Tags: Chemical Compound, Chemical Substance.
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.