基于[(Tp)Fe(CN)3]-氰根桥联异金属三核配合物的合成、
晶体结构及磁性
顾金忠;姜隆;鲁统部;谭民裕
【期刊名称】《无机化学学报》 【年(卷),期】2008(024)011
【摘要】Using [(Tp)Fe(CN)3]-(Tp=hydrotris(pyrazolyl)borate) as a building
block,
one
trinuelear
complex
[NiL]
[(Tp)Fe(CN)3]2·4H2O(1)(L=3,10-bis(2-hydroxyethyl)-1,3,5,8,10,12-hexaazacyclotetradecane) was prepared and its structure and magnetic properties were studied. Complex 1 crystallizes in the orthorhombic system (Pbca), which consists of a neutral Ni(Ⅱ)Fe(Ⅲ) complex and four H2O molecules. In the compound 1, the macrocyclic Ni(Ⅱ)is coordinated by two [(Tp)Fe(CN)3]- moieties through cyano-bridges in trans positions, resulting in a linear trinuclear structure. The Ni(Ⅱ) ion adopts a slightly distorted octahedral, with four nitrogen atoms of the macrocyclic ligand L occupying the equatorial plane and two nitrogen atoms of two cyano-bridges situated at the axial sites. Magnetic studies for complex 1 show ferromagnetic coupling between the Ni(Ⅱ) and Fe(Ⅲ) ions, giving a S=2 ground state. The best-fit for XM T vs T with a Hamiltonian H=-2J(Sfel·Sni+SFe2·Sni) leads to the parameters g=2.35, J=8.13 cm-1 for 1.The correlations between the structures and the J values
are
discussed.
CCDC:
675244.%
采用[(Tp)Fe(CN)3]-
基于[(Tp)Fe(CN)3]-氰根桥联异金属三核配合物的合成、晶体结构及磁性
