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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 tri-nuclear chromium complexes, C_7H_ (17) Cr_3O_ (20) and M_r = 577.2, belong to triclinic system with space group P, a = 6.654 (1), b = 11.129 , 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). The position of the atom was solved by the direct method (MULTAN-82) and the difference Fourier method, and refined by full matrix least square method. For 2801 independent diffraction points with I≥3σ (I), the final R = 0.077. Molecular structure belongs to the general trinuclear metal complex configuration, its notable features are: there is a terminal-HCOO monodentate coordination in a Cr atom, the formation of neutral trinuclear chromium complexes.