Department of Chemistry, The University of Burdwan, Burdwan-713 104, West Bengal, India E-mail : alakghosh2002@yahoo.co.in Department of Chemistry, National Institute of Technology, Durgapur-713 209, West Bengal, India Manuscript received 09 April 2010, revised 05 October 2010, accepted 28 October 2010 The kinetics of interaction between DL-penicillamlne and the title complex is a two-step process in which the first step is ligand dependent, but the second step is ligand independent and is assigned to ring closure. The rate and activation parameters, conductivity studies, IR data were used to deduce a plausible mechanism.