organic compounds
(E)-N′-(2-Furylmethylene)benzohydrazide
aCollege of Chemistry and Chemical Technology, Binzhou University, Binzhou 256600, Shandong, People's Republic of China
*Correspondence e-mail: fanchuangang2009@163.com
In the title compound, C12H10N2O2, the dihedral angle between the benzene and furan rings is 52.54 (7)°. In the crystal, intermolecular N—H⋯O hydrogen bonds and C—H⋯π interactions link the molecules.
Related literature
For biological properties of Schiff base ligands, see: Chakraborty et al. (1996); Jeewoth et al. (1999). For related crystal structures, see: Fun et al. (2008); Cui et al. (2009); Nie (2008).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Siemens, 1996); cell SAINT (Siemens, 1996); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536809042251/bq2168sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809042251/bq2168Isup2.hkl
Benzohydrazide (5.0 mmol), 20 ml ethanol and furfural (5.0 mmol) were mixed in 50 ml flash. After refluxing 3 h, the resulting mixture was cooled to room temperature, and recrystalized from ethanol, and afforded the title compound as a crystalline solid. Elemental analysis: calculated for C12H10N2O2: C 67.28, H 4.71, N 13.08%; found: C 67.16, H 4.66, N 13.19%.
All H atoms were placed in geometrically idealized positions (N—H 0.86 and C—H 0.93 Å) and treated as riding on their parent atoms, with Uiso(H) = 1.2U5eq(C) (C,N).
Conventionally,
derived from a large number of and It has been shown that Schiff base compounds have strong anticancer activity (Chakraborty et al., 1996). It has been well known that a series of certain Schiff base compounds, have received considerable attention during the last decades, mainly because their structures or for their biological properties (Jeewoth et al., 1999).In the compound (I), (Fig. 1), the bond lengths an angles are normal and are comparable to the values observed in similar compounds (Nie et al., 2008; Fun et al., 2008; Cui et al., 2009).
In the
the C=N bond length in the molecule is 1.273 (2) ° (C8=N2), showing the double-bond character. Meanwhile, the dihedral angle between the benzene ring (C2-C7) and the furan ring (C9-C12/O2) in the Schiff base molecule is 52.54 (7)°, indicating that the two aromatic ring planes are not coplanar.Moreover, the crystal supramolecular structure was built from the connections of intermolecular N—H···O hydrogen bonds and C-H···π hydrogen bonding interactions, as shown in Table 1.
For biological properties of Schiff base ligands, see: Chakraborty, et al.(1996); Jeewoth et al.(1999). For related crystal structures, see: Fun et al.(2008); Cui et al.(2009); Nie (2008). Cg1 is the centroid of the C2–C7 ring.
Data collection: SMART (Siemens, 1996); cell
SAINT (Siemens, 1996); data reduction: SAINT (Siemens, 1996); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C12H10N2O2 | F(000) = 448 |
Mr = 214.22 | Dx = 1.336 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 1760 reflections |
a = 12.3955 (11) Å | θ = 2.8–25.6° |
b = 9.4777 (9) Å | µ = 0.09 mm−1 |
c = 9.6845 (10) Å | T = 298 K |
β = 110.610 (1)° | Needle, green |
V = 1064.93 (18) Å3 | 0.43 × 0.38 × 0.30 mm |
Z = 4 |
Bruker SMART APEX CCD area-detector diffractometer | 1882 independent reflections |
Radiation source: fine-focus sealed tube | 1360 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.032 |
phi and ω scans | θmax = 25.0°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −14→14 |
Tmin = 0.961, Tmax = 0.973 | k = −11→5 |
5190 measured reflections | l = −11→11 |
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)] = 0.038 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.103 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0444P)2 + 0.2066P] where P = (Fo2 + 2Fc2)/3 |
1882 reflections | (Δ/σ)max < 0.001 |
145 parameters | Δρmax = 0.18 e Å−3 |
0 restraints | Δρmin = −0.20 e Å−3 |
C12H10N2O2 | V = 1064.93 (18) Å3 |
Mr = 214.22 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 12.3955 (11) Å | µ = 0.09 mm−1 |
b = 9.4777 (9) Å | T = 298 K |
c = 9.6845 (10) Å | 0.43 × 0.38 × 0.30 mm |
β = 110.610 (1)° |
Bruker SMART APEX CCD area-detector diffractometer | 1882 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1360 reflections with I > 2σ(I) |
Tmin = 0.961, Tmax = 0.973 | Rint = 0.032 |
5190 measured reflections |
R[F2 > 2σ(F2)] = 0.038 | 0 restraints |
wR(F2) = 0.103 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.18 e Å−3 |
1882 reflections | Δρmin = −0.20 e Å−3 |
145 parameters |
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 | ||
N1 | 0.23549 (11) | 0.22758 (14) | 0.10288 (15) | 0.0393 (4) | |
H1 | 0.2462 | 0.2263 | 0.1956 | 0.047* | |
N2 | 0.18065 (12) | 0.11622 (15) | 0.01303 (15) | 0.0394 (4) | |
O1 | 0.26227 (11) | 0.34211 (13) | −0.08757 (13) | 0.0525 (4) | |
O2 | 0.05357 (11) | −0.11197 (14) | −0.14345 (14) | 0.0552 (4) | |
C1 | 0.27183 (14) | 0.33810 (18) | 0.04323 (18) | 0.0369 (4) | |
C2 | 0.32908 (13) | 0.45449 (17) | 0.14650 (18) | 0.0357 (4) | |
C3 | 0.31657 (15) | 0.47508 (18) | 0.28218 (19) | 0.0439 (4) | |
H3 | 0.2698 | 0.4148 | 0.3122 | 0.053* | |
C4 | 0.37320 (17) | 0.5846 (2) | 0.3724 (2) | 0.0539 (5) | |
H4 | 0.3642 | 0.5982 | 0.4628 | 0.065* | |
C5 | 0.44318 (17) | 0.6740 (2) | 0.3290 (2) | 0.0576 (6) | |
H5 | 0.4822 | 0.7468 | 0.3908 | 0.069* | |
C6 | 0.45522 (16) | 0.6555 (2) | 0.1942 (2) | 0.0553 (5) | |
H6 | 0.5019 | 0.7161 | 0.1646 | 0.066* | |
C7 | 0.39802 (15) | 0.5469 (2) | 0.1033 (2) | 0.0460 (5) | |
H7 | 0.4057 | 0.5354 | 0.0118 | 0.055* | |
C8 | 0.17622 (14) | 0.00187 (18) | 0.07975 (19) | 0.0407 (4) | |
H8 | 0.2088 | −0.0011 | 0.1821 | 0.049* | |
C9 | 0.12239 (14) | −0.12242 (18) | 0.00150 (19) | 0.0406 (4) | |
C10 | 0.12911 (17) | −0.2579 (2) | 0.0460 (2) | 0.0574 (5) | |
H10 | 0.1701 | −0.2924 | 0.1398 | 0.069* | |
C11 | 0.06160 (19) | −0.3374 (2) | −0.0779 (3) | 0.0693 (6) | |
H11 | 0.0504 | −0.4346 | −0.0818 | 0.083* | |
C12 | 0.01745 (18) | −0.2464 (3) | −0.1875 (3) | 0.0635 (6) | |
H12 | −0.0316 | −0.2708 | −0.2817 | 0.076* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0512 (9) | 0.0397 (8) | 0.0276 (7) | −0.0026 (7) | 0.0147 (6) | −0.0027 (6) |
N2 | 0.0459 (8) | 0.0386 (8) | 0.0341 (8) | −0.0018 (7) | 0.0146 (6) | −0.0038 (7) |
O1 | 0.0821 (9) | 0.0482 (8) | 0.0309 (7) | −0.0056 (7) | 0.0245 (6) | −0.0012 (6) |
O2 | 0.0565 (8) | 0.0579 (9) | 0.0459 (8) | −0.0045 (7) | 0.0116 (6) | −0.0062 (7) |
C1 | 0.0414 (9) | 0.0386 (10) | 0.0318 (9) | 0.0061 (8) | 0.0142 (7) | 0.0030 (8) |
C2 | 0.0383 (9) | 0.0362 (9) | 0.0332 (9) | 0.0047 (7) | 0.0134 (7) | 0.0017 (8) |
C3 | 0.0554 (11) | 0.0432 (10) | 0.0381 (10) | −0.0067 (9) | 0.0225 (8) | −0.0012 (8) |
C4 | 0.0699 (13) | 0.0579 (13) | 0.0391 (11) | −0.0131 (10) | 0.0257 (10) | −0.0102 (9) |
C5 | 0.0634 (12) | 0.0576 (13) | 0.0502 (12) | −0.0191 (11) | 0.0180 (10) | −0.0126 (10) |
C6 | 0.0571 (12) | 0.0598 (13) | 0.0522 (12) | −0.0185 (10) | 0.0233 (10) | −0.0014 (10) |
C7 | 0.0509 (11) | 0.0534 (11) | 0.0386 (10) | −0.0041 (9) | 0.0218 (9) | 0.0008 (9) |
C8 | 0.0451 (10) | 0.0430 (10) | 0.0338 (9) | 0.0013 (8) | 0.0136 (8) | −0.0006 (8) |
C9 | 0.0428 (10) | 0.0429 (11) | 0.0378 (10) | 0.0015 (8) | 0.0162 (8) | −0.0012 (8) |
C10 | 0.0647 (13) | 0.0460 (12) | 0.0627 (13) | 0.0011 (10) | 0.0241 (11) | 0.0039 (11) |
C11 | 0.0781 (15) | 0.0457 (12) | 0.0926 (19) | −0.0118 (12) | 0.0406 (14) | −0.0163 (13) |
C12 | 0.0560 (12) | 0.0711 (15) | 0.0633 (14) | −0.0171 (12) | 0.0210 (11) | −0.0292 (13) |
N1—C1 | 1.348 (2) | C5—C6 | 1.376 (3) |
N1—N2 | 1.3844 (19) | C5—H5 | 0.9300 |
N1—H1 | 0.8600 | C6—C7 | 1.377 (3) |
N2—C8 | 1.273 (2) | C6—H6 | 0.9300 |
O1—C1 | 1.2306 (19) | C7—H7 | 0.9300 |
O2—C9 | 1.366 (2) | C8—C9 | 1.432 (2) |
O2—C12 | 1.368 (2) | C8—H8 | 0.9300 |
C1—C2 | 1.490 (2) | C9—C10 | 1.348 (3) |
C2—C7 | 1.387 (2) | C10—C11 | 1.415 (3) |
C2—C3 | 1.390 (2) | C10—H10 | 0.9300 |
C3—C4 | 1.379 (2) | C11—C12 | 1.327 (3) |
C3—H3 | 0.9300 | C11—H11 | 0.9300 |
C4—C5 | 1.380 (3) | C12—H12 | 0.9300 |
C4—H4 | 0.9300 | ||
C1—N1—N2 | 119.16 (13) | C5—C6—H6 | 120.1 |
C1—N1—H1 | 120.4 | C7—C6—H6 | 120.1 |
N2—N1—H1 | 120.4 | C6—C7—C2 | 120.79 (17) |
C8—N2—N1 | 115.43 (14) | C6—C7—H7 | 119.6 |
C9—O2—C12 | 105.68 (16) | C2—C7—H7 | 119.6 |
O1—C1—N1 | 122.65 (16) | N2—C8—C9 | 121.81 (16) |
O1—C1—C2 | 121.24 (15) | N2—C8—H8 | 119.1 |
N1—C1—C2 | 116.08 (14) | C9—C8—H8 | 119.1 |
C7—C2—C3 | 118.82 (16) | C10—C9—O2 | 110.11 (16) |
C7—C2—C1 | 117.59 (15) | C10—C9—C8 | 130.51 (17) |
C3—C2—C1 | 123.59 (15) | O2—C9—C8 | 119.36 (15) |
C4—C3—C2 | 120.22 (17) | C9—C10—C11 | 106.54 (19) |
C4—C3—H3 | 119.9 | C9—C10—H10 | 126.7 |
C2—C3—H3 | 119.9 | C11—C10—H10 | 126.7 |
C3—C4—C5 | 120.23 (18) | C12—C11—C10 | 106.65 (19) |
C3—C4—H4 | 119.9 | C12—C11—H11 | 126.7 |
C5—C4—H4 | 119.9 | C10—C11—H11 | 126.7 |
C6—C5—C4 | 120.03 (18) | C11—C12—O2 | 111.01 (18) |
C6—C5—H5 | 120.0 | C11—C12—H12 | 124.5 |
C4—C5—H5 | 120.0 | O2—C12—H12 | 124.5 |
C5—C6—C7 | 119.89 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.14 | 2.972 (2) | 163 |
C10—H10···Cg1ii | 0.93 | 2.85 | 3.498 (2) | 128 |
Symmetry codes: (i) x, −y+1/2, z+1/2; (ii) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C12H10N2O2 |
Mr | 214.22 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 12.3955 (11), 9.4777 (9), 9.6845 (10) |
β (°) | 110.610 (1) |
V (Å3) | 1064.93 (18) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.43 × 0.38 × 0.30 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.961, 0.973 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5190, 1882, 1360 |
Rint | 0.032 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.038, 0.103, 1.05 |
No. of reflections | 1882 |
No. of parameters | 145 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.18, −0.20 |
Computer programs: SMART (Siemens, 1996), SAINT (Siemens, 1996), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O1i | 0.86 | 2.14 | 2.972 (2) | 162.9 |
C10—H10···Cg1ii | 0.93 | 2.8446 | 3.498 (2) | 128.3 |
Symmetry codes: (i) x, −y+1/2, z+1/2; (ii) x, y−1, z. |
Acknowledgements
The authors acknowledge the financial support of the Foundation of Binzhou University (No. BZXYLG200609).
References
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Conventionally, Schiff bases derived from a large number of carbonyl compounds and amines. It has been shown that Schiff base compounds have strong anticancer activity (Chakraborty et al., 1996). It has been well known that a series of certain Schiff base compounds, have received considerable attention during the last decades, mainly because their structures or for their biological properties (Jeewoth et al., 1999).
In the compound (I), (Fig. 1), the bond lengths an angles are normal and are comparable to the values observed in similar compounds (Nie et al., 2008; Fun et al., 2008; Cui et al., 2009).
In the crystal structure, the C=N bond length in the molecule is 1.273 (2) ° (C8=N2), showing the double-bond character. Meanwhile, the dihedral angle between the benzene ring (C2-C7) and the furan ring (C9-C12/O2) in the Schiff base molecule is 52.54 (7)°, indicating that the two aromatic ring planes are not coplanar.
Moreover, the crystal supramolecular structure was built from the connections of intermolecular N—H···O hydrogen bonds and C-H···π hydrogen bonding interactions, as shown in Table 1.