2,4,6,8-Tetraazidopyrimido[5,4-d]pyrimidine: a novel energetic binary compound

Abstract

Azidation of 2,4,6,8-tetrachloropyrimido[5,4-d]pyrimidine gave tetraazidopyrimido[5,4-d]pyrimidine (C6N16) with 86% yield. The title compound undergoes azide-tetrazole taumerism in neutral organic solvents, but exists as protonated C2-symmetric tetraazide dication in trifluoroacetic acid. On...