摘要
A trinudear Mn（II） coordination complex Mna （HEDTA）2-10H20 （EDTA=ethylene diamine tetraacetic acid） 1 has been synthesized and characterized by X-ray crystal structure determination. In addition, IR spectrum, thermogravimetric analysis, electron paramagnetic resonance （EPR） spectra and magnetic susceptibility of this complex are discussed. X-ray determination indicates that six- and seven-coordinate modes between Mn（Yl） and H4EDTA exist alternately in 1. Furthermore, detailed discussion of magnetic ordering in tile temperature range of 2-300 K reveals the antiferromagnetic interactions in the complex.
A trinuclear Mn(Ⅱ)coordination complex Mn_3(HEDTA)_2·10H_2O(EDTA=ethylene diamine tetraacetic acid)1 has been synthesized and characterized by X-ray crystal structure determination.In addition,IR spectrum,thermogravimetric analysis,electron paramagnetic resonance(EPR)spectra and magnetic susceptibility of this complex are discussed.X-ray determination indicates that six-and seven-coordinate modes between Mn(Ⅱ)and H_4EDTA exist alternately in 1.Furthermore, detailed discussion of magnetic ordering in the temperature range of 2～300 K reveals the antiferromagnetic interactions in the complex.
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.20490210,10574047)
the Doctor Foundation of China(Grant No.20030487003)
