Strukturne transformacije u kompleksima kobalta, nikla i bakra s odabranim α-aminokiselinama i njihovim derivatima

Reactions of cobalt(II), nickel(II), and copper(II) salts with glycinamide (HGlyam), D-allo- and L-isoleucine, and L-homoserine were investigated and 17 bis(bidentate) and one tris(bidentate) coordination compounds were prepared and structurally characterized. Cis-trans isomerization of bis(bidentate) compounds in solution and solid-state was studied. The role of a metal ion in the crystallization of a certain isomer was determined, however, in some cases the key factor was anion, solvent, atmosphere, temperature, or pH of the solution. In addition, temperature dependent reversible polymorphic transition, with self-healing property of cis-[Ni(H2O)2(HGlyam)2]I2 crystals was studied. In reactions involving 2,2'-iminodiacetamide 7 new bis(tridentate) coordination compounds with cobalt(II) and nickel(II) were prepared and structurally characterized. Moreover, 22 ternary coordination compounds of copper(II) with α-amino acids (glycine, L-serine, L-homoserine) and heterocyclic bases (2,2'-bipyridine and 1,10-phenanthroline) were synthesized and structurally characterized. For some compounds, the mechanism of interconversion of different solvatomorphs in the solid-state was successfully determined, which is the first such study on this group of compounds.