Synthesis, Thermogravimetric and Spectroscopic Characterizations of New Tetraazamacrocyclic Schiff Base Ligand and Some Metal Complexes

Abstract

     In the present study, metal complexes of Mn(II), Ni(II), Co(II), Cu(II) and Hg(II) were synthesized using new Tetraazamacrocyclic Schiff Base (5E,8E,14E,17E)-6,8,15,17-tetramethyl-1,2,3,4,4a,7,9a,10,11,12,13,13a,16,18a-tetradecahydrodibenzo [b,i][1,4,8,11]tetraazacyclotetradecine (L) derived from 1,2-diamino cyclo hexane with the acetyl acetone.  Compounds  have been exanimated and confirmed by fourier-transform infrared (FT-IR), ultraviolet-visible (UV-visible), proton nuclear magnetic resonance (¹HNMR), carbon nuclear magnetic resonance (¹³CNMR), microelemental analyses (CHN), thermal analysis (TG), conductivity and magnetic susceptibility. The propose geometry for all complexes [MLCl₂] structures were octahedral. Thermogravimetric of cobalt complex was carried out in two steps by fission into several small aggregates.