Variety of Crystal Structures of Chiral Schiff Base Lu(III)-Ni(II)/ Cu(II)/Zn(II) and the Related Complexes

Abstract

New mononuclear [Cu 2 (L1) 2 (H 2 O)]2H 2 O CH 3 OH] (cyCu) 2 , multinuclear [Cu 2 (L1) 2 K 2 ][Ni(CN) 4 ] (cy-CuKNi), and dinuclear Ni(L1)Lu(NO 3 ) 3 (cyLuNi), Cu(L1)Lu(NO 3 ) 3 (cyLuCu) and Zn(L1)Lu[(NO 3 ) 2 CH 3 COO]CH 3 OH (cyLuZn) complexes incorporating chiral Schiff base ligands were prepared and characterized by various techniques such as solid-state CD spectra, diffuse reflectance electronic spectra, IR spectra, and single crystal X-ray diffraction analysis. Crystal structures were also compared with previous ones, namely [Cu(L2)](H 2 O) (diCu), Cu(L1)Gd(NO 3 ) 3 (cyGdCu). Interestingly, determined crystal structures exhibited drastically different structural characteristics as regards coordination numbers, crystalline solvents, features and strain condition, nevertheless with little modification in 3d metal substitution and/or modified organic ligands. In this paper, comparison of common components of structures will be discussed systematically.