ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 35, Number 1
JKCSEZ 35(1)
February 20, 1991 

Some nickel(Ⅱ) complexes have been derived from the condensation of isonitrosobenzoylacetone and diamine(ethylenediamine and propylenediamine) in the presence of metal ion. It is suggested that an isonitroso group(=N-O) of the ligand coordinates to metal through nitrogen atom to form a five-membered ring while other =N-O coordinates to metal through oxygen atom to form a six-membered ring in Ni(IBN)2-en ((IBA)2-en = N,N'-propylenebis(isonitrosobenzoylacetone imino)). But both isonitroso groups of the ligand coordinate to metal through nitrogen atoms to form five-membered rings in Ni(IBA)2-pn ((IBA)2-pn = N,N'-propylenebis(isonitrosobenzoylacetone imino)).