The photolysis of HN3 in the presence of dimethylacetylene in 12 K matrices gives reaction products in Xe different from those formed in Ar. In Xe the reaction results in N-methyl-1- amino-1-propyne as the major product, whereas in Ar the primary product is 3, 3- dimethylketenimine. In Xe, 3, 3-dimethylketenimine is produced in low yield, and in both matrices another product, probably 2, 3-dimethyl-lH-azirine, is formed as a minor product. ...
