摘要
合成了硝酸二(2-乙基己酸)二(乙醇)合钕配合物NdA_2NO_3(C_2H_5OH)_2(A代表2-乙基己酸酸根)。晶体属三斜晶系,P空间群,每一晶胞中有两个化学式单元,晶胞参数:a=9.448(4),b=12.146(4),c=12.974(5),α=71.56(3)°,β=98.45(3)°,γ=98.62(3)°,V=1388.6(9)~3,Z=2。晶体中钕原子之间由两个羧基桥联,形成链状多聚分子。钕的配位数为8,配合物为畸变的三角十二面体构型。
The synthesis, the crystal and molecular structure of neodymium complex NdA2NO3(C2H5OH)2(A= 2-ethyl hexanoate group) are presented in this report. The crystal and molecular structures were determined by single crystal X-ray diffraction techniques with a four circle diffrac-tometer to give a final R value of 0. 0997. The crystal is triclinic with a space group Pl. The unit cell parameters are:a = 9. 448(4) A , b= 12. 146(4) A, c= 12. 974(5) A, a=71. 56(3)°, β = 98.45(3)°, γ=98.62(3)°, V=1388.6(9) A3, Z = 2, dcalc=1. 397 g/cm3. Each two neodymium atoms in crystal are connected with two bridging carboxyl groups to form a chain polymeric molecule. The middle point of the linking line of two neodymium atoms is on the axis a. In addition, every neodymium is coordinated by 4 oxygen atoms. Two of them are from a bidentate nitrate, and the others from two ethyl alcohol molecules. The coordination number of neodymium is 8 and the coordination polyhedron of neodymium takes an arrangement of a distorted delta dodecahedron.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1990年第3期226-230,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
钕配合物
乙基己酸
合成
表征
Neodymium, 2-ethyl hexanoate, Complex, Triclinic crystal system, Space group P1
