Bulletin of the Chemical Society of Ethiopia

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Synthesis and spectral studies of some lanthanide(III) complexes with 4-[N-(p-dimethylaminobenzalidene)amino] antipyrine semicarbazone

Ram K. Agarwal, Himanshu Agarwal, Neetu Goel, S.K. Sindhu


In the present work, we describe the isolation of some lanthanide(III) complexes of 4-[N-(p-dimethylaminobenzalidene)amino]antipyrine semicarbazone (DABAAPS) with general composition [Ln(DABAAPS)2X3] (Ln = La, Pr, Nd, Sm, Gd, Tb, Dy or Ho and X = Cl- and NCS-). All the isolated compounds were characterized through various physico-chemical studies. The coordinating ligand DABAAPS behave as tridentate N,N,O-donors. The central metal ion displays the coordination number nine in these complexes. Thermal stabilities of these complexes were also studied through thermogravimetric analysis.

(Received January 15, 2001; revised May 10, 2001)

(Bulletin of The Chemical Society of Ethiopia: 2003 15 (1): 79-84)
AJOL African Journals Online