Two metal-organic frameworks,[Cd(bib)2(NO3)2] (1) and [Cd(bib)Br2] (2) were synthesized by reactions of ligand 1-bromo-3,5-bis (imidazol-1-ylmethyl)benzene (bib) with corresponding cadmium(Ⅱ) salts,respectively.Their crystal structures were determined by X-ray crystal structure analyses.The results showed that 1 crystallizes in triclinic,space group P1 with a=0.836 18(14) nm,b=0.887 62(15) nm,c=1.165 9(2) nm,α=84.211(3)°,β=74.321(3)°,γ=69.805(3)°,V=0.781 9(2) nm3,Z=1,Dc=1.849 g·cm-3,F(000)=430,μ=3.314 cm-1,R=0.032 7,wR=0.085 0;while complex 2 crystallizes in monoclinic,space group P21/c with a=0.741 86(9) nm,b=1.423 77(18) nm,c=1.596 0(2) nm,β=94.729(2)°,V=1.680 0(4) nm3,Z=4,Dc=2.330 g·cm-3,F(000)=1112,μ=8.435 cm-1,R=0.030 1,wR=0.0667.Complex 1 has a 1D chain structure,which is further connected by Br…π interactions to generate a 2D network.In the case of complex 2,2D sheet structure was further linked by Br…Br interactions leading to the formation of a 3D framework.CCDC:715302,1;715303,2.%利用双齿含氮有机配体1-溴-3,5-二(1-咪唑基-亚甲基)苯(bib)与不同的镉盐反应合成了2个配合物[Cd(bib)2(NO3)2](1)和[Cd(bib)Br2](2).利用元素分析及X-射线衍射单晶结构分析对其进行了表征.晶体结构表明标题化合物1晶体属于三斜晶系,P1空间群.化合物2晶体属于单斜晶系,P21/c空间群.在化合物1中,一维链状结构通过Br…π相互作用连接成为二维网状结构:而化合物2的二维结构通过卤素…卤素相互作用形成一个三维结构.
展开▼
