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用x光单晶衍射法测定了三种四核钴原子簇化合物的品体和分子结构,它们均为暗红色或红色片状晶体,Co_4(CO)_8(μ-CO)_2(μ_4-POC_3H_7)_2(I)属单斜品系,空间群P(21/a),晶胞参数属单斜晶系,空间群P_(21/n),晶胞参数属三斜晶系,空间群P1,晶胞参数,分子核心为类八面体构型,即四个钴原子以平面矩形排列,而平面上下由四桥合磷原子构成骨架碎片Co_4P_2,近似为D_(2k)对称性,而整个分子具有对称中心。
The crystal structures and molecular structures of three kinds of tetranuclear cobalt clusters have been determined by X-ray single crystal diffraction. They are all dark red or red flaky crystals. Co_4 (CO) _8 (μ-CO) _2 (μ_4-POC_3H_7 ) _2 (I) is a monoclinic line with spatial group P (21 / a). The unit cell parameters are monoclinic and the space group P 21 / n. The unit cell parameters are triclinic, space group P1, Unit cell parameters, the molecular core is an octahedral configuration, that is, the four cobalt atoms are arranged in a plane rectangle, while the plane is composed of four bridged phosphorus atoms to form framework fragment Co_4P_2, which is approximately D 2k symmetry, and the whole molecule has Symmetry center.