摘要
采用高温固相反应和化学气相传输法合成三硒化二铒。晶体属于四方晶系,M_r=571.40,空间群为P4/nmm,a=3.984(1),c=8.228(3),V=130.59(7),Z=1,D_c=7,27g/cm ̄3,F(000)=238,μ(MoKα)=528.86cm ̄(-1),对于187个I≥3σ(I)的独立衍射点,最后偏离因子R=0.066,R_w=0.078。化合物Er_2Se_3的晶体结构是由Er配位多面体的双层状结构通过共用Se(2)原子,沿c轴方向堆积而形成的三维结构。
Erbium Sesquiselenide Er_2Se_3 was prepared by solid state reaction.It crystallizes in the tetragonal space group P4/nmm with a= 3. 984(1) , c=8. 228(3) ,V=130. 59(7), Z=1 ,D_c= 7. 27 g/cm ̄3 , F(000) =238,P(MoKα) = 528. 86 cm ̄(-1) , the final R=0. 066 , R_w = 0. 078for 187 independent reflections with I≥3σ(I). The structure of Er_2Se_3 is built from stacking the double layers of Er polyhedron through the Se(2) atoms along the c direction.
基金
国家自然科学基金
结构化学国家重点实验室资助
福建省自然科学基金
关键词
三硒化二饵
晶体结构
合成
erbium sesquiselenide,crystal structure