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用凝胶法合成了标题化合物[NH4(15-C-5)2][Cd2(SCN)5](15-C-5=C10H20O5)的晶体,并对其进行了红外光谱、元素分析等各项物理性质的测试,并经X射线单晶结构分析得到了配合物的全部晶体学数据:Mr=973.78,正交晶系,空间群Pnma,晶胞参数a=10.507(1)A,b=16.584(2)A,c=23.494(2)A,V=4093.8(3)A3,Z=4,Dc=2.580g/cm3,μ=13.31cm(-1),F(000)=1968,R=0.070,Rω=0.085。结构分析结果表明,配阳离子是由一个NH4+和两个15-C-5组成的,NH4+没有进入15-C-5空腔内,而是位于两个15-C-5之间,呈夹心结构;配阴离子是以[Cd2(SCN)5]为单元的阴离子长键,其中一组SCN-被四个Cd离子共享,其余两组SCN-被两个Cd离子共享,呈变形八面体构型。配阳离子[NH4(15-C5)2]+和配阴离子[Cd2(SCN)5]-间靠静电力结合成配合物晶体。
The crystal of the title compound [NH4 (15-C-5) 2] [Cd2 (SCN) 5] (15-C-5 = C10H20O5) was synthesized by the gel method and subjected to the infrared spectroscopy, the elemental analysis The physical properties of the compounds were tested and all the crystallographic data of the complexes were obtained by X-ray single crystal structure analysis: Mr = 973.78, orthorhombic, space group Pnma, unit cell parameter a = 10.507 (1) A, b = 16.584 (2) A, c = 23.494 (2) A, V = 4093.8 A3, Z = 4, Dc = 2.580 g / cm3, μ = 13.31 cm -1), F (000) = 1968, R = 0.070, Rω = 0.085. Structural analysis showed that the cation was composed of one NH4 + and two 15-C-5, NH4 + did not enter the 15-C-5 cavity, but located between the two 15-C-5, with a sandwich structure ; Anion is an anion long bond with [Cd2 (SCN) 5] as a unit, one group of SCN- is shared by four Cd ions, and the other two groups of SCN- are shared by two Cd ions in a deformed octahedral configuration. With the cation [NH4 (15-C5) 2] + and anion [Cd2 (SCN) 5] - by electrostatic force combined into complex crystals.