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以二甲亚砜( D M S O) 作配体与三价希土离子配位,选用四苯硼酸根 B Ph4 - 作为大阴离子,合成了一系列希土配合物[ Ln( D M S O)7 Cl][ B Ph4]2( Ln = La 、 Nd 、 Sm 、 Eu 、 Gd 、 Tb 、 Dy 、 Tm) ,并用元素分析,红外光谱对其进行表征,采用单晶 X射线四圆衍射测定了[ Eu( D M S O)7 Cl][ B Ph4]2 的晶体结构。铕配合物属三斜晶系,空间群为 P1- ,晶胞参数 Eu : a = 12 .539(2) , b = 12 .755(2) , c = 24 .583(3)〓; α= 93 .406(8) , β= 104 .630(8) , γ= 112 .873(12)°, V= 3455 .4(8) 〓3 , Z= 2 , Mr = 1372 .73 , Dc= 1 .319 g·cm - 3 , μ= 1 .204 m m - 1 , F(000) = 1424 , R= 0 .0349 , Rw = 0 .0818 。配位大阳离子[ Eu( D M S O)7 Cl]2 + 中希土 Eu( Ⅲ) 的配位数是8 ,来自七个亚砜配体的亚磺酰基氧原子和一个氯离子与希土配位,形成一畸变的四方反棱柱大阳离子配位多面体,而四苯硼酸根仅?
A series of rare earth complexes [Ln (D M S O)] were synthesized by using dimethyl sulfoxide (D M S O) as a ligand to coordinate with trivalent earth ions. ) Were synthesized and characterized by elemental analysis and FTIR spectroscopy. The crystal structure was characterized by single crystal X-ray four-circle diffraction The crystal structure of [Eu (D M S O) 7 Cl] [B Ph4] 2 was obtained. Europium complexes belong to the triclinic system, the space group is P1-, unit cell parameter Eu: a = 12. 539 (2), b = 12. 755 (2), c = 24. 583 (3) 〓; α = 93. 406 (8), β = 104. 630 (8), γ = 112. 873 (12) °, V = 3455. 4 (8) 〓 3, Z = 2, Mr = 1372. 73, Dc = 1. 319 g · cm - 3, μ = 1. 204 m m -1, F (000) = 1424, R = 0. 0349, Rw = 0. 0818. The coordination number of the rare earth Eu (Ⅲ) in the complex cation [Eu (D M S O) 7 Cl] 2 + is 8, and the sulfinyl oxygen atoms from seven sulfoxide ligands and one chloride ion and Soil coordination, the formation of a distorted tetragonal anti-prism large cation coordination polyhedron, and tetraphenylborate only?