Synthesis, structure and properties of two bimetallic compounds [Co(bpy)2 (NiL)] (ClO4)2 and {[Co(phen)3](NiL)}(ClO4)2 containing a macrocyclic oxamide ligand

Abstract

Two compounds, [Co(bpy) 2 (NiL)](ClO 4 ) 2 (1) and {[Co(phen) 3 ](NiL)}(ClO 4 ) 2 (2), have been synthesized: (H 2 L ¼ 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacylotetradeca-7,12-diene, bpy ¼ 2,2¢-bypyridine and phen ¼ 1,10-phenanthroline). Compound (1) contains a discrete binuclear [Co(bpy) 2 (NiL)] 2+ cation, while compound (2) is composed of [Co(phen) 3 ] 2+ cations and NiL neutral fragments. The magnetic properties of compound (1) have been dealt with by isotropic one-ion approximation of the Co II ion with a spin-orbit coupling in an O h symmetry environment. The electronic spectra of these two compounds have also been discussed.

Synthesis and multi‐spectroscopic study on DNA‐binding, cleavage and biological properties of M(II) complexes based on N2O2 donor Schiff base ligand

“…Transition metal complexes of amino acids are significant due to their biological importance and their ability to function as model systems in the study of molecular structures and metal–metal interactions of metalloproteins . Methionine is a special type of amino acid because of its coordination behavior with diverse metal ions .…”

Synthesis, crystal structure and thermal analysis of two transition metal coordination compounds based on flexible 2-nitro-benzene-1,4-dioxyacetic acid (NBDOA)

“…The metal chelating property aspects of 1,10-phenanthroline have been widely utilized in all aspects of coordination chemistry [40][41][42][43][44][45]. Great interest has focused on Co(II) coordination compounds based on phenanthroline.…”