Synthesis and complexation of a new branched vic-dioxime

A new vic-dioxime; 1,2-Bis{[di-ten-butyl-4-amino-4-(2-(tert-butoxycarbonyl)ethyl)heptanedioate]-N-yl}glyoxime (H(2)L) has been prepared from di-tert-butyl-4-amino-4-[2-(tert-butoxycarbonyl)-ethyl]heptanedioate (I) and cyanogen-di-N-oxide Transition metal complexes with Ni(II), Pd(II), Cu(II), Co(II) and Pt(II) have been synthesized with a metal-ligand ratio of 1:2. All complexes are very soluble in common organic solvents. H-1 and C-13 NMR, IR, MS and electronic spectrum data are presented. Electrochemical properties of H(2)L and three complexes (Cu, Co and Pt) were investigated by cyclic voltammetry.