metal-organic compounds
[2-Hydroxy-N′-(4-oxo-4-phenylbutan-2-ylidene)benzohydrazidato(2−)]pyridinecopper(II)
aDepartment of Chemistry, Fuyang Normal College, Fuyang, Anhui 236041, People's Republic of China
*Correspondence e-mail: shaosic@fync.edu.cn
The mononuclear title complex, [Cu(C17H14N2O3)(C5H5N)], was synthesized by the reaction of CuCl2·2H2O with N-(4-oxo-4-phenylbutan-2-ylidene)benzohydrazide (H2L). The central CuII atom exhibits a distorted square-planar coordination geometry, defined by two O atoms, one N atom from the ligand and one pyridine N atom with Cu—N distances of 1.874 (4) and 1.963 (4) Å, while the Cu—O distances are 1.857 (3) and 1.890 (3) Å. An intramolecular O—H⋯N interaction occurs.
Related literature
For the biological properties of Schiff base–metal complexes, see: Cozzi (2004). For metallobiomolecules, see: Singh et al. (2007). For metal ions bonded to biologically active compounds, see: Canpolat & Kaya (2004); Yildiz et al. (2004). For a related structure, see: Shen et al. (1997).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2003); cell SAINT (Bruker, 2003); 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/S1600536810047719/bx2325sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810047719/bx2325Isup2.hkl
All reagents and solvents were used as obtained commercially without further purification. CuCl2.2H2O (0.170 mg, 0.1 mmol) was dissolved in 6 ml deionized water, giving a transparent solution, and 1 mL pyridine solution dissolved with L (28.2 mg, 0.1 mmol) was dropwised for 0.5 h. After stirring for 8 h, the solution was filtered. Black single crystals of the title compound were obtained from the filtrate after 3 weeks. Analysis calculated (%): C, 60.47; H, 4.38; N, 9.62%; Found: C, 60.15; H, 4.59; N, 9.49%.
H atoms bonded to C atoms were placed geometrically and treated as riding, with C—H distances 0.93–0.96Å and Uiso(H) = 1.2Ueq(C) for the CH while Uiso(H) = 1.5Ueq(C) for the CH3 groups. The hydroxyl H atoms were located from difference maps and refined with the O—H distances restrained to 0.82 Å and Uiso(H) = 1.5Ueq(O).
Schiff base metal complexes have been widely studied because they have industrial, antifungal, antibacterial, anticancer and herbicidal applications (Cozzi, 2004). It is well known that N atoms play a key role in the coordination of metals at the active sites of numerous metallobiomolecules (Singh, et al., 2007). They serve as models for biological important species and find applications in biomimetic catalytic reactions. Chelating ligands containing N and O donor atoms show broad biological activity and are of special interest because of the variety of ways in which they are bonded to metal ions. It is known that the existence of metal ions bonded to biologically active compounds may enhance their activities (Canpolat, et al., 2004; Yildiz, et al., 2004). Therefore, it is an important study to design and synthesis of new multidentate ligands cotaining N and O atoms and apply to synthesize complexes.
The
is composed of one mononuclear complex, (Fig.1). The central CuII atom exhibits a distorted square-plannar coordination geometry, defined by two O atoms, one N atom from the ligand molecule and one N atom of the pyridine molecule with Cu—N distances of 1.874 (4) and 1.963 (4) Å while Cu—O distances are 1.857 (3) and 1.890 (3) Å respectively. The Cu—N and Cu—O distances are comparable to those found in other crystallographically characterized CuII complex (Shen, et al. 1997). The of the title compound is stabilized by one intramolecular O—H···N interactions with average H···N distances 1.78Å and O—H···N angle 146.3°.For the biological properties of Schiff base–metal complexes, see: Cozzi (2004). For metallobiomolecules, see: Singh et al. (2007). For metal ions bonded to biologically active compounds, see: Canpolat et al. (2004); Yildiz et al. (2004). For a related structure, see: Shen et al. (1997).
Data collection: APEX2 (Bruker, 2003); cell
SAINT (Bruker, 2003); data reduction: SAINT (Bruker, 2003); 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).Fig. 1. The molecular structure of the title compound, showing 30% probability displacement ellipsoids. |
[Cu(C17H14N2O3)(C5H5N)] | F(000) = 1800 |
Mr = 436.94 | Dx = 1.566 Mg m−3 |
Orthorhombic, C2221 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: C 2c 2 | Cell parameters from 3542 reflections |
a = 7.7096 (8) Å | θ = 2.1–23.1° |
b = 22.906 (2) Å | µ = 1.21 mm−1 |
c = 20.983 (2) Å | T = 298 K |
V = 3705.6 (7) Å3 | Block, dark green |
Z = 8 | 0.28 × 0.20 × 0.20 mm |
Bruker SMART APEXII CCD diffractometer | 4034 independent reflections |
Radiation source: fine-focus sealed tube | 3340 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.050 |
phi and ω scans | θmax = 27.0°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −9→9 |
Tmin = 0.728, Tmax = 0.794 | k = −29→27 |
13526 measured reflections | l = −26→26 |
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)] = 0.057 | H-atom parameters constrained |
wR(F2) = 0.131 | w = 1/[σ2(Fo2) + (0.0614P)2 + 1.8583P] where P = (Fo2 + 2Fc2)/3 |
S = 1.08 | (Δ/σ)max = 0.003 |
4034 reflections | Δρmax = 0.45 e Å−3 |
252 parameters | Δρmin = −0.56 e Å−3 |
0 restraints | Absolute structure: Flack (1983), 1761 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.08 (3) |
[Cu(C17H14N2O3)(C5H5N)] | V = 3705.6 (7) Å3 |
Mr = 436.94 | Z = 8 |
Orthorhombic, C2221 | Mo Kα radiation |
a = 7.7096 (8) Å | µ = 1.21 mm−1 |
b = 22.906 (2) Å | T = 298 K |
c = 20.983 (2) Å | 0.28 × 0.20 × 0.20 mm |
Bruker SMART APEXII CCD diffractometer | 4034 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 3340 reflections with I > 2σ(I) |
Tmin = 0.728, Tmax = 0.794 | Rint = 0.050 |
13526 measured reflections |
R[F2 > 2σ(F2)] = 0.057 | H-atom parameters constrained |
wR(F2) = 0.131 | Δρmax = 0.45 e Å−3 |
S = 1.08 | Δρmin = −0.56 e Å−3 |
4034 reflections | Absolute structure: Flack (1983), 1761 Friedel pairs |
252 parameters | Absolute structure parameter: 0.08 (3) |
0 restraints |
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 | ||
Cu1 | 0.26164 (7) | 0.56424 (2) | 0.75389 (2) | 0.03955 (17) | |
C1 | 0.4395 (6) | 0.4324 (2) | 0.8613 (2) | 0.0396 (11) | |
C2 | 0.5248 (7) | 0.4551 (2) | 0.9121 (2) | 0.0496 (13) | |
H2 | 0.5322 | 0.4955 | 0.9165 | 0.059* | |
C3 | 0.5994 (7) | 0.4205 (3) | 0.9567 (2) | 0.0558 (14) | |
H3 | 0.6569 | 0.4370 | 0.9913 | 0.067* | |
C4 | 0.5895 (8) | 0.3611 (3) | 0.9504 (3) | 0.0653 (17) | |
H4 | 0.6401 | 0.3369 | 0.9807 | 0.078* | |
C5 | 0.5071 (9) | 0.3384 (2) | 0.9008 (2) | 0.0534 (12) | |
H5 | 0.5021 | 0.2980 | 0.8964 | 0.064* | |
C6 | 0.4294 (7) | 0.3728 (2) | 0.8558 (2) | 0.0440 (12) | |
C7 | 0.3627 (6) | 0.4715 (2) | 0.8143 (2) | 0.0386 (11) | |
C8 | 0.0179 (5) | 0.60424 (13) | 0.58645 (12) | 0.0411 (11) | |
C9 | 0.0827 (5) | 0.66043 (14) | 0.57885 (14) | 0.0524 (13) | |
H9A | 0.1631 | 0.6751 | 0.6078 | 0.063* | |
C10 | 0.0275 (5) | 0.69465 (12) | 0.52805 (16) | 0.0589 (15) | |
H10A | 0.0709 | 0.7322 | 0.5230 | 0.071* | |
C11 | −0.0925 (5) | 0.67268 (15) | 0.48484 (14) | 0.0617 (16) | |
H11A | −0.1295 | 0.6956 | 0.4509 | 0.074* | |
C12 | −0.1574 (4) | 0.61649 (16) | 0.49245 (15) | 0.0614 (15) | |
H12A | −0.2377 | 0.6018 | 0.4635 | 0.074* | |
C13 | −0.1022 (5) | 0.58227 (12) | 0.54325 (16) | 0.0589 (15) | |
H13A | −0.1456 | 0.5447 | 0.5483 | 0.071* | |
C14 | 0.0822 (6) | 0.5682 (2) | 0.6383 (2) | 0.0423 (11) | |
C15 | 0.0672 (6) | 0.5104 (2) | 0.6359 (2) | 0.0435 (12) | |
H15 | 0.0074 | 0.4954 | 0.6011 | 0.052* | |
C16 | 0.1308 (6) | 0.4698 (2) | 0.6795 (2) | 0.0391 (11) | |
C17 | 0.1033 (7) | 0.4076 (2) | 0.6673 (2) | 0.0476 (12) | |
H17A | 0.0384 | 0.3908 | 0.7017 | 0.071* | |
H17B | 0.2134 | 0.3883 | 0.6638 | 0.071* | |
H17C | 0.0399 | 0.4029 | 0.6282 | 0.071* | |
C18 | 0.3924 (7) | 0.6464 (2) | 0.8448 (2) | 0.0532 (14) | |
H18 | 0.4366 | 0.6128 | 0.8636 | 0.064* | |
C19 | 0.4202 (9) | 0.6974 (3) | 0.8736 (3) | 0.0635 (17) | |
H19 | 0.4847 | 0.6989 | 0.9110 | 0.076* | |
C20 | 0.3560 (11) | 0.7459 (3) | 0.8488 (3) | 0.080 (2) | |
H20 | 0.3752 | 0.7818 | 0.8682 | 0.096* | |
C21 | 0.2630 (12) | 0.7419 (2) | 0.7953 (3) | 0.085 (2) | |
H21 | 0.2139 | 0.7750 | 0.7771 | 0.102* | |
C22 | 0.2413 (9) | 0.6887 (2) | 0.7680 (2) | 0.0658 (17) | |
H22 | 0.1769 | 0.6862 | 0.7307 | 0.079* | |
N1 | 0.2780 (5) | 0.44657 (14) | 0.76881 (16) | 0.0376 (8) | |
N2 | 0.2134 (4) | 0.48748 (16) | 0.72866 (15) | 0.0353 (8) | |
N3 | 0.3066 (5) | 0.64115 (17) | 0.79176 (17) | 0.0400 (9) | |
O1 | 0.3475 (6) | 0.34649 (15) | 0.80904 (17) | 0.0602 (10) | |
H1 | 0.3070 | 0.3710 | 0.7848 | 0.090* | |
O2 | 0.3808 (5) | 0.52533 (13) | 0.82017 (15) | 0.0428 (8) | |
O3 | 0.1558 (5) | 0.59686 (14) | 0.68281 (15) | 0.0499 (9) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cu1 | 0.0412 (3) | 0.0412 (3) | 0.0363 (3) | 0.0042 (3) | −0.0104 (3) | −0.0039 (2) |
C1 | 0.034 (2) | 0.045 (3) | 0.039 (2) | 0.004 (2) | 0.0083 (18) | 0.008 (2) |
C2 | 0.058 (4) | 0.050 (3) | 0.041 (3) | 0.005 (3) | 0.000 (2) | −0.002 (2) |
C3 | 0.059 (4) | 0.066 (4) | 0.043 (3) | 0.008 (3) | −0.006 (2) | 0.007 (2) |
C4 | 0.056 (4) | 0.085 (5) | 0.055 (3) | 0.014 (4) | 0.005 (3) | 0.027 (3) |
C5 | 0.058 (3) | 0.050 (3) | 0.052 (3) | 0.007 (3) | 0.010 (3) | 0.011 (2) |
C6 | 0.050 (3) | 0.041 (3) | 0.041 (3) | 0.006 (2) | 0.014 (2) | −0.003 (2) |
C7 | 0.030 (2) | 0.050 (3) | 0.036 (2) | 0.002 (2) | −0.004 (2) | −0.004 (2) |
C8 | 0.035 (3) | 0.058 (3) | 0.031 (2) | 0.005 (3) | −0.005 (2) | −0.008 (2) |
C9 | 0.060 (3) | 0.056 (3) | 0.041 (3) | 0.003 (3) | −0.004 (2) | −0.005 (2) |
C10 | 0.064 (4) | 0.061 (3) | 0.052 (3) | 0.005 (3) | −0.001 (3) | 0.003 (3) |
C11 | 0.064 (4) | 0.082 (5) | 0.039 (3) | 0.018 (3) | −0.002 (3) | −0.002 (3) |
C12 | 0.058 (3) | 0.075 (4) | 0.051 (3) | 0.007 (3) | −0.018 (3) | 0.007 (3) |
C13 | 0.049 (3) | 0.074 (4) | 0.054 (3) | 0.006 (3) | −0.021 (3) | 0.003 (3) |
C14 | 0.034 (2) | 0.056 (3) | 0.036 (2) | 0.012 (3) | −0.0044 (19) | −0.003 (2) |
C15 | 0.040 (3) | 0.057 (3) | 0.034 (2) | −0.002 (2) | −0.008 (2) | −0.013 (2) |
C16 | 0.032 (2) | 0.042 (3) | 0.043 (2) | −0.002 (2) | 0.007 (2) | −0.009 (2) |
C17 | 0.050 (3) | 0.047 (3) | 0.046 (3) | −0.004 (3) | −0.011 (2) | −0.008 (2) |
C18 | 0.061 (4) | 0.051 (3) | 0.048 (3) | 0.003 (3) | −0.019 (3) | −0.007 (2) |
C19 | 0.084 (4) | 0.049 (3) | 0.057 (3) | 0.007 (3) | −0.026 (3) | −0.006 (3) |
C20 | 0.124 (7) | 0.044 (3) | 0.072 (4) | 0.005 (4) | −0.018 (4) | −0.013 (3) |
C21 | 0.133 (7) | 0.045 (3) | 0.078 (4) | 0.028 (4) | −0.036 (5) | −0.012 (3) |
C22 | 0.097 (5) | 0.053 (3) | 0.048 (3) | 0.014 (4) | −0.028 (4) | 0.002 (2) |
N1 | 0.038 (2) | 0.0335 (19) | 0.0408 (17) | 0.0034 (16) | 0.0008 (17) | 0.0041 (14) |
N2 | 0.0283 (19) | 0.045 (2) | 0.0327 (16) | 0.0030 (16) | 0.0005 (15) | −0.0042 (15) |
N3 | 0.043 (2) | 0.042 (2) | 0.0355 (18) | 0.0042 (18) | −0.0054 (16) | 0.0018 (17) |
O1 | 0.081 (3) | 0.040 (2) | 0.059 (2) | 0.003 (2) | −0.015 (2) | −0.0024 (18) |
O2 | 0.051 (2) | 0.0356 (19) | 0.0417 (17) | 0.0018 (15) | −0.0138 (16) | −0.0037 (14) |
O3 | 0.064 (2) | 0.044 (2) | 0.0417 (17) | 0.0059 (18) | −0.0178 (16) | −0.0048 (16) |
Cu1—O3 | 1.857 (3) | C11—H11A | 0.9300 |
Cu1—N2 | 1.874 (4) | C12—C13 | 1.3900 |
Cu1—O2 | 1.890 (3) | C12—H12A | 0.9300 |
Cu1—N3 | 1.963 (4) | C13—H13A | 0.9300 |
C1—C2 | 1.357 (7) | C14—O3 | 1.276 (5) |
C1—C6 | 1.373 (7) | C14—C15 | 1.328 (7) |
C1—C7 | 1.457 (7) | C15—C16 | 1.394 (7) |
C2—C3 | 1.355 (7) | C15—H15 | 0.9300 |
C2—H2 | 0.9300 | C16—N2 | 1.278 (6) |
C3—C4 | 1.369 (9) | C16—C17 | 1.462 (7) |
C3—H3 | 0.9300 | C17—H17A | 0.9600 |
C4—C5 | 1.327 (8) | C17—H17B | 0.9600 |
C4—H4 | 0.9300 | C17—H17C | 0.9600 |
C5—C6 | 1.367 (7) | C18—N3 | 1.300 (6) |
C5—H5 | 0.9300 | C18—C19 | 1.332 (8) |
C6—O1 | 1.314 (6) | C18—H18 | 0.9300 |
C7—O2 | 1.247 (5) | C19—C20 | 1.323 (8) |
C7—N1 | 1.291 (6) | C19—H19 | 0.9300 |
C8—C9 | 1.3900 | C20—C21 | 1.335 (9) |
C8—C13 | 1.3900 | C20—H20 | 0.9300 |
C8—C14 | 1.453 (5) | C21—C22 | 1.356 (7) |
C9—C10 | 1.3900 | C21—H21 | 0.9300 |
C9—H9A | 0.9300 | C22—N3 | 1.300 (6) |
C10—C11 | 1.3900 | C22—H22 | 0.9300 |
C10—H10A | 0.9300 | N1—N2 | 1.355 (5) |
C11—C12 | 1.3900 | O1—H1 | 0.8200 |
O3—Cu1—N2 | 93.64 (15) | C12—C13—H13A | 120.0 |
O3—Cu1—O2 | 173.85 (15) | C8—C13—H13A | 120.0 |
N2—Cu1—O2 | 82.05 (14) | O3—C14—C15 | 125.4 (4) |
O3—Cu1—N3 | 92.39 (15) | O3—C14—C8 | 114.0 (4) |
N2—Cu1—N3 | 172.50 (15) | C15—C14—C8 | 120.6 (4) |
O2—Cu1—N3 | 92.27 (14) | C14—C15—C16 | 127.5 (4) |
C2—C1—C6 | 118.3 (5) | C14—C15—H15 | 116.2 |
C2—C1—C7 | 119.5 (5) | C16—C15—H15 | 116.2 |
C6—C1—C7 | 122.1 (5) | N2—C16—C15 | 119.6 (4) |
C3—C2—C1 | 121.6 (5) | N2—C16—C17 | 121.5 (4) |
C3—C2—H2 | 119.2 | C15—C16—C17 | 118.9 (4) |
C1—C2—H2 | 119.2 | C16—C17—H17A | 109.5 |
C2—C3—C4 | 119.4 (5) | C16—C17—H17B | 109.5 |
C2—C3—H3 | 120.3 | H17A—C17—H17B | 109.5 |
C4—C3—H3 | 120.3 | C16—C17—H17C | 109.5 |
C5—C4—C3 | 119.5 (5) | H17A—C17—H17C | 109.5 |
C5—C4—H4 | 120.2 | H17B—C17—H17C | 109.5 |
C3—C4—H4 | 120.2 | N3—C18—C19 | 123.4 (5) |
C4—C5—C6 | 121.7 (5) | N3—C18—H18 | 118.3 |
C4—C5—H5 | 119.2 | C19—C18—H18 | 118.3 |
C6—C5—H5 | 119.2 | C20—C19—C18 | 119.9 (6) |
O1—C6—C5 | 117.5 (5) | C20—C19—H19 | 120.0 |
O1—C6—C1 | 123.1 (5) | C18—C19—H19 | 120.0 |
C5—C6—C1 | 119.4 (5) | C19—C20—C21 | 118.3 (6) |
O2—C7—N1 | 124.5 (4) | C19—C20—H20 | 120.9 |
O2—C7—C1 | 119.7 (4) | C21—C20—H20 | 120.9 |
N1—C7—C1 | 115.7 (4) | C20—C21—C22 | 118.9 (6) |
C9—C8—C13 | 120.0 | C20—C21—H21 | 120.6 |
C9—C8—C14 | 119.3 (3) | C22—C21—H21 | 120.6 |
C13—C8—C14 | 120.6 (3) | N3—C22—C21 | 122.9 (5) |
C10—C9—C8 | 120.0 | N3—C22—H22 | 118.5 |
C10—C9—H9A | 120.0 | C21—C22—H22 | 118.5 |
C8—C9—H9A | 120.0 | C7—N1—N2 | 109.9 (4) |
C9—C10—C11 | 120.0 | C16—N2—N1 | 117.8 (4) |
C9—C10—H10A | 120.0 | C16—N2—Cu1 | 128.6 (3) |
C11—C10—H10A | 120.0 | N1—N2—Cu1 | 113.6 (3) |
C12—C11—C10 | 120.0 | C22—N3—C18 | 116.6 (4) |
C12—C11—H11A | 120.0 | C22—N3—Cu1 | 122.0 (3) |
C10—C11—H11A | 120.0 | C18—N3—Cu1 | 121.2 (4) |
C11—C12—C13 | 120.0 | C6—O1—H1 | 109.5 |
C11—C12—H12A | 120.0 | C7—O2—Cu1 | 109.9 (3) |
C13—C12—H12A | 120.0 | C14—O3—Cu1 | 125.2 (3) |
C12—C13—C8 | 120.0 | ||
C6—C1—C2—C3 | 0.2 (8) | N3—C18—C19—C20 | 1.4 (10) |
C7—C1—C2—C3 | −179.5 (5) | C18—C19—C20—C21 | 0.5 (12) |
C1—C2—C3—C4 | 0.2 (9) | C19—C20—C21—C22 | −1.4 (13) |
C2—C3—C4—C5 | 0.1 (9) | C20—C21—C22—N3 | 0.3 (13) |
C3—C4—C5—C6 | −0.9 (10) | O2—C7—N1—N2 | 0.3 (6) |
C4—C5—C6—O1 | −178.5 (5) | C1—C7—N1—N2 | 180.0 (3) |
C4—C5—C6—C1 | 1.3 (9) | C15—C16—N2—N1 | −177.9 (4) |
C2—C1—C6—O1 | 178.9 (5) | C17—C16—N2—N1 | 1.1 (6) |
C7—C1—C6—O1 | −1.5 (8) | C15—C16—N2—Cu1 | 1.6 (6) |
C2—C1—C6—C5 | −1.0 (7) | C17—C16—N2—Cu1 | −179.4 (4) |
C7—C1—C6—C5 | 178.7 (5) | C7—N1—N2—C16 | 177.6 (4) |
C2—C1—C7—O2 | 2.3 (7) | C7—N1—N2—Cu1 | −1.9 (4) |
C6—C1—C7—O2 | −177.4 (5) | O3—Cu1—N2—C16 | −1.8 (4) |
C2—C1—C7—N1 | −177.4 (4) | O2—Cu1—N2—C16 | −177.4 (4) |
C6—C1—C7—N1 | 3.0 (7) | O3—Cu1—N2—N1 | 177.7 (3) |
C13—C8—C9—C10 | 0.0 | O2—Cu1—N2—N1 | 2.1 (3) |
C14—C8—C9—C10 | 177.5 (4) | C21—C22—N3—C18 | 1.5 (10) |
C8—C9—C10—C11 | 0.0 | C21—C22—N3—Cu1 | 176.4 (6) |
C9—C10—C11—C12 | 0.0 | C19—C18—N3—C22 | −2.4 (8) |
C10—C11—C12—C13 | 0.0 | C19—C18—N3—Cu1 | −177.3 (5) |
C11—C12—C13—C8 | 0.0 | O2—Cu1—N3—C22 | −175.0 (5) |
C9—C8—C13—C12 | 0.0 | O3—Cu1—N3—C18 | −176.3 (4) |
C14—C8—C13—C12 | −177.4 (4) | O2—Cu1—N3—C18 | −0.3 (4) |
C9—C8—C14—O3 | 19.2 (5) | N1—C7—O2—Cu1 | 1.4 (6) |
C13—C8—C14—O3 | −163.4 (3) | C1—C7—O2—Cu1 | −178.3 (3) |
C9—C8—C14—C15 | −158.8 (4) | N2—Cu1—O2—C7 | −1.8 (3) |
C13—C8—C14—C15 | 18.7 (6) | N3—Cu1—O2—C7 | 173.3 (4) |
O3—C14—C15—C16 | −1.8 (9) | C15—C14—O3—Cu1 | 1.0 (7) |
C8—C14—C15—C16 | 175.9 (4) | C8—C14—O3—Cu1 | −176.8 (3) |
C14—C15—C16—N2 | 0.4 (8) | N2—Cu1—O3—C14 | 0.5 (4) |
C14—C15—C16—C17 | −178.7 (5) | N3—Cu1—O3—C14 | −175.0 (4) |
Experimental details
Crystal data | |
Chemical formula | [Cu(C17H14N2O3)(C5H5N)] |
Mr | 436.94 |
Crystal system, space group | Orthorhombic, C2221 |
Temperature (K) | 298 |
a, b, c (Å) | 7.7096 (8), 22.906 (2), 20.983 (2) |
V (Å3) | 3705.6 (7) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 1.21 |
Crystal size (mm) | 0.28 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.728, 0.794 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13526, 4034, 3340 |
Rint | 0.050 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.057, 0.131, 1.08 |
No. of reflections | 4034 |
No. of parameters | 252 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.45, −0.56 |
Absolute structure | Flack (1983), 1761 Friedel pairs |
Absolute structure parameter | 0.08 (3) |
Computer programs: APEX2 (Bruker, 2003), SAINT (Bruker, 2003), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Acknowledgements
This work was supported by the Natural Science Foundation of Anhui Provincial Education Commission (No. KJ2009A047Z)
References
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Schiff base metal complexes have been widely studied because they have industrial, antifungal, antibacterial, anticancer and herbicidal applications (Cozzi, 2004). It is well known that N atoms play a key role in the coordination of metals at the active sites of numerous metallobiomolecules (Singh, et al., 2007). They serve as models for biological important species and find applications in biomimetic catalytic reactions. Chelating ligands containing N and O donor atoms show broad biological activity and are of special interest because of the variety of ways in which they are bonded to metal ions. It is known that the existence of metal ions bonded to biologically active compounds may enhance their activities (Canpolat, et al., 2004; Yildiz, et al., 2004). Therefore, it is an important study to design and synthesis of new multidentate ligands cotaining N and O atoms and apply to synthesize complexes.
The asymmetric unit is composed of one mononuclear complex, (Fig.1). The central CuII atom exhibits a distorted square-plannar coordination geometry, defined by two O atoms, one N atom from the ligand molecule and one N atom of the pyridine molecule with Cu—N distances of 1.874 (4) and 1.963 (4) Å while Cu—O distances are 1.857 (3) and 1.890 (3) Å respectively. The Cu—N and Cu—O distances are comparable to those found in other crystallographically characterized CuII complex (Shen, et al. 1997). The crystal structure of the title compound is stabilized by one intramolecular O—H···N interactions with average H···N distances 1.78Å and O—H···N angle 146.3°.