Synthesis, structural and electrical studies of cobalt-, nickel-, copper and zinc(II) polymeric complexes

Department of Chemistry, Amravati University. Amravati -444 602, India

Department of Chemistry, Nagpur University, Nagpur-440 010. India

Manuscript received 1 September 1998 1 revised 17 April 2000 accepted 23 April 2000

The polymeric complexes of Co^II, Ni^II, Cu^II and Zn^II with Schiff base ligand his(2-hydroxy-5-mcthylalctophcnone)-1,-3-diaminopropane and bis(2-hydroxy-5-chloroacetophenone)-1,3-diaminopropane (H2L¹/H₂L²) have been prepared. The ligands acts as bisbidentate molecule. The kinetic parameters for their decomposition have been evaluated by graphical Freeman-Carroll and Sharp-Wentworth equation from TG data. The values of kinetic and thermodynamic parameter are comparable and that the decomposition follows a common reaction mode. DC electrical conductivity of the chelates has been studied in the temperature range 300-520 K.