organic compounds
2-(Hydrazonomethyl)phenol
aSchool of Chemistry and Chemical Engineering, Nantong University, Nantong, JiangSu 226000, People's Republic of China, and bInstitute of Molecular Science, Key Laboratory of Chemical Biology and Molecular, Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
*Correspondence e-mail: shangyanfang@ntu.edu.cn
The conformation of the title compound, C7H8N2O, is stabilized by an intramolecular O—H⋯N hydrogen bond. The shows intermolecular N—H⋯O hydrogen bonds.
Related literature
For et al. (2005). For the pharmaceutical and medicinal activity of see: Sriram et al. (2006); Hao (2009); Bedia et al. (2006).
as mixed-donor ligands in coordination chemistry, see: LeeExperimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP (Sheldrick, 2008); software used to prepare material for publication: publCIF (Westrip, 2009).
Supporting information
10.1107/S1600536809045504/bt5112sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809045504/bt5112Isup2.hkl
35% of hydrazine hydrate (0.50 mL, 10 mmol) and salicylidence (0.52 mL, 5 mmol) were mixed in 50.0 mL ethanol and refluxed for 3 h. When the solution was cooled to room temperature, a light yellow solid was obtained, and light yellow block shaped crystals were formed from the filtrate by slow evaporation of the solution in air after a few days. The yield of the isolated yellow solid was 0.62 g.(90%).
H atoms attached to C were placed in geometrically idealized positions with Csp2—H = 0.93 Å and Uiso(H) = 1.2Ueq(C). H atoms bonded to N and O were located in a difference map. They were refined using a riding model with O—H = 0.82 Å and N—H = 0.86 Å and Uiso(H) = 1.2Ueq(N) or 1.5Ueq(O).
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP (Sheldrick, 2008); software used to prepare material for publication: publCIF (Westrip, 2009).C7H8N2O | F(000) = 288 |
Mr = 136.15 | Dx = 1.334 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2298 reflections |
a = 14.1010 (11) Å | θ = 3.0–28.4° |
b = 6.0062 (5) Å | µ = 0.09 mm−1 |
c = 8.1979 (6) Å | T = 296 K |
β = 102.525 (1)° | Block, yellow |
V = 677.78 (9) Å3 | 0.46 × 0.45 × 0.35 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 1203 independent reflections |
Radiation source: fine-focus sealed tube | 1081 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.013 |
ϕ and ω scans | θmax = 25.1°, θmin = 3.0° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −15→16 |
Tmin = 0.959, Tmax = 0.968 | k = −6→7 |
3351 measured reflections | l = −9→8 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.036 | w = 1/[σ2(Fo2) + (0.0587P)2 + 0.1774P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.110 | (Δ/σ)max < 0.001 |
S = 1.06 | Δρmax = 0.33 e Å−3 |
1203 reflections | Δρmin = −0.29 e Å−3 |
93 parameters | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
0 restraints | Extinction coefficient: 0.129 (12) |
Primary atom site location: structure-invariant direct methods |
C7H8N2O | V = 677.78 (9) Å3 |
Mr = 136.15 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 14.1010 (11) Å | µ = 0.09 mm−1 |
b = 6.0062 (5) Å | T = 296 K |
c = 8.1979 (6) Å | 0.46 × 0.45 × 0.35 mm |
β = 102.525 (1)° |
Bruker SMART CCD area-detector diffractometer | 1203 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 1081 reflections with I > 2σ(I) |
Tmin = 0.959, Tmax = 0.968 | Rint = 0.013 |
3351 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 93 parameters |
wR(F2) = 0.110 | 0 restraints |
S = 1.06 | Δρmax = 0.33 e Å−3 |
1203 reflections | Δρmin = −0.29 e Å−3 |
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 | ||
C1 | 0.22022 (10) | −0.1162 (2) | 0.13139 (16) | 0.0374 (4) | |
C2 | 0.27892 (11) | −0.2576 (3) | 0.24310 (18) | 0.0462 (4) | |
H2 | 0.2554 | −0.3958 | 0.2670 | 0.055* | |
C3 | 0.37226 (12) | −0.1944 (3) | 0.3192 (2) | 0.0546 (5) | |
H3 | 0.4111 | −0.2898 | 0.3948 | 0.065* | |
C4 | 0.40836 (11) | 0.0097 (3) | 0.2837 (2) | 0.0568 (5) | |
H4 | 0.4715 | 0.0513 | 0.3339 | 0.068* | |
C5 | 0.34970 (11) | 0.1512 (3) | 0.17277 (19) | 0.0487 (4) | |
H5 | 0.3743 | 0.2881 | 0.1487 | 0.058* | |
C6 | 0.25465 (9) | 0.0945 (2) | 0.09582 (16) | 0.0372 (4) | |
C7 | 0.19290 (10) | 0.2536 (2) | −0.01248 (16) | 0.0392 (4) | |
H7 | 0.2190 | 0.3883 | −0.0376 | 0.047* | |
N1 | 0.10354 (8) | 0.21085 (19) | −0.07344 (14) | 0.0407 (3) | |
N2 | 0.04759 (9) | 0.3659 (2) | −0.17427 (15) | 0.0507 (4) | |
H2A | 0.0693 | 0.4889 | −0.2059 | 0.061* | |
H2B | −0.0089 | 0.3460 | −0.1530 | 0.061* | |
O1 | 0.12928 (7) | −0.18636 (16) | 0.05811 (13) | 0.0476 (3) | |
H1 | 0.0993 | −0.0840 | 0.0039 | 0.071* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0428 (8) | 0.0355 (7) | 0.0358 (7) | −0.0005 (6) | 0.0127 (6) | −0.0036 (5) |
C2 | 0.0587 (9) | 0.0381 (8) | 0.0439 (8) | 0.0040 (6) | 0.0157 (7) | 0.0026 (6) |
C3 | 0.0576 (10) | 0.0566 (10) | 0.0467 (9) | 0.0148 (8) | 0.0050 (7) | 0.0038 (7) |
C4 | 0.0439 (8) | 0.0645 (11) | 0.0574 (10) | 0.0009 (8) | 0.0007 (7) | −0.0041 (8) |
C5 | 0.0468 (8) | 0.0447 (8) | 0.0543 (9) | −0.0070 (6) | 0.0106 (7) | −0.0034 (7) |
C6 | 0.0418 (7) | 0.0351 (7) | 0.0363 (7) | −0.0016 (6) | 0.0118 (5) | −0.0038 (5) |
C7 | 0.0471 (8) | 0.0323 (7) | 0.0399 (7) | −0.0060 (6) | 0.0130 (6) | 0.0003 (6) |
N1 | 0.0468 (7) | 0.0364 (6) | 0.0385 (6) | −0.0013 (5) | 0.0083 (5) | 0.0020 (5) |
N2 | 0.0523 (8) | 0.0466 (8) | 0.0522 (8) | 0.0037 (6) | 0.0092 (6) | 0.0140 (6) |
O1 | 0.0451 (6) | 0.0353 (6) | 0.0607 (7) | −0.0054 (4) | 0.0078 (5) | 0.0039 (5) |
C1—O1 | 1.3597 (16) | C5—C6 | 1.3941 (19) |
C1—C2 | 1.384 (2) | C5—H5 | 0.9300 |
C1—C6 | 1.409 (2) | C6—C7 | 1.4574 (19) |
C2—C3 | 1.382 (2) | C7—N1 | 1.2768 (18) |
C2—H2 | 0.9300 | C7—H7 | 0.9300 |
C3—C4 | 1.382 (2) | N1—N2 | 1.3749 (16) |
C3—H3 | 0.9300 | N2—H2A | 0.8604 |
C4—C5 | 1.381 (2) | N2—H2B | 0.8604 |
C4—H4 | 0.9300 | O1—H1 | 0.8200 |
O1—C1—C2 | 118.26 (12) | C4—C5—H5 | 119.1 |
O1—C1—C6 | 121.42 (12) | C6—C5—H5 | 119.1 |
C2—C1—C6 | 120.32 (13) | C5—C6—C1 | 117.79 (13) |
C3—C2—C1 | 120.28 (14) | C5—C6—C7 | 120.29 (13) |
C3—C2—H2 | 119.9 | C1—C6—C7 | 121.88 (12) |
C1—C2—H2 | 119.9 | N1—C7—C6 | 121.00 (12) |
C2—C3—C4 | 120.46 (15) | N1—C7—H7 | 119.5 |
C2—C3—H3 | 119.8 | C6—C7—H7 | 119.5 |
C4—C3—H3 | 119.8 | C7—N1—N2 | 119.21 (12) |
C5—C4—C3 | 119.27 (15) | N1—N2—H2A | 124.6 |
C5—C4—H4 | 120.4 | N1—N2—H2B | 102.7 |
C3—C4—H4 | 120.4 | H2A—N2—H2B | 125.9 |
C4—C5—C6 | 121.86 (14) | C1—O1—H1 | 109.5 |
O1—C1—C2—C3 | 179.29 (13) | O1—C1—C6—C5 | −178.27 (12) |
C6—C1—C2—C3 | −0.8 (2) | C2—C1—C6—C5 | 1.82 (19) |
C1—C2—C3—C4 | −0.5 (2) | O1—C1—C6—C7 | 4.02 (19) |
C2—C3—C4—C5 | 0.8 (2) | C2—C1—C6—C7 | −175.89 (12) |
C3—C4—C5—C6 | 0.3 (2) | C5—C6—C7—N1 | −174.54 (13) |
C4—C5—C6—C1 | −1.6 (2) | C1—C6—C7—N1 | 3.1 (2) |
C4—C5—C6—C7 | 176.17 (13) | C6—C7—N1—N2 | 179.61 (11) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O1i | 0.86 | 2.56 | 3.3076 (17) | 145 |
N2—H2B···O1ii | 0.86 | 2.23 | 3.0530 (16) | 160 |
O1—H1···N1 | 0.82 | 1.89 | 2.6109 (15) | 147 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C7H8N2O |
Mr | 136.15 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 14.1010 (11), 6.0062 (5), 8.1979 (6) |
β (°) | 102.525 (1) |
V (Å3) | 677.78 (9) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.46 × 0.45 × 0.35 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.959, 0.968 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3351, 1203, 1081 |
Rint | 0.013 |
(sin θ/λ)max (Å−1) | 0.597 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.110, 1.06 |
No. of reflections | 1203 |
No. of parameters | 93 |
Δρmax, Δρmin (e Å−3) | 0.33, −0.29 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP (Sheldrick, 2008), publCIF (Westrip, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O1i | 0.86 | 2.56 | 3.3076 (17) | 145.2 |
N2—H2B···O1ii | 0.86 | 2.23 | 3.0530 (16) | 159.8 |
O1—H1···N1 | 0.82 | 1.89 | 2.6109 (15) | 146.7 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x, −y, −z. |
Acknowledgements
Y-FS acknowledges financial support from the Natural Science Foundation of Nantong University in China (grant No. 07z025).
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.
Schiff bases are one of the most prevalent and important mixed-donor ligand in coordination chemistry (Lee et al., 2005). Recently, the synthesis, structure and properties of Schiff base complexes have stimulated much more interest for their noteworthy contributions in pharmaceutical and medicinal activity (Sriram et al., 2006; Hao 2009; Bedia et al., 2006).
The X-ray structural analysis confirmed the assignment of the structure of the title compound(I). The molecular structure is depicted in Fig. 1, and the crystal packing of the title compound(I) is depicted in Fig. 2. In the crystal structure,intermolecular N—H···O, N—H···N and intramolecular O—H···N hydrogen bonds contribute to form the title compound(I).