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Journal of Coordination Chemistry Volume 64, 2011 - Issue 5
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Original Articles

Structural, spectroscopic, and biological studies of N,O donor Schiff base copper(II) complexes

R.N. Patel Department of Chemistry, A.P.S. University, Rewa 486003, Madhya Pradesh, IndiaCorrespondence[email protected]
,
Anurag Singh Department of Chemistry, A.P.S. University, Rewa 486003, Madhya Pradesh, India
,
K.K. Shukla Department of Chemistry, A.P.S. University, Rewa 486003, Madhya Pradesh, India
,
Dinesh K. Patel Department of Chemistry, A.P.S. University, Rewa 486003, Madhya Pradesh, India
&
V.P. Sondhiya Department of Chemistry, A.P.S. University, Rewa 486003, Madhya Pradesh, India
Pages 902-919 | Received 18 Aug 2010, Accepted 13 Dec 2010, Published online: 25 Feb 2011
 
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Abstract

The Schiff bases (L1 and L2) and their complexes [Cu(L)2] (L1 = N-[(1)-1-(4-methylphenyl)ethylidene]benzolhydrazide and L2 = N-[(1)-1-(2-methoxyphenyl)ethylidene]benzolhydrazide) have been prepared and characterized by elemental analysis, magnetic, and conductivity measurements. Crystal structure of the two complexes determined by single crystal X-ray analysis shows distorted square planar CuN2O2 coordination. Electron paramagnetic resonance spectra of these complexes in frozen DMSO show a signal at g ca 2. The trend in g-value (g ‖ > g ⊥ > 2.0023) suggests that the unpaired electron on copper(II) has character. The superoxide dismutase and biological (antimicrobial) activities of these complexes have also been screened.

Acknowledgments

Our sincere thanks are due to the National Diffraction Facility, X-ray Division, and RSIC (SAIF), IIT Mumbai for single crystal data collection and EPR measurements, respectively. The Head RSIC (SAIF), Central Drug Research Institute, Lucknow is also thankfully acknowledged for providing analytical and spectral facilities. Financial assistance from UGC [Scheme no. 36-28/2008 (SR)] and DRDO [Scheme no. ERIP/Er/0603574/M/01/1118] Delhi are also thankfully acknowledged.

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