一个新的双核双(μ-氧桥)锰(Ⅲ/Ⅳ)配合物的合成、结构和性质(英文)

Synthesis, Structure and Properties of a New Dinuclear Bis(μ-oxo) Manganese(Ⅲ/Ⅳ ) Complex

二价锰盐和1,4,8,11-环十四四氮烷(cyclam)在溶液中自组装生成双核双(μ-氧桥)锰(Ⅲ/Ⅳ)配合物:犤(cyclam)MnO犦2(ClO4)2(NO3)。该配合物被晶体结构表征,低温EPR表明其具有16条Mn?/Mn?二聚体的特征信号。磁性研究确认有强的反铁磁性,J/k=-680K,g=2.0。

The dinuclear bis(μ oxo)manganese(Ⅲ,Ⅳ) complex,[(cyclam)MnO]2(ClO4)2(NO3) (cyclam=1,4,8,11 tetraazacyclotetradecane), was self assembled by the reaction of Mn2+ with 1,4,8,11 tetraazacyclotetradecane in aqueous medium. This compound was structurally characterized and the typical 16 line signal for a bis(μ oxo) Mn?/Mn? dimer was observed in the low temperature EPR spectra. The magnetic susceptibility studies suggest that the compound is strong antiferromagnetic with J/k=-680K for g=2.0.