Synthesis and Characterization of a Tetranuclear [Sm_2Co_2] Heterometallic Compound  

作　　者：杨文博 黄河清 李忠义 刘瑞斌 张建军 

机构地区：[1]Chemistry College,Dalian University of Technology

出　　处：《Chinese Journal of Structural Chemistry》2012年第7期971-976,共6页结构化学（英文）

基　　金：Supported by the NNSFC (21071025, 91122031);Doctoral Fund of Ministry of Education of China (20100041120021);DUT (893127 and 851004)

摘　　要：A new tetranuclear square compound （H3O）[Sm2Co2（CDTA）2（DMF）2 （μ4-O） （H2O）6]ClO4 was synthesized through the assembly reaction of Co2＋ , Sm3＋ and trans-1,2-cclohexylenedinitrilotetraacetic acid （H4CDTA） in aqueous solution. X-ray crystal structural analysis shows that the compound belongs to the monoclinic C2/c space group, with a=27.213（2）, b=10.5574（9）, c=19.4923（17）,β=98.799（1）°, V=5534.1（8）3 , C34H65ClCo2N6O30Sm2 , Mr=1491.93, Dc=1.791g/cm-3 , F（000）=2984,=2.820 mm-1 and Z=4. In the compound, Co2＋ is 7-coordianted while Sm3＋ is 9-coordinated. With the help of a central O2- and 8 carboxylate oxygen atoms, two Co2＋ and two Sm3＋ ions are linked into a square with the side length of 3.45 . Magnetic property was investigated.A new tetranuclear square compound （H3O）[Sm2Co2（CDTA）2（DMF）2 （μ4-O） （H2O）6]ClO4 was synthesized through the assembly reaction of Co2＋ , Sm3＋ and trans-1,2-cclohexylenedinitrilotetraacetic acid （H4CDTA） in aqueous solution. X-ray crystal structural analysis shows that the compound belongs to the monoclinic C2/c space group, with a=27.213（2）, b=10.5574（9）, c=19.4923（17）,β=98.799（1）°, V=5534.1（8）3 , C34H65ClCo2N6O30Sm2 , Mr=1491.93, Dc=1.791g/cm-3 , F（000）=2984,=2.820 mm-1 and Z=4. In the compound, Co2＋ is 7-coordianted while Sm3＋ is 9-coordinated. With the help of a central O2- and 8 carboxylate oxygen atoms, two Co2＋ and two Sm3＋ ions are linked into a square with the side length of 3.45 . Magnetic property was investigated.

关 键 词：cluster compounds crystal structure HETEROMETALLIC 

分 类 号：O621.2[理学—有机化学]