4, 4′-二羧基二苯基砜的镧系配合物的合成和结构  

Synthesis and Structure of Lanthanide Complexes with 4,4'-dicarboxybiphenyl Sulfone

作　　者：庄文娟[1] 郑向军[1] 孙豪岭[1] 金林培[1] 

机构地区：[1]北京师范大学化学院,北京100875

出　　处：《无机化学学报》2008年第8期1305-1310,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目(No.0331010;20501003)

摘　　要：合成了V型半刚性配体4,4′-二羧基二苯基砜的3个新的镧系配合物[Nd2(dbsf)3(DMF)2.25(H2O)1.75]·1.25DMF·0.5MeOH(1),[Yb2(dbsf)3(H2O)2]·1.5H2O(2)和[Er2(dbsf)3(H2O)2]·0.75H2O(3)(H2dbsf=4,4′-二羧基二苯基砜,DMF=N,N-二甲基甲酰胺,MeOH=甲醇),并测定了它们的晶体结构。结构表明配合物1具有一维孔道的三维镧系金属-有机骨架结构(LnOF),未配位的DMF和MeOH填充在孔道中;配合物2和3也具有三维的LnOF结构,但晶格水存在于洞穴里。它们的形成与结构特征可能与半刚性V型配体H2dbsf和镧系收缩效应有关。Three new lanthanide complexes with semi-rigid V-shape 4,4＇-dicarboxybiphenyl sulfone, [Ndffdbsf）3 （DMF）225 （H20）1.75] · 1.25DMF ·0.5MeOH （1）, [Yb2 （dbsf）3 （H2O）2] ·1.5H20 （2） and [Er2 （dbsf）3 （H20）2]·0.75H20 （3） （H2dbsf=4,4＇-dicarboxybiphenyl sulfone, DMF=N,N-dimethyl formamide, MeOH=methanol） were synthesized and characterized by X-ray diffraction single-crystal structural analysis. The crystal structures show that complex 1 is composed of 3D lanthanide-organic framework （LnOF） with 1D channels, in which uncoordinated DMF and MeOH molecules are filled; while the complexes 2 and 3 have 3D LnOFs with cavities, in which lattice water molecules are located. Their formation and structural characteristics are possibly due to the semi-rigid V-shape ligand H2dbsf and lanthanide contraction effect. CCDC： 683617, 1; 683618, 2; 683619, 3.

关 键 词：镧系配合物:V型配体:晶体结构 

分 类 号：O614.33[理学—无机化学] O614.346[理学—化学]