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)225(H2O)1.75】·1.25DMF·0.5MeOH(1),[Yb2(absf)3(H2O)2].1.SH20(2)和【Er2(dbsf)3(H20)21.0.75H20(3)(H:,dbsf=4,4’一二羧基二苯基砜,DMF=N,N-二甲基甲酰胺,MeOH=醇1-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一有机骨架结构(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,但品格水存在于洞穴里。它们的形成与结构特征可能与半刚性V型配体H2bsf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.