mm−1 |
c = 15.6025 (9) Å | T = 100 K |
β = 108.577 (1)° | Block, colourless |
V = 1418.82 (15) Å3 | 0.32 × 0.21 × 0.14 mm |
Z = 4 |
Bruker APEX DUO CCD diffractometer | 4122 independent reflections |
Radiation source: fine-focus sealed tube | 3463 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
φ and ω scans | θmax = 30.1°, θmin = 2.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −17→16 |
Tmin = 0.969, Tmax = 0.986 | k = −11→10 |
14301 measured reflections | l = −22→22 |
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)] = 0.040 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.124 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0673P)2 + 0.394P] where P = (Fo2 + 2Fc2)/3 |
4122 reflections | (Δ/σ)max < 0.001 |
203 parameters | Δρmax = 0.42 e Å−3 |
0 restraints | Δρmin = −0.25 e Å−3 |
C16H14N2O4 | V = 1418.82 (15) Å3 |
Mr = 298.29 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 12.2173 (7) Å | µ = 0.10 mm−1 |
b = 7.8523 (5) Å | T = 100 K |
c = 15.6025 (9) Å | 0.32 × 0.21 × 0.14 mm |
β = 108.577 (1)° |
Bruker APEX DUO CCD diffractometer | 4122 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3463 reflections with I > 2σ(I) |
Tmin = 0.969, Tmax = 0.986 | Rint = 0.024 |
14301 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | 0 restraints |
wR(F2) = 0.124 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | Δρmax = 0.42 e Å−3 |
4122 reflections | Δρmin = −0.25 e Å−3 |
203 parameters |
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K. |
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 | 0.70132 (7) | 0.06520 (12) | 0.21655 (5) | 0.0260 (2) | |
O2 | 0.35596 (7) | 0.38508 (10) | −0.16701 (5) | 0.01834 (17) | |
O3 | 0.48909 (8) | 0.40025 (12) | −0.26386 (6) | 0.0273 (2) | |
H1O3 | 0.5341 | 0.4088 | −0.2982 | 0.033* | |
O4 | 0.35806 (9) | 0.53387 (12) | −0.37939 (6) | 0.0305 (2) | |
N1 | 0.64695 (7) | 0.09189 (11) | 0.06501 (6) | 0.01427 (18) | |
N2 | 0.55352 (7) | 0.18816 (11) | 0.06821 (6) | 0.01471 (18) | |
C1 | 0.88465 (10) | −0.14596 (14) | 0.22331 (7) | 0.0202 (2) | |
H1A | 0.8587 | −0.1404 | 0.2732 | 0.024* | |
C2 | 0.98417 (10) | −0.23668 (15) | 0.22871 (9) | 0.0262 (2) | |
H2A | 1.0239 | −0.2935 | 0.2818 | 0.031* | |
C3 | 1.02450 (10) | −0.24288 (17) | 0.15531 (10) | 0.0304 (3) | |
H3A | 1.0920 | −0.3018 | 0.1594 | 0.036* | |
C4 | 0.96375 (11) | −0.16065 (17) | 0.07552 (10) | 0.0299 (3) | |
H4A | 0.9907 | −0.1654 | 0.0261 | 0.036* | |
C5 | 0.86271 (10) | −0.07092 (15) | 0.06869 (8) | 0.0221 (2) | |
H5A | 0.8220 | −0.0170 | 0.0149 | 0.027* | |
C6 | 0.82339 (9) | −0.06286 (13) | 0.14308 (7) | 0.0162 (2) | |
C7 | 0.71940 (9) | 0.03547 (13) | 0.14467 (7) | 0.01526 (19) | |
C8 | 0.49302 (8) | 0.25514 (13) | −0.00687 (6) | 0.01392 (19) | |
H8A | 0.5128 | 0.2371 | −0.0590 | 0.017* | |
C9 | 0.39275 (8) | 0.36004 (13) | −0.01025 (6) | 0.01350 (19) | |
C10 | 0.36525 (9) | 0.40247 (14) | 0.06745 (7) | 0.0177 (2) | |
H10A | 0.4114 | 0.3619 | 0.1233 | 0.021* | |
C11 | 0.27065 (10) | 0.50378 (15) | 0.06311 (7) | 0.0220 (2) | |
H11A | 0.2542 | 0.5322 | 0.1156 | 0.026* | |
C12 | 0.20069 (10) | 0.56235 (15) | −0.02047 (7) | 0.0206 (2) | |
H12A | 0.1360 | 0.6278 | −0.0239 | 0.025* | |
C13 | 0.22630 (9) | 0.52432 (14) | −0.09895 (7) | 0.0169 (2) | |
H13A | 0.1793 | 0.5643 | −0.1546 | 0.020* | |
C14 | 0.32297 (8) | 0.42582 (13) | −0.09354 (6) | 0.01383 (19) | |
C15 | 0.31286 (9) | 0.48856 (14) | −0.24511 (7) | 0.0180 (2) | |
H15A | 0.3096 | 0.6062 | −0.2272 | 0.022* | |
H15B | 0.2352 | 0.4528 | −0.2792 | 0.022* | |
C16 | 0.38970 (10) | 0.47431 (14) | −0.30367 (7) | 0.0196 (2) | |
H1N1 | 0.6582 (14) | 0.066 (2) | 0.0106 (11) | 0.030 (4)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0283 (4) | 0.0379 (5) | 0.0125 (3) | 0.0126 (4) | 0.0072 (3) | 0.0028 (3) |
O2 | 0.0218 (4) | 0.0241 (4) | 0.0112 (3) | 0.0062 (3) | 0.0082 (3) | 0.0036 (3) |
O3 | 0.0275 (4) | 0.0309 (5) | 0.0311 (4) | 0.0042 (4) | 0.0200 (4) | 0.0053 (4) |
O4 | 0.0533 (6) | 0.0261 (4) | 0.0172 (4) | 0.0037 (4) | 0.0184 (4) | 0.0046 (3) |
N1 | 0.0150 (4) | 0.0165 (4) | 0.0117 (4) | 0.0012 (3) | 0.0048 (3) | −0.0007 (3) |
N2 | 0.0143 (4) | 0.0158 (4) | 0.0141 (4) | 0.0005 (3) | 0.0046 (3) | −0.0013 (3) |
C1 | 0.0198 (5) | 0.0167 (5) | 0.0203 (5) | 0.0007 (4) | 0.0010 (4) | −0.0014 (4) |
C2 | 0.0198 (5) | 0.0185 (5) | 0.0328 (6) | 0.0023 (4) | −0.0023 (4) | −0.0009 (4) |
C3 | 0.0182 (5) | 0.0232 (6) | 0.0491 (8) | 0.0042 (4) | 0.0097 (5) | −0.0008 (5) |
C4 | 0.0269 (6) | 0.0282 (6) | 0.0414 (7) | 0.0040 (5) | 0.0202 (5) | −0.0003 (5) |
C5 | 0.0216 (5) | 0.0227 (5) | 0.0247 (5) | 0.0018 (4) | 0.0111 (4) | 0.0008 (4) |
C6 | 0.0143 (4) | 0.0145 (4) | 0.0187 (5) | −0.0008 (4) | 0.0037 (4) | −0.0016 (4) |
C7 | 0.0160 (4) | 0.0160 (4) | 0.0138 (4) | −0.0006 (4) | 0.0047 (3) | −0.0003 (3) |
C8 | 0.0153 (4) | 0.0142 (4) | 0.0128 (4) | −0.0021 (3) | 0.0051 (3) | −0.0007 (3) |
C9 | 0.0147 (4) | 0.0133 (4) | 0.0127 (4) | −0.0022 (3) | 0.0047 (3) | −0.0007 (3) |
C10 | 0.0218 (5) | 0.0194 (5) | 0.0122 (4) | 0.0003 (4) | 0.0055 (4) | 0.0000 (4) |
C11 | 0.0273 (5) | 0.0247 (5) | 0.0170 (5) | 0.0037 (4) | 0.0114 (4) | −0.0021 (4) |
C12 | 0.0206 (5) | 0.0225 (5) | 0.0214 (5) | 0.0044 (4) | 0.0103 (4) | −0.0003 (4) |
C13 | 0.0164 (4) | 0.0188 (5) | 0.0157 (4) | 0.0015 (4) | 0.0051 (4) | 0.0018 (4) |
C14 | 0.0159 (4) | 0.0152 (4) | 0.0115 (4) | −0.0017 (3) | 0.0059 (3) | −0.0007 (3) |
C15 | 0.0187 (5) | 0.0234 (5) | 0.0120 (4) | 0.0017 (4) | 0.0050 (4) | 0.0040 (4) |
C16 | 0.0289 (6) | 0.0170 (5) | 0.0160 (4) | −0.0020 (4) | 0.0117 (4) | −0.0007 (4) |
O1—C7 | 1.2325 (12) | C5—C6 | 1.3918 (15) |
O2—C14 | 1.3686 (11) | C5—H5A | 0.9300 |
O2—C15 | 1.4191 (12) | C6—C7 | 1.4936 (14) |
O3—C16 | 1.3107 (15) | C8—C9 | 1.4631 (14) |
O3—H1O3 | 0.8843 | C8—H8A | 0.9300 |
O4—C16 | 1.2136 (13) | C9—C10 | 1.3975 (13) |
N1—C7 | 1.3504 (13) | C9—C14 | 1.4059 (13) |
N1—N2 | 1.3831 (11) | C10—C11 | 1.3869 (15) |
N1—H1N1 | 0.924 (17) | C10—H10A | 0.9300 |
N2—C8 | 1.2821 (13) | C11—C12 | 1.3901 (16) |
C1—C2 | 1.3884 (16) | C11—H11A | 0.9300 |
C1—C6 | 1.3985 (15) | C12—C13 | 1.3895 (14) |
C1—H1A | 0.9300 | C12—H12A | 0.9300 |
C2—C3 | 1.3843 (19) | C13—C14 | 1.3916 (14) |
C2—H2A | 0.9300 | C13—H13A | 0.9300 |
C3—C4 | 1.389 (2) | C15—C16 | 1.5084 (14) |
C3—H3A | 0.9300 | C15—H15A | 0.9700 |
C4—C5 | 1.3956 (16) | C15—H15B | 0.9700 |
C4—H4A | 0.9300 | ||
C14—O2—C15 | 117.23 (8) | C9—C8—H8A | 120.1 |
C16—O3—H1O3 | 109.9 | C10—C9—C14 | 118.14 (9) |
C7—N1—N2 | 116.90 (8) | C10—C9—C8 | 122.20 (9) |
C7—N1—H1N1 | 121.8 (10) | C14—C9—C8 | 119.62 (8) |
N2—N1—H1N1 | 121.3 (10) | C11—C10—C9 | 121.42 (9) |
C8—N2—N1 | 115.68 (8) | C11—C10—H10A | 119.3 |
C2—C1—C6 | 120.16 (11) | C9—C10—H10A | 119.3 |
C2—C1—H1A | 119.9 | C10—C11—C12 | 119.29 (9) |
C6—C1—H1A | 119.9 | C10—C11—H11A | 120.4 |
C3—C2—C1 | 120.23 (11) | C12—C11—H11A | 120.4 |
C3—C2—H2A | 119.9 | C13—C12—C11 | 120.79 (10) |
C1—C2—H2A | 119.9 | C13—C12—H12A | 119.6 |
C2—C3—C4 | 119.72 (11) | C11—C12—H12A | 119.6 |
C2—C3—H3A | 120.1 | C12—C13—C14 | 119.41 (9) |
C4—C3—H3A | 120.1 | C12—C13—H13A | 120.3 |
C3—C4—C5 | 120.67 (12) | C14—C13—H13A | 120.3 |
C3—C4—H4A | 119.7 | O2—C14—C13 | 123.35 (9) |
C5—C4—H4A | 119.7 | O2—C14—C9 | 115.76 (9) |
C6—C5—C4 | 119.43 (11) | C13—C14—C9 | 120.88 (9) |
C6—C5—H5A | 120.3 | O2—C15—C16 | 110.21 (9) |
C4—C5—H5A | 120.3 | O2—C15—H15A | 109.6 |
C5—C6—C1 | 119.78 (10) | C16—C15—H15A | 109.6 |
C5—C6—C7 | 123.97 (9) | O2—C15—H15B | 109.6 |
C1—C6—C7 | 116.22 (9) | C16—C15—H15B | 109.6 |
O1—C7—N1 | 121.36 (9) | H15A—C15—H15B | 108.1 |
O1—C7—C6 | 120.86 (9) | O4—C16—O3 | 126.30 (10) |
N1—C7—C6 | 117.77 (9) | O4—C16—C15 | 119.63 (11) |
N2—C8—C9 | 119.75 (8) | O3—C16—C15 | 114.03 (9) |
N2—C8—H8A | 120.1 | ||
C7—N1—N2—C8 | 172.93 (9) | N2—C8—C9—C14 | −176.62 (9) |
C6—C1—C2—C3 | 1.17 (17) | C14—C9—C10—C11 | 1.25 (16) |
C1—C2—C3—C4 | −1.25 (19) | C8—C9—C10—C11 | 179.21 (10) |
C2—C3—C4—C5 | 0.4 (2) | C9—C10—C11—C12 | 0.95 (17) |
C3—C4—C5—C6 | 0.59 (19) | C10—C11—C12—C13 | −1.72 (18) |
C4—C5—C6—C1 | −0.67 (17) | C11—C12—C13—C14 | 0.25 (17) |
C4—C5—C6—C7 | 177.28 (11) | C15—O2—C14—C13 | 20.08 (14) |
C2—C1—C6—C5 | −0.20 (16) | C15—O2—C14—C9 | −160.56 (9) |
C2—C1—C6—C7 | −178.31 (10) | C12—C13—C14—O2 | −178.65 (10) |
N2—N1—C7—O1 | 1.68 (15) | C12—C13—C14—C9 | 2.02 (16) |
N2—N1—C7—C6 | −177.63 (8) | C10—C9—C14—O2 | 177.88 (9) |
C5—C6—C7—O1 | −165.87 (11) | C8—C9—C14—O2 | −0.13 (14) |
C1—C6—C7—O1 | 12.14 (15) | C10—C9—C14—C13 | −2.74 (15) |
C5—C6—C7—N1 | 13.44 (16) | C8—C9—C14—C13 | 179.25 (9) |
C1—C6—C7—N1 | −168.54 (9) | C14—O2—C15—C16 | 157.84 (9) |
N1—N2—C8—C9 | −179.66 (8) | O2—C15—C16—O4 | 169.40 (10) |
N2—C8—C9—C10 | 5.46 (15) | O2—C15—C16—O3 | −12.74 (13) |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H1O3···O1i | 0.88 | 1.99 | 2.7194 (14) | 139 |
O3—H1O3···N2i | 0.88 | 2.30 | 3.0464 (12) | 142 |
N1—H1N1···O4ii | 0.925 (17) | 2.009 (16) | 2.9131 (13) | 165.4 (16) |
C5—H5A···O4ii | 0.93 | 2.55 | 3.4058 (16) | 153 |
C11—H11A···O1iii | 0.93 | 2.51 | 3.3791 (13) | 155 |
C15—H15A···O1iv | 0.97 | 2.59 | 3.5434 (15) | 167 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x+1, y−1/2, −z−1/2; (iii) −x+1, y+1/2, −z+1/2; (iv) −x+1, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C16H14N2O4 |
Mr | 298.29 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 12.2173 (7), 7.8523 (5), 15.6025 (9) |
β (°) | 108.577 (1) |
V (Å3) | 1418.82 (15) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.32 × 0.21 × 0.14 |
Data collection | |
Diffractometer | Bruker APEX DUO CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.969, 0.986 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14301, 4122, 3463 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.706 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.040, 0.124, 1.07 |
No. of reflections | 4122 |
No. of parameters | 203 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.42, −0.25 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008), SHELXTL (Sheldrick, 2008 and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H1O3···O1i | 0.88 | 1.99 | 2.7194 (14) | 139 |
O3—H1O3···N2i | 0.88 | 2.30 | 3.0464 (12) | 142 |
N1—H1N1···O4ii | 0.925 (17) | 2.009 (16) | 2.9131 (13) | 165.4 (16) |
C5—H5A···O4ii | 0.93 | 2.55 | 3.4058 (16) | 153 |
C11—H11A···O1iii | 0.93 | 2.51 | 3.3791 (13) | 155 |
C15—H15A···O1iv | 0.97 | 2.59 | 3.5434 (15) | 167 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x+1, y−1/2, −z−1/2; (iii) −x+1, y+1/2, −z+1/2; (iv) −x+1, −y+1, −z. |
Footnotes
‡Thomson Reuters ResearcherID: A-3561-2009.
Acknowledgements
HKF and TSC thank Universiti Sains Malaysia (USM) for the Research University Grant (1001/PFIZIK/811160). TSC also thanks the Malaysian Government and USM for the award of a research fellowship. The authors thank the Deanship of Scientific Research and the Research Center, College of Pharmacy, King Saud University.
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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.
In continuation to our interest in the chemistry and biological activities of hydrazones (Abdel-Aziz et al., 2009), we now report herein the crystal structure of the title compound.
The asymmetric unit of the title compound is shown in Fig. 1. The C1–C6 and C9–C14 benzene rings are slightly twisted from each other as indicated by the dihedral angle of 12.45 (6)°. The central C7(═O1)—N1—N2═C8 bridge is nearly planar [r.m.s. deviation = 0.0346 Å], extended in a zigzag conformation and makes dihedral angles of 13.01 (7) and 0.56 (7)° with the C1–C6 and C9–C14 benzene rings, respectively. The acetic acid unit [C15/C16/O3/O4; r.m.s. deviation = 0.0066 Å] is twisted from its attached C9–C14 benzene ring with dihedral angle of 19.48 (6)°. Bond lengths and angles are comparable to those in a related structure (Rassem et al., 2012).
In the crystal (Fig. 2), molecules are linked by O3—H1O3···O1, O3—H1O3···N2, N1—H1N1···O4, C5—H5A···O4, C11—H11A···O1 and C15—H15A···O1 hydrogen bonds (Table 1) into two-dimensional networks parallel to bc plane. π-π interaction is also observed with Cg1···Cg2 distance of 3.7330 (7) Å [symmentry operator = 1 - x,-y,-z], where Cg1 and Cg2 are the centroids of C1–C6 and C9–C14 rings, respectively.