一个层状铅膦酸盐化合物的合成及晶体结构研究

Synthesis,crystal structure of a lead phosphonate with layered structure

通过水热法合成了一个新化合物,Pb3(HL)2.2H2O1,(H4L=C6H11N(CH2PO3H2)2)。通过X射线单晶衍射仪测定其晶体结构。并对其进行了元素分析,红外光谱以及热重等性质测定。晶体结构研究结果表明,这个化合物属单斜晶系,空间群为C2/c,a=38.4018(8),b=7.4197(3),c=10.1180(4),β=100.610(2)°,Z=4,V=2833.63(17)3,最终偏差因子R1=0.0779,wR2=0.1452(对I>2(σI)的衍射点)和R1=0.1308,wR2=0.1752(对所有衍射点)。化合物中,铅通过桥连二膦酸配体形成一个<200>有机无机杂化层,层与层之间通过范德华力相连形成超分子结构。

A new lead(II) phosphonate,namely,Pb3(HL)2·2H2O 1,(H4L=C6H11N(CH2PO3H2)2) has been hydrothermally synthesized and characterized by X-ray single-crystal,elemental analyses,IR and TGA.It crystallizes in monoclinic,space group C2/c,a = 38.4018(8),b = 7.4197(3),c=10.1180(4),β=100.610(2)°,Z=4,V=2833.63(17)3,the final R1=0.0779,wR2=0.1452(for I>2σ(I)) and R1=0.1308,wR2=0.1752(for all data).The cross-linkage of Lead ions by bridging diphosphonate ligands resulted in a <200> organic-inorganic hybrid layer.Such layers are further interlinked by van der waals force into supermolecular structure.