Eu（β－NMA）_3PHEN的晶体结构及光谱研究

Crystal Structure and Spectra of Eu(β-NMA)_3(PHEN)

标题化合物Ｍ＝８４５．６９，三斜晶系，空间群，ａ＝１．１７１８（２）ｎｍ，ｂ＝１．５６７０（３）ｎｍ，ｃ＝１．０００２（２）ｎｍ，α＝９９．９７（１）°，β＝９０．１３（１）°，γ＝９８．３６（２）°，Ｖ＝１．７８８９（５）ｎｍ~３，Ｚ＝２，Ｆ（０００）＝８４８，Ｄ_ｘ＝１．５７ｇ·ｃｍ~３，λ（ＭｏＫα）＝０．０７１０６９ｎｍ，μ＝１８．０６ｃｍ^（－１），Ｔ＝２９５Ｋ，Ｒ＝０．０４０．中心Ｅｕ（Ⅲ）离子与周围６个氧和１对氮原子配位，配位多面体属四方反棱柱体，其点对称性为Ｃ_１。

The title compound belongs to triclinic system with a space group,a=1. 1718 (2)nm,b=1.5670(3)nm,c=1.0002(2)nm;α=99.97(1)°,β=90.13(1)°,γ=98.36(2)°,M=845. 68,V= 1. 7889( 5)nm￣3,Z=2,F(000)=848,Dx=1.57g·cm￣(-3),λ(Mo Kα)=0. 071069 nm,μ=18. 06 cm￣(-1),T=295K. The structure was solved by heavy-atom method and refined by full-matrix least squares technique for 54 non-hydrogen atoms and anisotropically for 4961 reflections with I>3σ(I). The final R is 0. 040.Center Eu(Ⅲ)ion is octa-coordinated wiht six oxygen atom of three β-NMA molecules and two nitrogen atoms of PHEN, giving the square antiprism with C_1 site symmetry for the Eu(Ⅲ)ion.