期刊
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY
卷 29, 期 11, 页码 795-804出版社
MAIK NAUKA/INTERPERIODICA
DOI: 10.1023/B:RUCO.0000003437.79753.d6
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Nickel(II) and cobalt(II) complexes with optically active diaminodioxime (H2L, the derivative of 3-carene) of the compositions [Ni(H2L)NO3]NO3 (1), Ni(H2L)Cl-2 (II), [Ni(HL)]ClO4 (.) H2O (III), and Co(H2L)Cl-2 (IV), were synthesized. According to X-ray diffraction data, the structures of the paramagnetic compound I and diamagnetic complex III are ionic. In the cation of I, the distorted NiN4O2 octahedron is formed by the N atoms of the tetradentate cyclic ligand (H,L molecule) and by the O atoms of NO3- anion functioning as bidentate cyclic ligands. In the cation of III, the NiN4 coordination unit is a distorted square formed upon coordination of the tetradentate cyclic ligand, HL- anion. The data of magnetochemistry and UV-Vis, IR, and Raman spectroscopy suggest that paramagnetic complexes H and IV contain a distorted octahedral polyhedron MCl2N4 (M = Ni, Co).
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