四金属簇钨砷夹心型化合物[M_4(H_2O)_2·(AsW_9O_(34))_2]^(10-)(M=Cu~Ⅱ,Co~Ⅱ,Mn~Ⅱ,Ni~Ⅱ,Zn~Ⅱ)的合成、结构和磁特性研究  

Synthesis, Structure and Magnetic Properties of the Sandwich-type Tungstoarsenates Containing Tetrametallic Cluster[M_4(H_2O)_2(AsW_9O_(34))_2]^(10-)(M=Cu~Ⅱ , Co~Ⅱ , Mn~Ⅱ, Ni~Ⅱ, Zn~Ⅱ).

作　　者：毕立华[1] 黄如丹[1] 彭军[1] 王恩波[1] 

机构地区：[1]东北师范大学化学学院

出　　处：《高等学校化学学报》2002年第5期789-791,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:29771006); 吉林省科委应用基础研究基金(批准号:990553)资助.

摘　　要：取代型杂多化合物可改变多酸化合物的酸碱性、氧化还原性和热稳定性,因而受到关注[1]. 夹心型化合物是一类新型化合物,具有大的摩尔质量,高的负电荷,且含有多个磁性中心,近年来已引起国内外的兴趣[2].Abstract The compounds [M4(H2O)2(AsW9O34)2]10-(M = Cu1 , Co1 , Mn1 , Ni1 , Zn1) were synthesized and characterized by IR, UV, elemental analysis and magnetic measurements. These compounds are isostructural to the P derivatives and comprise a rhomb-like M4O16 group encapsulated between two fragments of the trivacant Keggin polyanion [AsW9O34]9-. The crystal structures of the Mn1 and Cu1 derivatives were compared with that of the P derivatives. The Mn1 derivative exhibits antiferromagnetic Mn-Mn exchange interactions and S=0 ground state.

关 键 词：钨砷夹心型化合物 合成 结构 磁特性 杂多化合物 

分 类 号：O641.4[理学—物理化学] O482.5[理学—化学]