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合成了硫氰酸合希土酸四丁基季铵盐配合物,测定了它们的远红外光谱及部分配合物的中红外光谱,结果表明,配合物中的NCS~-是以氮原子与Ln~(3+)配位。用X射线单晶衍射法测定了[(n-C_4H_9)_4N]_3Nd(NCS)_6晶体的结构,结果表明,该晶体属单斜晶系,C_c空间群,晶胞参数为:a=25.188(8)(?),b=13.320(6)(?),c=25.322(8)(?),β=121.30(2)°,晶胞体积V=7258.9(?)~3,每一晶胞中有四个配合物分子,中心离子Nd~(3+)与六个来自NCS~-的氮原子配位,这六个氮位于配位正八面体的六个顶角上,构成配阴离子Nd(NCS)_6~(3-),它与三个[(n-C_4H_9)_4N]~+以静电引力结合成中心分子,所以晶体为离子型晶体。
The tetrabutyl quaternary ammonium salt of thiocyanate and its derivatives was synthesized and their far-infrared spectra and the mid-infrared spectra of some complexes were determined. The results show that the NCS ~ ~ (3+) coordination. The crystal structure of [(n-C_4H_9) _4N] _3Nd (NCS) _6 was determined by X-ray single crystal diffraction. The results show that the crystal belongs to the monoclinic and C_c space group with unit cell parameters of a = 25.188 (?), B = 13.320 (6) (?), C = 25.322 (8) (?), Β = 121.30 (2) ° and unit cell volume V = 7258.9 There are four complex molecules, the central ion Nd ~ (3 +) and six NCS ~ - from the nitrogen atoms, the six nitrogen located in the coordination of the octahedron of the six vertex angle, with anion Nd ( NCS) _6 ~ (3-), which with the three [(n-C_4H_9) _4N] ~ + electrostatic attraction into the central molecule, so the crystal is ionic crystal.