SYNTHESIS AND CRYSTAL STRUCTURES OF {Pr[(C_2H_5O)_2POO]_3}_n

查看全文 作　　者：Chun Hui HUANG~*, Tao YI, Yi LU and Guang Xian XU Research Center of Rare Earth Chemistry, Peking University, Beijing 100871 Hong LING, Zhe Sheng MA China University of Geosciences, Beijing 出　　处：《Chinese Chemical Letters》索引1992年第3卷第11期,共4页 摘　　要：The synthesis, characterization and crystal structure of rare earth coordination complex of {Pr[(C₂H₅O)₂POO]₃}_n has been studied. It is triclinic with space group P1 in a unit cell of dimensions a=11.788(5), b=12.536(3), c=10.262(2.) , α=112.21(2), β=93.01(3), γ=109.94(3)°; V=1290.9(8)³, Z=2. As shown in Fig. 1, each Pr atom is connected with other two Pr atoms through three 'O-P-O' bridging groups to form a long chain polymer. The coordination number of Pr is six. The six coordinated O atoms form an octahedron. The average bond distance of Pr-O is 2.333 A. The complex has been also studied by infrared spectroscopy and thermal analyses. 关 键 词：COORDINATED TRICLINIC BRIDGING connected C₂H₅O OO PR hexyl dimensions RESULTANT