以苯硒酚为配体的四核银簇合物[Me_4N]_2[Ag_4(SePh)_6]·CH_3OH的合成与晶体结构

Synthesis and Crystal Structure of a Tetranuclear Silver Cluster Complex with Selenophenolate Ligand 2 CH3OH

合成了以苯硒酚为配体的四核银簇阴离子化合物［Ｍｅ４Ｎ］２［Ａｇ４（ＳｅＰｈ）６］·ＣＨ３ＯＨ，并用Ｘ射线单晶衍射法测定了其晶体结构．簇阴离子的核心Ａｇ４Ｓｅ６是由４个Ａｇ原子组成的四面体内接于６个Ｓｅ原子组成的变形八面体中。

The title complex was prepared from the reaction of PhSeH, Et3N, AgNO3 and Me4NCl in CH3CN/MeOH under a nitrogen atmosphere. The colorless, airsensitive crystal belongs to the monoclinic system with space group P21/c, a=1.709 4(3) nm, b=1562 6(3) nm, c=2.123 7(4) nm, =110.83(3), V=5.301 7(17) nm3, Dc=1.940 g/cm3, Z=4. The final R is 0.080 9 for 6 938 reflection. The structure of the title complex is built up by Ag4Se6 adamatanetype cluster anion and bulky cation. The structure of the title cluster anion 2- can be considered as a tetrahedron of silver atoms inscribed in a distorted octahedron of selenium atoms. The silver atoms are in a distorted trigonal planar coordination by three 2selenium atoms.