Diacetylene-hydrogen fluoride complexes and their deuterated counterparts have been characterized in solid argon at 10 K by infrared spectroscopy. The observation of two new sets of HF stretching, CH stretching, and CH bending absorptions indicates that two primary product 1: l complexes were trapped in the matrix. These absorption bands characterize a C4H2--HF? r complex and a C4H2--FH u complex whose relative yields exhibit a ...
