The bis(hexacarbonyldicobalt) complexes of nine ten- to fourteen-membered cyclic diynes (1–3, 5, 6, 8 and 10–12) have been isolated. The structural parameters of the complexes have been examined by means of X-ray investigations on single crystals. It was found that the chair like conformation of the uncomplexed rings is changed into a twisted one upon complexation. In addition to the pure hydrocarbons the syntheses of the bis(hexacarbonyldicobalt) complexes of eight heterosubstituted cyclic diynes (4, 7, 9, 13, 15–17)
and of a mono(hexacarbonyldicobalt) complex 18 are reported and their structural parameters are presented.
已分离出九种十至十四元环二炔(1-3、5、6、8 和 10-12)的双(六羰基二
钴)络合物。通过对单晶体进行 X 射线研究,考察了这些配合物的结构参数。研究发现,未络合环的椅子状构象在络合后变成了扭曲的构象。除纯碳氢化合物外,还报道了八种杂取代环二炔(4、7、9、13、15-17)的双(六羰基二
钴)络合物和一种单(六羰基二
钴)络合物 18 的合成及其结构参数。