摘要
标题三核铬配合物,C_7H_(17)Cr_3O_(20),M_r=577.2,属三斜晶系,空间群P,a=6.654(1),b=11.129(3),c=13.906(2),α=103.2188(3),β=103.5362(3),γ=92.0429(3)°;V=970.2(7) ~3。Z=2。D_c=1.976g.cm^(-3)。原子位置由直接法(MULTAN-82)和差Fourier法解出,经全矩阵最小二乘法精修,对于2801个I≥3σ(I)的独立衍射点,最后R=0.077。分子结构属于一般三核金属配合物构型,其显著特点是:有一个端基-HCOO单齿配位在一个Cr原子上,形成中性三核铬配合物。
The title trinuclear chromium complex, C7H17Cr3O20, crystallizes in space group P1 with a = 6. 654(1), 6 = 11. 129(3), c=13. 906(2) (?) ,β=103. 2188(3), γ=103. 5362(3) ,* = 92. 0429 (3)°, Vc=970. 2(7)(?)3, Z = 2, Dc=1. 976g/cm3, Mr = 577. 2. The structure was solved by direct methods (MULTAN-82) and refined by full-matrix least squares techniques to final R = 0. 077 for 2801 reflections [I≥3σ(I)]. The results of the structure determination reveal that there is a terminal -HCOO group rnonodentately is coordinated to Cr(1) atom in the title molecule.
基金
福州结构化学开放研究实验室
福建省自然科学基金
