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1 Central European Journal of Energetic Materials

1 2005

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A Relationship between 15N NMR Chemical Shifts and Detonation Characteristics of Polynitro Derivatives of Arenes and Polyazaarenes

100%

Zeman S. , Pešková M.

tom Vol. 2, nr 3

71-84

The 15N NMR chemical shifts of eighteen polynitro arenes have been determined. The relationships were found and discussed between the characteristics of detonation and thermal decomposition, on the one hand, and 15N NMR chemical shifts of nitrogen atoms of the primarily split off nitro groups, on the other hand. Also the relationships are specified between the 15N NMR chemical shifts in the solid state of some polynitro derivatives of aminopyridines and aminopyrimidines, on the one hand, and squares of their detonation velocities, on the other. It has been stated that the chemical micromechanisms of primary fission processes of molecules of the studied compounds in the initiation by shock should be the same as in the case of their low-temperature thermal decomposition. Also mentioned is relevance of the modified Evans-Polanyi-Semenov relationship. On the basis of the findings presented it also has been stated that the detonation transformation itself of these polynitro compounds should be preceded by an induction period.