二(环戊二烯基)(双烯酮亚胺基)镱配合物的合成和晶体结构

Synthesis and crystal structure of bis(cyclopentadienyl) β-diketiminate ytterbium comples

Reaction of the β-diketiminate ytterbium dichloride LYbCl2（THF）2（L=2,6-Pri2C6H3）NC（Me）CHC（Me）N（C6H3-2,60Pri2）（1）with 2equiv off C5H5Na in THF gave rise to the title complex LYb（C5H5）2（2）,and the crystal structure of the complex 2 was determined by single-crystal X-ray diffraction.The crystal belongs to orthorhombic,space group P21212 with a=4.3219（6）,b=1.6602（2）,c=0.9604（1）nm,V=6.891（2）nm3,Z=8,Dc=1.390 Mg·m-3,R=0.0331,wR=0.0535.In the molecular structure of the title complex,the central metal atom Yb is coordinated by two cyclopentadienyl rings and two nitrogen atomes of β-diketiminate group to form an eight-coordinate distorted tetrahedral geometry.

Reaction of the β - diketiminate ytterbium dichloride LYbCl2（THF）2（L = 2,6 - Pr2^iC6H3）NC（Me）CHC（Me）N（C6H3-2,60Pr2^i）（1）with 2equiv off C5H5Na in THF gave rise to the title complex LYb（C5H5）2（2）, and the crystal structure of the complex 2 was determined by single - crystal X - ray diffraction. The crystal belongs to orthorhombic, space group P21212 with a = 4.3219（6）, b = 1.6602（2）, c = 0.9604（1）nm, V = 6.891（2）nm^3, Z = 8, Dc = 1.390 Mg·m^-3, R = 0.0331, wR = 0.0535. In the molecular structure of the title complex, the central metal atom Yb is coordinated by two cyclopentadienyl rings and two nitrogen atomes of β - diketiminate group to form an eight - coordinate distorted tetrahedral geometry.