Synthesis，Crystal　Structure　and　Infrared　Spectrum　of　Lanthanum　Dinuclear　Coordination　Compound　with　Alanine：〔La₂（ala）₄（H₂O）₈〕·（ClO₄）₆

作     者：Ma Ai-Zeng(马爱增) Li Lai-Ming(李来明) Lin Yong-Hua(林永华) Xi Shi-Quan(席时权) 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：1995年第6期

页      面：5-10页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

主　　题：rare earth amino acid Ianthanum complex crystal structure IR spectrum. 

摘      要：Lanthanum coordination compound with l-alanine[La2（ala）4（H2O）8]·（ClO4）6（ala=l-alanine） was synthesized by reaction of lanthanum perchlorate with l-alanine in aqueous solution and obtained in the form of single *** X-ray crystal structure has been determined and the IR spectrum has been *** title compound Cl6La2C12H44O40N4,Mr=1375.2,crystallizes in the triclinic,space group P1 , with parameters: a= 11.227（3）,b=11.445（2）,c=11.014（3）,α=114.46（2）,β=114.51（2）,γ=78.62（2）°,V=1171.73,Z=1,Dc=1.95 g/cm￣3,F（000）=680,μ=22.9 cm￣-1（MoKα）.The final R=0.050,Rω=*** the crystal,two lanthanum ions are coordinated by four alanine molecules via four carboxylate bridges to form a dinuclear coordination *** water molecules are coordinated to each lanthanum ion. There is a symmetric centre between the two lanthanum *** IR spectrum of the coordination compound and the relationship between the IR spectrum and the structure have been *** mechanism of the configuration inversion of alanine has been proposed.