摘要:
Three model metal complexes: Ni(NCS)L, Zn-2(NCS)(2)L-2 and Cd-2(NCS)(2)L-2, consisting of the SCN- anion(s) and L = 2-[(2-dimethylaminoethylimino)-methyl]-phenolate, have been studied by X-ray diffraction and solid state NMR spectroscopy. The metal cations in these complexes have different coordination modes: Ni2+ is almost square-planar, the Zn2+ cation in Zn-2(NCS)(2)L-2 is pentacoordinated, whereas Cd2+ is penta- and hexacoordinated in [Cd-2(NCS)(2)L-2]. The different coordination of the metal cations influences the chemical shifts of the metal cations and also the nitrogen atoms. These chemical shifts can be correlated with the M-N and M-O bond lengths (M = Ni2+, Zn2+, Cd2+). (C) 2011 Elsevier Ltd. All rights reserved.