Studies on some Divalent Metal Complexes of 2,3-Substituted-benzofuran Derivatives

Department of Chemistry, Gulbarga University, Gull:large-585 106
Manuscript recesved 5 October 1989, revssed 1 April 1987, accepted 5 June 1987

The complexes of Co^II, NI^II, Cu^ll, Zn^II, Cd^II and Hg^II with 3-amino-2-benzo­furancarbonitrile (L) and 3-amino-2-benzofuranthiocarboxamide (L') have been prepared and characterised on the basis of elemental analyses, molar conductance, magnetic moment, electronic and infrared spectral data. The various ligand field parameters like Dq, B', LFSE etc. have been evaluated for Co^II, Ni^II and Cu^II complexes which suggest an octahedral geometry for each of them. Infrared spectral data indicate a polymeric distorted octahedral structure for Zn^II, Cd^II and Hg^II complexes with the exception for H^II complex of the latter ligand which may have a tetrahedral geometry.