tert-Butylphosphaacetylene is an organophosphorus compound. Abbreviated t-BuCP, it was the first example of an isolable phosphaalkyne. Prior to its synthesis, the double bond rule had suggested that elements of Period 3 and higher were unable to form double or triple bonds with lighter main group elements because of weak orbital overlap. The successful synthesis of t-BuCP discredited much of the double bond rule and opened new studies into the formation of unsaturated phosphorus compounds.

CAS：78129-68-7
中文别名：
英文别名：1-Phospha-1-butyne,3,3-dimethyl;2,2-Dimethylpropylidinphosphane;2,2-dimethylpropylidinephosphane;2,2-dimethlpropylidynephosphine;tert-butylphosphaethyne;2,2-dimethylpropylidynephosphine;
分子式：C5H9P
分子量：100.099
精确质量：100.044
Psa：0.0
Logp：2.4022

海关编码：2901299090