Synthesis and Characterization of a Tetranuclear [Sm_2Co_2] Heterometallic Compound

• 作者: HUANG He-Qing LI Zhong-Yi LIU Rui-Bin YANG Wen-Bo ZHANG Jian-Jun
• 来源期刊: 结构化学
• 学科: 化学
• 关键词: 金属化合物 表征 合成 晶体结构分析 二氧化碳 单斜晶系 X-射线 磁学性质
• 年，卷（期）: 2012,（7）
• 页码范围: 971-976
• 页数: 6页
• 分类号: O614|O484.1
• 语种: 英文

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.