Syntheses, Crystal Structures and Different Magnetic Behaviors of Three Cyanide-bridged Fe^(Ⅱ)-M^(Ⅱ)(M = Fe, Co and Mn) Complexes  

作　　者：HUANG Ying-Ying XU Qing-Dou HU Sheng-Min WU Xin-Tao SHENG Tian-Lu 黄莹莹;许庆斗;胡胜民;吴新涛;盛天录(College of Chemistry,Fuzhou University,Fuzhou 350002,China;State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]College of Chemistry,Fuzhou University,Fuzhou 350002,China [2]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Journal of Structural Chemistry》2021年第9期1161-1168,1109,共9页结构化学（英文）

基　　金：the National Natural Science Foundation of China(21773243,21973095);the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB20010200)。

摘　　要：Three dinuclear cyanide-bridged complexes[Fe^(Ⅱ)(PY_(5)OMe_(2))CNM^(Ⅱ)(PY_(5)OMe_(2))](OTf)_(3) (M=Fe1,M=Co 2,M=Mn 3)(PY_(5)OMe_(2)=2,6-bis-((2-pyridyl)methoxymethane)pyridine OTf=CF_(3)SO_(3)^(-)) have been synthesized and characterized.Single-crystal diffraction analyses show these three dinuclear compounds are very similar in structure.The measured ν(CN) results for compounds 1~3 suggest that Mn^(2+) is electron-poorer than Fe^(2+) and Co^(2+).Meanwhile,the temperature dependence of magnetic susceptibilities of complexes 1~3 reveals that in these three complexes,all the cyanide-carbon coordinated Fe(Ⅱ) is low-spin,and Co(Ⅱ) for 2 and Mn(Ⅱ) for 3are both in a high-spin state through 2~400 K but the cyanide-nitrogen coordinated Fe(Ⅱ) for complex 1 exhibits spin crossover (SCO) behavior over 300 K and a hysteresis of 36 K in both cooling and heating modes.

关 键 词：CYANIDE-BRIDGED magnetic property spin crossover 

分 类 号：O641.4[理学—物理化学]