摘要
在酸性介质、含水溶剂中合成了四元混配化合物[Ln(BA)2(NO3)(phen)]2(BA= 苯甲酸根; Ln= La, Ce, Pr, Nd, Sm , Eu, Dy, Gd, Tb, Er), 用元素分析、IR、DTA-TG等方法对配合物进行了表征. 研究了配合物的顺磁性能和荧光性能. 镨配合物的单晶衍射结果表明, 配合物属三斜晶系, 双核, Pr3+ 的配位数为9, 4 个BA 呈二种配位方式,
New mixed\|ligand complexes of lanthanides [Ln(BA)\-2(NO\-3)(phen)]\-2 (BA=benzoate, phen=1,10\|phenanthroline) have been synthesized in aqueous solution of slight acidity and characterized by elementary analysis, IR and DTA\|TG. Their ESR and fluorescence spectra were studied. The result of the crystal structure of Pr\|complex shows that the complex is triclinic, space group \%P\%1, \%a\%=\{1\^100 7(8)\} nm, \%b\%=\{1\^117 7(3)\} nm, \%c\%=\{1\^068 7(4)\} nm, \%α\%=98\^10(3)°, \%β\%=110\^62(4)°, \%γ\%=84\^80(4)°, \%Z\%=1, \%V\%=1\^217(1) nm\+3, \%D\%\-c=1\^706 \{g/cm\+3\}, \%F\%(000)=620\^00, \%μ\%(Mo \%Kα\%)=20\^47 cm\+\{-1\}. The crystal is consisted of a binuclear molecule. The coordination number of Pr\+\{3+\} is nine. The four BA ligands have two coordination modes: bidentate bridging and tridentate bridging.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第10期1504-1508,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金