From: Synthesis of a new class of carbon–bonded anionic sigma complexes with 1,3-dimethyl-2,6-dioxo-5-(2,4,6-trinitrophenyl)-1,2,3,6-tetrahydropyrimidin-4-olate moiety as insensitive high energy density materials –– implications from impact sensitivity and thermal testings
Complex
Stage
Activation energy kJ/mol (kcal/mol)
Using Ozawa method
Using Kissinger’s method
1
I
81(19)
80(19)
II
54(13)
47(11)
2
225(53)
229(54)
105(24)
100(24)
3
101(24)
156(37)
158(37)