organic compounds
2-Phenoxyacetohydrazide
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, bDepartment of Chemistry, National Institute of Technology-Karnataka, Surathkal, Mangalore 575 025, India, cDepartment of Chemistry, Manipal Institute of Technology, Manipal University, 576 104, India, and dDepartment of Printing and Media Engineering, Manipal Institute of Technology, Manipal University, 576 104, India
*Correspondence e-mail: hkfun@usm.my
In the title compound, C8H10N2O2, the acetohydrazide group is almost planar, with an r.m.s. deviation of 0.028 Å. In the crystal, the molecules are linked by intermolecular C—H⋯O, N—H⋯O and N—H⋯N hydrogen bonds into infinite sheets lying parallel to (001). The acetohydrazide O atom accepts two N—H⋯O links and one C—H⋯O link.
Related literature
For general background to and biological properties of hydrazine derivatives, see: Rando et al. (2008); Kumar et al. (2009); Kamal et al. (2007); Masunari & Tavares (2007); Rando et al. (2002). For a related structure, see: Fun et al. (2009). For the preparation, see: Holla & Udupa (1992). 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, 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/S1600536809051344/hb5256sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809051344/hb5256Isup2.hkl
Phenol (11 ml, 1.20 mmol), ethyl chloroacetate (12.8 ml, 1.20 mmol) and potassium carbonate (20.75 g, 1.50 mmol) were refluxed in acetone (100 ml) at 80 °C for 18 h. The reaction mixture was then filtered, distilled to remove the acetone and poured into ice cold water with vigorous stirring. The ester, phenoxy ethyl acetate was extracted using ether. The solution was distilled to remove ether. Phenoxy ethyl acetate (8.2 ml, 0.50 mmol) was heated at 100 °C for 10h in absolute alcohol medium (40 ml) with hydrazine hydrate (2.5 ml, 0.50 mmol). The reaction mixture was allowed to cool, the solid separated was filtered, dried and recrystallized from ethanol. The yield was found to be 5.7 g (69 %). M. p. 381-383 K (Holla & Udupa, 1992).
Atoms H1N1, H1N2 and H2N2 were located from the difference Fourier map and refined freely. The remaining H atoms were positioned geometrically and refined using a riding model, with C-H = 0.93 and 0.97 Å and Uiso(H) = 1.2 Ueq(C). In the absence of significant
648 Friedel pairs were merged for the final refinement.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).C8H10N2O2 | F(000) = 176 |
Mr = 166.18 | Dx = 1.362 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 2286 reflections |
a = 6.3397 (8) Å | θ = 3.3–30.1° |
b = 4.0590 (6) Å | µ = 0.10 mm−1 |
c = 15.948 (2) Å | T = 100 K |
β = 99.218 (10)° | Needle, colourless |
V = 405.09 (10) Å3 | 0.63 × 0.16 × 0.08 mm |
Z = 2 |
Bruker SMART APEXII CCD diffractometer | 1063 independent reflections |
Radiation source: fine-focus sealed tube | 916 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.045 |
ϕ and ω scans | θmax = 27.5°, θmin = 2.6° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −8→8 |
Tmin = 0.940, Tmax = 0.992 | k = −5→5 |
3771 measured reflections | l = −20→19 |
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)] = 0.047 | 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) + (0.0857P)2] where P = (Fo2 + 2Fc2)/3 |
1063 reflections | (Δ/σ)max < 0.001 |
121 parameters | Δρmax = 0.25 e Å−3 |
1 restraint | Δρmin = −0.25 e Å−3 |
C8H10N2O2 | V = 405.09 (10) Å3 |
Mr = 166.18 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 6.3397 (8) Å | µ = 0.10 mm−1 |
b = 4.0590 (6) Å | T = 100 K |
c = 15.948 (2) Å | 0.63 × 0.16 × 0.08 mm |
β = 99.218 (10)° |
Bruker SMART APEXII CCD diffractometer | 1063 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 916 reflections with I > 2σ(I) |
Tmin = 0.940, Tmax = 0.992 | Rint = 0.045 |
3771 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 1 restraint |
wR(F2) = 0.124 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | Δρmax = 0.25 e Å−3 |
1063 reflections | Δρmin = −0.25 e Å−3 |
121 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 | 0.5379 (2) | 0.5753 (5) | 0.30334 (10) | 0.0244 (5) | |
O2 | 0.9591 (3) | 0.0417 (5) | 0.39131 (11) | 0.0253 (5) | |
N1 | 0.6740 (3) | 0.2420 (6) | 0.44403 (13) | 0.0209 (5) | |
N2 | 0.7205 (3) | 0.0646 (7) | 0.52119 (14) | 0.0232 (5) | |
C1 | 0.2408 (4) | 0.8607 (7) | 0.23319 (17) | 0.0258 (6) | |
H1A | 0.1973 | 0.8907 | 0.2857 | 0.031* | |
C2 | 0.1199 (4) | 0.9836 (7) | 0.16016 (18) | 0.0303 (7) | |
H2A | −0.0059 | 1.0965 | 0.1639 | 0.036* | |
C3 | 0.1825 (4) | 0.9417 (8) | 0.08136 (18) | 0.0309 (7) | |
H3A | 0.0997 | 1.0250 | 0.0326 | 0.037* | |
C4 | 0.3696 (4) | 0.7745 (8) | 0.07658 (16) | 0.0295 (7) | |
H4A | 0.4122 | 0.7443 | 0.0239 | 0.035* | |
C5 | 0.4956 (4) | 0.6502 (7) | 0.14908 (16) | 0.0258 (6) | |
H5A | 0.6228 | 0.5413 | 0.1453 | 0.031* | |
C6 | 0.4291 (4) | 0.6909 (7) | 0.22719 (15) | 0.0214 (6) | |
C7 | 0.7239 (4) | 0.3818 (7) | 0.29959 (16) | 0.0220 (6) | |
H7A | 0.8382 | 0.5223 | 0.2867 | 0.026* | |
H7B | 0.6931 | 0.2193 | 0.2547 | 0.026* | |
C8 | 0.7937 (3) | 0.2108 (7) | 0.38313 (15) | 0.0204 (5) | |
H1N1 | 0.567 (5) | 0.375 (11) | 0.4326 (19) | 0.041 (9)* | |
H1N2 | 0.785 (5) | −0.132 (9) | 0.5068 (17) | 0.028 (8)* | |
H2N2 | 0.822 (5) | 0.192 (9) | 0.5594 (16) | 0.025 (8)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0127 (8) | 0.0297 (10) | 0.0306 (9) | 0.0070 (9) | 0.0027 (6) | 0.0003 (10) |
O2 | 0.0106 (7) | 0.0249 (10) | 0.0406 (10) | 0.0054 (9) | 0.0043 (7) | −0.0005 (9) |
N1 | 0.0087 (8) | 0.0220 (12) | 0.0313 (11) | 0.0008 (9) | 0.0011 (8) | 0.0003 (10) |
N2 | 0.0128 (9) | 0.0240 (12) | 0.0324 (12) | 0.0001 (11) | 0.0021 (8) | 0.0002 (12) |
C1 | 0.0160 (11) | 0.0247 (15) | 0.0372 (14) | 0.0009 (12) | 0.0056 (10) | 0.0005 (13) |
C2 | 0.0162 (11) | 0.0268 (16) | 0.0462 (16) | 0.0008 (12) | 0.0001 (11) | 0.0014 (14) |
C3 | 0.0267 (13) | 0.0245 (14) | 0.0373 (15) | −0.0017 (14) | −0.0072 (11) | 0.0023 (13) |
C4 | 0.0320 (14) | 0.0251 (16) | 0.0308 (13) | 0.0006 (14) | 0.0034 (11) | 0.0004 (13) |
C5 | 0.0192 (12) | 0.0235 (15) | 0.0348 (13) | 0.0008 (12) | 0.0043 (10) | −0.0014 (12) |
C6 | 0.0143 (10) | 0.0179 (12) | 0.0311 (13) | −0.0030 (11) | 0.0003 (9) | 0.0004 (12) |
C7 | 0.0098 (10) | 0.0221 (14) | 0.0345 (13) | 0.0019 (11) | 0.0048 (9) | −0.0033 (12) |
C8 | 0.0102 (10) | 0.0172 (11) | 0.0329 (13) | −0.0029 (11) | 0.0004 (9) | −0.0045 (12) |
O1—C6 | 1.379 (3) | C2—C3 | 1.388 (4) |
O1—C7 | 1.425 (3) | C2—H2A | 0.9300 |
O2—C8 | 1.243 (3) | C3—C4 | 1.379 (4) |
N1—C8 | 1.331 (3) | C3—H3A | 0.9300 |
N1—N2 | 1.416 (3) | C4—C5 | 1.391 (4) |
N1—H1N1 | 0.86 (4) | C4—H4A | 0.9300 |
N2—H1N2 | 0.94 (4) | C5—C6 | 1.387 (3) |
N2—H2N2 | 0.96 (3) | C5—H5A | 0.9300 |
C1—C2 | 1.381 (4) | C7—C8 | 1.505 (4) |
C1—C6 | 1.395 (3) | C7—H7A | 0.9700 |
C1—H1A | 0.9300 | C7—H7B | 0.9700 |
C6—O1—C7 | 116.79 (18) | C3—C4—H4A | 119.4 |
C8—N1—N2 | 121.5 (2) | C5—C4—H4A | 119.4 |
C8—N1—H1N1 | 115 (2) | C6—C5—C4 | 119.1 (2) |
N2—N1—H1N1 | 123 (2) | C6—C5—H5A | 120.4 |
N1—N2—H1N2 | 104.9 (17) | C4—C5—H5A | 120.4 |
N1—N2—H2N2 | 107.6 (19) | O1—C6—C5 | 124.7 (2) |
H1N2—N2—H2N2 | 110 (3) | O1—C6—C1 | 114.9 (2) |
C2—C1—C6 | 119.1 (2) | C5—C6—C1 | 120.5 (2) |
C2—C1—H1A | 120.5 | O1—C7—C8 | 110.18 (19) |
C6—C1—H1A | 120.5 | O1—C7—H7A | 109.6 |
C1—C2—C3 | 121.2 (2) | C8—C7—H7A | 109.6 |
C1—C2—H2A | 119.4 | O1—C7—H7B | 109.6 |
C3—C2—H2A | 119.4 | C8—C7—H7B | 109.6 |
C4—C3—C2 | 118.9 (2) | H7A—C7—H7B | 108.1 |
C4—C3—H3A | 120.5 | O2—C8—N1 | 123.1 (2) |
C2—C3—H3A | 120.5 | O2—C8—C7 | 118.1 (2) |
C3—C4—C5 | 121.1 (2) | N1—C8—C7 | 118.7 (2) |
C6—C1—C2—C3 | −0.1 (4) | C2—C1—C6—O1 | −179.5 (2) |
C1—C2—C3—C4 | −0.1 (4) | C2—C1—C6—C5 | 0.9 (4) |
C2—C3—C4—C5 | −0.4 (5) | C6—O1—C7—C8 | −166.8 (2) |
C3—C4—C5—C6 | 1.2 (4) | N2—N1—C8—O2 | −4.2 (4) |
C7—O1—C6—C5 | −4.4 (4) | N2—N1—C8—C7 | 174.4 (2) |
C7—O1—C6—C1 | 176.0 (2) | O1—C7—C8—O2 | −177.3 (2) |
C4—C5—C6—O1 | 179.0 (2) | O1—C7—C8—N1 | 4.0 (3) |
C4—C5—C6—C1 | −1.4 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N1···N2i | 0.86 (4) | 2.21 (3) | 2.953 (3) | 144 (3) |
N2—H1N2···O2ii | 0.94 (4) | 2.49 (3) | 3.110 (3) | 124 (2) |
N2—H2N2···O2iii | 0.96 (3) | 2.05 (3) | 2.986 (3) | 163 (2) |
C1—H1A···O2iv | 0.93 | 2.51 | 3.396 (3) | 159 |
Symmetry codes: (i) −x+1, y+1/2, −z+1; (ii) −x+2, y−1/2, −z+1; (iii) −x+2, y+1/2, −z+1; (iv) x−1, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C8H10N2O2 |
Mr | 166.18 |
Crystal system, space group | Monoclinic, P21 |
Temperature (K) | 100 |
a, b, c (Å) | 6.3397 (8), 4.0590 (6), 15.948 (2) |
β (°) | 99.218 (10) |
V (Å3) | 405.09 (10) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.63 × 0.16 × 0.08 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.940, 0.992 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3771, 1063, 916 |
Rint | 0.045 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.124, 1.07 |
No. of reflections | 1063 |
No. of parameters | 121 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.25, −0.25 |
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···N2i | 0.86 (4) | 2.21 (3) | 2.953 (3) | 144 (3) |
N2—H1N2···O2ii | 0.94 (4) | 2.49 (3) | 3.110 (3) | 124 (2) |
N2—H2N2···O2iii | 0.96 (3) | 2.05 (3) | 2.986 (3) | 163 (2) |
C1—H1A···O2iv | 0.93 | 2.51 | 3.396 (3) | 159 |
Symmetry codes: (i) −x+1, y+1/2, −z+1; (ii) −x+2, y−1/2, −z+1; (iii) −x+2, y+1/2, −z+1; (iv) x−1, y+1, z. |
Acknowledgements
HKF and CKQ thank Universiti Sains Malaysia (USM) for the Research University Golden Goose Grant (1001/PFIZIK/811012). CKQ thanks USM for a Research Fellowship. AMI is grateful to the Director, NITK-Surathkal, India, for providing the research facilities, and to the Head of the Department of Chemistry & Dean R&D, NITK Surathkal, for their encouragement.
References
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Hydrazine derivatives have been reported to possess several biological properties. 5-nitro-2-heterocyclic benzylidine hydrazides were found to possess antileishmanial activities (Rando et al., 2008). Many substituted benzoic acid furan-2-yl-methylene hydrazides showed potent antimicrobial properties (Kumar et al., 2009). Hydrazine derivatives were also associated with remarkable anticancer (Kamal et al., 2007), antibacterial (Masunari & Tavares, 2007) and tuberculostatic (Rando et al., 2002) activities.
The molecular structure is shown in Fig. 1. The acetohydrazide group (C7/C8/N1/N2/O2) is almost planar, with an r.m.s. deviation of 0.028 Å. Bond lengths and angles are within normal ranges, and comparable to a closely related structure (Fun et al., 2009). In the crystal packing (Fig. 2), the molecules are linked via intermolecular C1—H1A···O2, N2—H1N2···O2 and N2—H2N2···O2 trifurcated acceptor bonds, together with N1—H1N1···N2 hydrogen bonds, into infinite two-dimensional networks parallel to plane (0 0 1).