Synthesis, spectral, electrochemical and catalytic properties of Cu(II), Ni(II) and Co(II) complexes containing N, O donors

✍ Scribed by K. Kanmani Raja; D. Easwaramoorthy; S. Kutti Rani; J. Rajesh; Y. Jorapur; S. Thambidurai; PR. Athappan; G. Rajagopal

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 377 KB
• Volume: 303
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/j.molcata.2008.12.021

✦ Synopsis

Metal(II) chelates of Schiff bases derived from the condensation of multi-substituted aniline with monoand di-substituted salicylaldehyde have been prepared and characterized by 1 H NMR, IR, electronic, EPR, magnetic and cyclic voltammetry measurements. The complexes are of the type M

The Schiff bases behave as monobasic bidentate ligand in their complexes. The spectral data indicate that the ligand coordinates through the phenolic oxygen and the azomethine nitrogen atoms. The observed A || values in the Cu(II) complexes indicate a tetrahedrally distorted square planar structure. The cyclic voltammetric redox potential of copper(II) and nickel(II) complexes suggest the existence of irreversible pairs in acetonitrile. Cu(Br-DPMP) 2 was found to be an efficient catalyst for cyanosilylation of aldehydes under mild conditions.