organic compounds
2-(4-Methylanilino)acetohydrazide
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and bDepartment of Chemistry, National Institute of Technology–Karnataka, Surathkal, Mangalore 575 025, India
*Correspondence e-mail: hkfun@usm.my
In the title molecule, C9H13N3O, the non-hydrogen atoms of the hydrazide group are essentially planar [maximum deviation = 0.028 (1) Å for one of the N atoms]. The mean plane of this group forms a dihedral angle of 83.34 (5)° with the plane of the benzene ring. In the molecules are linked by intermolecular N—H⋯O, N—H⋯N and weak C—H⋯N hydrogen bonds into a two-dimensional network parallel to the ab plane. Additional stabilization is provided by a weak C—H⋯π interaction.
Related literature
For the biological activity of hydrazide derivatives, see: Ozdemir et al. (2009); Khattab (2005). For synthetic applications, see: Isloor et al. (2009); Holla & Udupa (1992). For a related structure, see: Zhang & Shi (2009). For the stability of the temperature controller used for the data collection, see: Cosier & Glazer (1986).
Experimental
Crystal data
|
Refinement
|
Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); 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
10.1107/S1600536809033169/lh2884sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809033169/lh2884Isup2.hkl
Ethyl [(4-methylphenyl)amino]acetate (19.3 g, 0.1 mol) and hydrazine hydrate (99%, 0.2 mol) in ethanol (200 ml) was heated on a water-bath for 6 h. Excess of ethanol was removed by distillation. On cooling, colourless block-shaped single crystals of 2-[(4-methylphenyl)amino]acetohydrazide begin to separate (Holla & Udupa, 1992). It was collected by filtration and recrystallized from ethanol. Yield: 13.2 g, 73.7%, M.p. 423–426 K.
All hydrogen atoms were located from the difference Fourier map and refined freely, with N—H = 0.876 (15)–0.912 (15) Å; C–H = 0.96 (2)–1.04 (2) Å.
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); 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 atom labels and 50% probability ellipsoids for non-H atoms. | |
Fig. 2. Part of the crystal structure of (I), viewed along the b axis, showing the two-dimensional network parallel to ab plane. Intermolecular hydrogen bonds are shown in as dashed lines. |
C9H13N3O | Z = 2 |
Mr = 179.22 | F(000) = 192 |
Triclinic, P1 | Dx = 1.278 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 5.1481 (1) Å | Cell parameters from 6230 reflections |
b = 5.9262 (2) Å | θ = 2.7–31.2° |
c = 15.4756 (4) Å | µ = 0.09 mm−1 |
α = 87.002 (2)° | T = 100 K |
β = 84.282 (2)° | Block, colourless |
γ = 82.849 (2)° | 0.52 × 0.15 × 0.07 mm |
V = 465.76 (2) Å3 |
Bruker SMART APEXII CCD area-detector diffractometer | 2703 independent reflections |
Radiation source: fine-focus sealed tube | 2301 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.026 |
ϕ and ω scans | θmax = 30.0°, θmin = 2.7° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −7→7 |
Tmin = 0.956, Tmax = 0.994 | k = −8→8 |
11697 measured reflections | l = −21→21 |
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)] = 0.039 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.110 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0559P)2 + 0.1344P] where P = (Fo2 + 2Fc2)/3 |
2703 reflections | (Δ/σ)max < 0.001 |
170 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.20 e Å−3 |
C9H13N3O | γ = 82.849 (2)° |
Mr = 179.22 | V = 465.76 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 5.1481 (1) Å | Mo Kα radiation |
b = 5.9262 (2) Å | µ = 0.09 mm−1 |
c = 15.4756 (4) Å | T = 100 K |
α = 87.002 (2)° | 0.52 × 0.15 × 0.07 mm |
β = 84.282 (2)° |
Bruker SMART APEXII CCD area-detector diffractometer | 2703 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 2301 reflections with I > 2σ(I) |
Tmin = 0.956, Tmax = 0.994 | Rint = 0.026 |
11697 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 0 restraints |
wR(F2) = 0.110 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.34 e Å−3 |
2703 reflections | Δρmin = −0.20 e Å−3 |
170 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 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 | 0.63005 (14) | 0.15409 (11) | 0.39934 (5) | 0.01915 (17) | |
N1 | 0.43188 (17) | 0.74133 (14) | 0.33320 (6) | 0.01783 (18) | |
N2 | 0.26039 (16) | 0.39523 (13) | 0.43209 (5) | 0.01650 (18) | |
N3 | 0.12716 (17) | 0.23345 (14) | 0.48445 (6) | 0.01765 (18) | |
C1 | 0.1124 (2) | 0.95874 (17) | 0.24809 (7) | 0.0231 (2) | |
C2 | −0.0573 (2) | 0.9751 (2) | 0.18340 (8) | 0.0282 (2) | |
C3 | −0.0748 (2) | 0.7920 (2) | 0.13190 (7) | 0.0280 (2) | |
C4 | 0.0857 (2) | 0.5915 (2) | 0.14806 (7) | 0.0257 (2) | |
C5 | 0.2577 (2) | 0.57064 (17) | 0.21309 (7) | 0.0208 (2) | |
C6 | 0.27314 (19) | 0.75502 (16) | 0.26432 (6) | 0.01770 (19) | |
C7 | 0.62171 (19) | 0.54434 (16) | 0.34553 (7) | 0.01795 (19) | |
C8 | 0.50373 (18) | 0.34635 (15) | 0.39460 (6) | 0.01517 (18) | |
C9 | −0.2624 (3) | 0.8132 (3) | 0.06212 (9) | 0.0405 (3) | |
H1A | 0.116 (3) | 1.091 (3) | 0.2848 (10) | 0.031 (4)* | |
H2A | −0.167 (3) | 1.117 (3) | 0.1751 (11) | 0.042 (4)* | |
H4A | 0.081 (3) | 0.457 (3) | 0.1131 (10) | 0.032 (4)* | |
H5A | 0.363 (3) | 0.424 (3) | 0.2235 (10) | 0.031 (4)* | |
H7A | 0.713 (3) | 0.484 (2) | 0.2916 (9) | 0.024 (3)* | |
H7B | 0.757 (3) | 0.592 (2) | 0.3797 (9) | 0.026 (3)* | |
H9A | −0.199 (4) | 0.895 (4) | 0.0098 (14) | 0.070 (6)* | |
H9B | −0.435 (4) | 0.878 (3) | 0.0840 (13) | 0.064 (6)* | |
H9C | −0.290 (4) | 0.655 (4) | 0.0400 (14) | 0.072 (6)* | |
H1N1 | 0.485 (3) | 0.869 (3) | 0.3461 (9) | 0.029 (4)* | |
H1N2 | 0.185 (3) | 0.538 (3) | 0.4343 (9) | 0.028 (3)* | |
H1N3 | 0.250 (3) | 0.125 (2) | 0.5030 (9) | 0.023 (3)* | |
H2N3 | 0.031 (3) | 0.167 (2) | 0.4485 (9) | 0.028 (4)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0173 (3) | 0.0139 (3) | 0.0257 (4) | 0.0010 (2) | −0.0024 (3) | −0.0012 (3) |
N1 | 0.0208 (4) | 0.0112 (3) | 0.0219 (4) | −0.0032 (3) | −0.0028 (3) | −0.0005 (3) |
N2 | 0.0155 (4) | 0.0110 (3) | 0.0223 (4) | −0.0013 (3) | 0.0001 (3) | 0.0014 (3) |
N3 | 0.0159 (4) | 0.0135 (4) | 0.0233 (4) | −0.0029 (3) | −0.0015 (3) | 0.0035 (3) |
C1 | 0.0247 (5) | 0.0183 (5) | 0.0246 (5) | 0.0002 (4) | 0.0004 (4) | 0.0021 (4) |
C2 | 0.0246 (5) | 0.0294 (6) | 0.0277 (6) | 0.0031 (4) | −0.0008 (4) | 0.0081 (4) |
C3 | 0.0224 (5) | 0.0410 (6) | 0.0209 (5) | −0.0083 (4) | −0.0023 (4) | 0.0072 (4) |
C4 | 0.0274 (5) | 0.0303 (5) | 0.0210 (5) | −0.0109 (4) | −0.0013 (4) | −0.0011 (4) |
C5 | 0.0225 (5) | 0.0183 (4) | 0.0216 (5) | −0.0041 (3) | −0.0006 (4) | −0.0007 (3) |
C6 | 0.0178 (4) | 0.0160 (4) | 0.0189 (4) | −0.0033 (3) | 0.0006 (3) | 0.0015 (3) |
C7 | 0.0156 (4) | 0.0158 (4) | 0.0222 (5) | −0.0027 (3) | −0.0004 (3) | 0.0010 (3) |
C8 | 0.0156 (4) | 0.0140 (4) | 0.0165 (4) | −0.0020 (3) | −0.0032 (3) | −0.0019 (3) |
C9 | 0.0291 (7) | 0.0679 (10) | 0.0258 (6) | −0.0130 (6) | −0.0079 (5) | 0.0127 (6) |
O1—C8 | 1.2421 (11) | C2—H2A | 0.962 (17) |
N1—C6 | 1.3995 (13) | C3—C4 | 1.3867 (17) |
N1—C7 | 1.4437 (12) | C3—C9 | 1.5094 (17) |
N1—H1N1 | 0.876 (15) | C4—C5 | 1.3961 (15) |
N2—C8 | 1.3313 (12) | C4—H4A | 0.988 (15) |
N2—N3 | 1.4205 (11) | C5—C6 | 1.3978 (14) |
N2—H1N2 | 0.886 (15) | C5—H5A | 0.979 (15) |
N3—H1N3 | 0.902 (14) | C7—C8 | 1.5213 (13) |
N3—H2N3 | 0.912 (15) | C7—H7A | 0.978 (14) |
C1—C2 | 1.3850 (16) | C7—H7B | 0.989 (14) |
C1—C6 | 1.4022 (13) | C9—H9A | 0.97 (2) |
C1—H1A | 0.993 (15) | C9—H9B | 0.96 (2) |
C2—C3 | 1.3963 (18) | C9—H9C | 1.04 (2) |
C6—N1—C7 | 120.37 (8) | C4—C5—C6 | 120.25 (10) |
C6—N1—H1N1 | 115.9 (10) | C4—C5—H5A | 119.3 (9) |
C7—N1—H1N1 | 113.7 (10) | C6—C5—H5A | 120.4 (9) |
C8—N2—N3 | 122.60 (8) | C5—C6—N1 | 122.90 (9) |
C8—N2—H1N2 | 120.9 (10) | C5—C6—C1 | 118.06 (10) |
N3—N2—H1N2 | 115.5 (10) | N1—C6—C1 | 118.97 (9) |
N2—N3—H1N3 | 107.5 (9) | N1—C7—C8 | 113.36 (8) |
N2—N3—H2N3 | 106.4 (9) | N1—C7—H7A | 114.3 (8) |
H1N3—N3—H2N3 | 107.4 (12) | C8—C7—H7A | 106.5 (8) |
C2—C1—C6 | 120.65 (10) | N1—C7—H7B | 107.1 (8) |
C2—C1—H1A | 119.7 (9) | C8—C7—H7B | 108.4 (8) |
C6—C1—H1A | 119.6 (9) | H7A—C7—H7B | 107.0 (12) |
C1—C2—C3 | 121.82 (10) | O1—C8—N2 | 123.22 (9) |
C1—C2—H2A | 118.2 (10) | O1—C8—C7 | 121.37 (9) |
C3—C2—H2A | 120.0 (10) | N2—C8—C7 | 115.40 (8) |
C4—C3—C2 | 117.19 (10) | C3—C9—H9A | 113.1 (13) |
C4—C3—C9 | 121.88 (12) | C3—C9—H9B | 111.3 (12) |
C2—C3—C9 | 120.92 (12) | H9A—C9—H9B | 111.5 (17) |
C3—C4—C5 | 122.03 (10) | C3—C9—H9C | 112.3 (12) |
C3—C4—H4A | 120.2 (9) | H9A—C9—H9C | 103.7 (17) |
C5—C4—H4A | 117.8 (9) | H9B—C9—H9C | 104.4 (17) |
C6—C1—C2—C3 | −0.26 (17) | C7—N1—C6—C1 | −172.79 (9) |
C1—C2—C3—C4 | −0.06 (17) | C2—C1—C6—C5 | 0.35 (15) |
C1—C2—C3—C9 | 179.61 (11) | C2—C1—C6—N1 | −176.67 (9) |
C2—C3—C4—C5 | 0.28 (16) | C6—N1—C7—C8 | −83.08 (11) |
C9—C3—C4—C5 | −179.38 (11) | N3—N2—C8—O1 | 2.92 (14) |
C3—C4—C5—C6 | −0.19 (16) | N3—N2—C8—C7 | −176.34 (8) |
C4—C5—C6—N1 | 176.77 (9) | N1—C7—C8—O1 | 169.09 (8) |
C4—C5—C6—C1 | −0.13 (15) | N1—C7—C8—N2 | −11.63 (12) |
C7—N1—C6—C5 | 10.34 (14) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N1···O1i | 0.875 (17) | 2.162 (17) | 3.0271 (11) | 170.0 (13) |
N2—H1N2···N3ii | 0.887 (17) | 2.287 (16) | 3.0302 (12) | 141.3 (13) |
N3—H1N3···O1iii | 0.901 (14) | 2.252 (13) | 3.0614 (11) | 149.4 (13) |
N3—H2N3···O1iv | 0.914 (14) | 2.281 (15) | 3.0889 (12) | 147.1 (12) |
C7—H7B···N3v | 0.991 (15) | 2.545 (14) | 3.4341 (14) | 149.2 (11) |
C9—H9B···Cgiv | 0.96 (2) | 2.94 (2) | 3.7469 (16) | 142.3 (14) |
Symmetry codes: (i) x, y+1, z; (ii) −x, −y+1, −z+1; (iii) −x+1, −y, −z+1; (iv) x−1, y, z; (v) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C9H13N3O |
Mr | 179.22 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 5.1481 (1), 5.9262 (2), 15.4756 (4) |
α, β, γ (°) | 87.002 (2), 84.282 (2), 82.849 (2) |
V (Å3) | 465.76 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.52 × 0.15 × 0.07 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.956, 0.994 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11697, 2703, 2301 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.703 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.110, 1.03 |
No. of reflections | 2703 |
No. of parameters | 170 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.34, −0.20 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N1···O1i | 0.875 (17) | 2.162 (17) | 3.0271 (11) | 170.0 (13) |
N2—H1N2···N3ii | 0.887 (17) | 2.287 (16) | 3.0302 (12) | 141.3 (13) |
N3—H1N3···O1iii | 0.901 (14) | 2.252 (13) | 3.0614 (11) | 149.4 (13) |
N3—H2N3···O1iv | 0.914 (14) | 2.281 (15) | 3.0889 (12) | 147.1 (12) |
C7—H7B···N3v | 0.991 (15) | 2.545 (14) | 3.4341 (14) | 149.2 (11) |
C9—H9B···Cgiv | 0.96 (2) | 2.94 (2) | 3.7469 (16) | 142.3 (14) |
Symmetry codes: (i) x, y+1, z; (ii) −x, −y+1, −z+1; (iii) −x+1, −y, −z+1; (iv) x−1, y, z; (v) −x+1, −y+1, −z+1. |
Acknowledgements
HKF thanks Universiti Sains Malaysia (USM) for the Research University Golden Goose grant No. 1001/PFIZIK/811012. CSY thanks USM for the award of a USM Fellowship. AMI is grateful to the Head of the Department of Chemistry and Director, NITK, Surathkal, India, for providing research facilities.
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.
In organic chemistry, hydrazides are a class of organic compounds sharing a common functional group characterized by a nitrogen to nitrogen covalent bond with 4 substituents with at least one of them being an acyl group. They are also starting materials for many heterocycles including 1,2,4-triazoles (Isloor et al., 2009; Holla & Udupa, 1992). Many hydrazide derivatives have showed significant biological activities (Ozdemir et al., 2009; Khattab, 2005). In view of the biological and synthetic importance of hydrazides, we hereby report the crystal structure of the title compound (I).
The bond lengths and angles of the title compound (I), (Fig. 1) are comparable to its related structure (Zhang & Shi, 2009). A maximum deviation of 0.028 (1) Å for atom N2 from the mean plane of the hydrazide group form by atoms O1, N2, N3, C7 and C8 indicates that it is essentially coplanar. The mean plane of the hydrazide makes dihedral angle of 83.34 (5)° with C1–C6 benzene ring. In the crystal structure, the molecules are linked by intermolecular N1—H1N1···O1i, N2—H1N2···N3ii, N3—H1N3···O1iii, N3—H2N3···O1iv and C7—H7B···N3v (see Table 1 for symmetry codes) hydrogen bonds into two-dimensional network parallel to ab plane (Fig. 2, Table 1). The crystal structure is also stabilized by a C—H···π interaction (Table 1).