六钨酸盐为模板的三维网状超分子化合物[La_2(DNBA)_4(DMF)_8][W_6O_(19)]的合成和晶体结构(英文)  

Synthesis and Structure of a Hexatungstate-Templated 3D Supramolecular Network [La_2(DNBA)_4(DMF)_8][W_6O_(19)]

作　　者：王秀丽[1] 毕研峰[1] 刘国成[1] 林宏艳[1] 

机构地区：[1]渤海大学化学化工学院,锦州121000

出　　处：《无机化学学报》2006年第5期957-962,共6页Chinese Journal of Inorganic Chemistry

基　　金：辽宁省自然科学基金(No.20032138);中国博士后科学基金(No.200435144)资助

摘　　要：A new three-dimensional (3D) lanthanide-aromatic monocarboxylate dimer supramolecular network [La2(DNBA)4(DMF)8][W6O19] (DNBA=3,5-dinitrobenzoate, DMF=dimethylfomamide) was synthesized using hexatungstate anion (W6O192-) as template. The crystal structure of the title compound has been determined by single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a=1.334 54(18) nm, b=1.387 52(19) nm, c=1.426 06(19) nm, α=102.189(2)°, β=101.023(2)°, γ=116.349(2)°, V=2.187 2(5) nm3, Dc=2.364 g·cm-3, Z=1, F(000)=1 453.40. The single crystal structure reveals that two La髥 ions are bridged by four 3,5-dinitrobenzoate anions as asymmetrically bridging ligands, leading to dimeric cores, [La2(DNBA)4(DMF)8]2+; [La2(DNBA)4(DMF)8]2+ groups are joined together by π-π stacking interaction between the aromatic groups to form a two-dimensional grid-like network; the 2D supramolecular layers are further extended into 3D supramolecular network with a 1D box-like channels by hydrogen bonding interactions, in which hexatungstate polyanions reside. CCDC: 284694.A new three-dimensional （3D） lanthanide-aromatic monocarboxylate dimer supramolecular network [La2（DNBA）4（DMF）8][W6O19] （DNBA=3,5-dinitrobenzoate, DMF=dimethylfomamide） was synthesized using hexatungstate anion （W6O19^2-） as template. The crystal structure of the title compound has been determined by singlecrystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a=1.334 54（18） nm, b=1.387 52（19） nm, c=1.426 06（19） nm, α=102.189（2）°,β=101.023（2）°, γ=116.349（2）°, V=2.187 2（5） nm^3, Dc=2.364 g·cm^-3, Z=1, F（000）=1 453.40. The single crystal structure reveals that two La（Ⅲ） ions are bridged by four 3,5-dinitrobenzoate anions as asymmetrically bridging ligands, leading to dimeric cores, [La2（DNBA）4（DMF）8]^2＋; [La2（DNBA）4（DMF）8]^2＋ groups are joined together by π-π stacking interaction between the aromatic groups to form a two-dimensional grid-like network; the 2D supramolecular layers are further extended into 3D supramolecular network with a 1D box-like channels by hydrogen bonding interactions, in which hexatungstate polyanions reside. CCDC： 284694.

关 键 词：六钨酸盐 模板 三维网状超分子 晶体结构 

分 类 号：O614.613[理学—无机化学]