N-Phthaloyglycinate ternary complexes with cobalt(II), nickel(II), copper(II), zinc(II) and cadmium(II) metal ions and aromatic mono, bi and tridentate amines

摘要

Complexes of N-phthaloylglycinate (N-phthgly) and Co~(II), Ni~(II), Cu~(II), Zn~(II) and Cd~(II) containing imidazole (imi), N-methylimidazole (mimi), 2,2'-bipyridyl (bipy) and 1,10-phenanthroline (phen), and tridentate amines such as 2,2',2''-terpyridine (terpy) and 2,4,6-(2-pyridyl)s-triazine (tptz), were prepared and characterized by conventional methods, i.r. spectra and by thermogravimetric analysis. For imi and mimi ternary complexes, the general formula [M(mim/mimi)_2(N-phthgly)_2]·nH_2O, where M = Co~(II), Ni~(II), Cu~(II) and Zn~(II) applies. For Cd~(II) ternary complexes with imi, [Cd(imi)_3(N-phthgly)_2]·nH_2O applies. For the bi and tridentate ligands, ternary complexes of the formula [M(L)(N-phthgly)_2]·nH_2O were obtained, where M = Co~(II), Ni~(II), Cu~(II) and Zn~(II); L = bipy, phen, tptz and terpy. In all complexes, N-phthgly acts as a monodentate ligand, coordinating metal ions through the carboxylate oxygen, except for the ternary complexes of Co~(II), Ni~(II) and Cu~(II) with mimi and Cu~(II) with mimi and Cu~(II) and Zn~(II) with imi, where the N-phthgly acts as a bidentate ligand, coordianting the metal ions through both carboxylate oxygen atoms.