Di-2-pyridylketone semicarbazone as ligand in metal complexes: synthesis and X-ray crystal structure
作者:Luigi P. Battaglia、Pier Giovanni Berzolla、Anna Bonamartini Corradi、Corrado Pelizzi
DOI:10.1007/bf01185546
日期:1993.12
A series of complexes of di-2-pyridylketone semicarbazone (Hdips) and Mn(ZI), Co(III), Co(m), Ni(II)) and Cu(II) nitrates were synthesized and characterized by means of IR spectroscopy and for cobalt and nickel by X-ray crystal structures. The results are in agreement with the formulae: Mn(Hdips)(2)(NO3)(2).2H(2)O, [Co(Hdips)(2)](NO3)(2).H2O (I), [Ni(Hdips)(2)](NO3)(2).H2O Cu(Hdips)(NO3)(2).2H(2)O, [Co(dips)(2)](NO3).2H(2)O (m). The structure of I and II are monoclinic, space group P2(I)/c, with, I, a=15.980(4), b=11.531(2), c=16.170(2)Angstrom; beta=104.20(2)degrees, Z=4, R=0.032; II, a=16.109(5), b=11.480(3), c=16.135(6)Angstrom; beta=104.15(2)degrees, Z=4, R=0.069. Compound III is also monoclinic, space group P2(I)/c with a=12.173(5), b=15.619(5), c=15.338(8)Angstrom; beta=111.40(4)degrees, Z=4, R=0.059. In these complexes the ligand is tridentate via carbonylic oxygen, semicarbazone and pyridine nitrogens forming each two five membered chelate rings with the metal in a distorted octahedral geometry.