<i>tert</i>-Butyl-End-Capped Polyynes: Crystallographic Evidence of Reduced Bond-Length Alternation
作者:Wesley A. Chalifoux、Robert McDonald、Michael J. Ferguson、Rik R. Tykwinski
DOI:10.1002/anie.200902760
日期:2009.10.5
Cumulene or polyyne? The synthesis and X‐ray crystallographic analysis of a series of polyynes up to 20 Csp atoms in length and end‐capped with tert‐butyl groups has been achieved. The structural data show a distinct reduction in the bond‐length alternation as a function of the polyyne length, but this trend appears to saturate before a cumulenic‐like structure is achieved.
异丙苯还是聚炔?已经完成了一系列长度达20 C sp原子并被叔丁基封端的聚炔的合成和X射线晶体学分析。结构数据显示,键长交替随聚炔长度的变化而显着减少,但这种趋势似乎在达到类似聚对二甲苯的结构之前就已经饱和。
Bohlmann, Chemische Berichte, 1953, vol. 86, p. 657,665