大环穴醚双铜叠氮配合物 [Cu~2(N~3)~2(C~1~6H~3~8N~6)](ClO~4)~2的合成和结 构

本文报道二价铜与叠氮、大环穴醚(C~1~6H~3~8N~6)配合物的合成和晶体结构。配合物组成为[Cu~2(N~3)~2(C~1~6H~3~8N~6)](ClO~4)~2,晶体属于空间群C~i^1-P1,晶胞参数a=17.669(10),b=13.355(5),c=6.414(3)︿;α=103.85(4),β=100.40(4),γ=71.30(3)ⅲ;对1870个反射精修的最后一致性因子R=0.088。此配合物中Cu(II)呈平面正方四配位结构形式,这在类似饱和大环穴醚双铜配合物中,还是首次发现。每个配位多面体由大环穴醚配体提供三个氮原子,叠氮离子提供一个氮原子,两个Cu(II)离子之间不存在叠氮桥,间距为5.12︿。

Synthesis and crystal structure of the azido dinuclear copper(II) cryptates of macrocyclic ligands [Cu~2(N~3)~2(C~1~6H~3~8N~6)](ClO~4) ~2

This paper deals with the synthesis and crystal structure of the azido dicopper(II) macrocyclic complex, the macrocyclic cryptand C~1~6H~3~8N~6 is 1, 4, 7, 12, 15, 18-hexaazacyclodocosane. The compound [Cu~2(N~3)~2(C~1~6H~3~8N~6)](ClO~4)~2 crystallizes in the triclinic system, space group C~i^1-P1, with a=17.669(10), b=13.355(5) , c=6.414(3)︿; α=103.85(4), β=100.40(4), γ=71.30(3)ⅲ and Z=2. In the [Cu~2(N~3)~2(C~1~6H~3~8N~6)]^2^+ unit, the two copper cations are tetracoordinate CuN~4 centers, with square geometry, involving thre ring nitrogens and one terminally bound azide ions. There is no longer an azido bridge between the two copper atoms, which are 5.123 (4)︿ appart. The macrocycle is in a chair-type conformation.