缬氨酸锑和缬氨酸铋配合物的制备与结构分析

Preparation and Structure Analysis of Antimony Trichloride and Bismuth Trichloride Comlexes with Valine

摘要:

采用室温固相合成法合成了缬氨酸与三氯化锑、三氯化铋的两种生物配合物,其组成为Sb(C5H10O2N)3·2H2O, Bi(C5H10O2N)2Cl·0.5H2O.缬氨酸锑配合物的晶体结构属于三斜晶系,晶胞参数为a=0.959 9 nm,b=1.506 8 nm,c=1.985 1 nm,α=92.27°,β=95.05°,γ=104.27°;缬氨酸铋配合物的晶体结构属于单斜晶系,晶胞参数为a=1.601 2 nm,b=1.894 1 nm,c=1.839 nm,β=99.73°.远红外、红外光谱表明这两种新的配合物中锑、铋与缬氨酸的成键情况;并用差热-热重法对这两种配合物做了热分析,进一步验证了配合物的组成.

Abstract:

Two compounds of antimony trichloride and bismuth trichloride with valine are synthesized by solid phase synthesis at room temperature. Their compositions, determined by element analysis, are Sb(C5H10O2N)3·2H2O and Bi(C5H10O2N)2Cl·0.5H2O . The crystal structure of antimony complex with valine belongs to triclinic system and its lattice parameters are: a= 0.959 9 nm,b=1.506 8 nm, c=1.985 1 nm,α=92.27°,β=95.05°,γ=104.27°. The crystal structure of bismuth complex with valine belongs to monoclinic system and its lattice parameters are: a=1.601 2 nm, b=1.894 1 nm, c=1.839 nm,β=99.73°. The far-infrared spectra and the infrared spectra show that the amino group and carboxyl of valine may be coordinated to antimony and bismuth, respectively, in two compounds. The TG-DSC results also reveal that the complexes are formed.