The possible relation between the stored energy and the thermoluminescence in gamma-and electron-irradiated NaCl samples has been studied in detail. It has been found that the thermoluminescence, which only exhibits a single glow peak, always occurs at temperatures higher than the temperature at which the main stored-energy peak appears. It is concluded that different recombination processes are involved in these two phenomena. Plastic deformation and doping with calcium induce a stored-energy spectrum different from the spectrum observed in pure and as-cleaved samples, but the amount of stored energy does not change for a given irradiation dose. It is pointed out that the same type of radiationinduced defects might be annealed in the low-temperature region of the stored-energy spectrum as well as in the peak around 520 K.

Methods for the synthesis of 1,2,4 triazolium 4 nitrimides with nitraminoalkyl , hetaryl methyl, nitro ether, and dinitroalkyl substituents are developed. These compounds are useful models for evaluation of the effect of relative positions of the nitro groups on the properties of substances.

No abstract

No abstract

A general approach to the synthesis of borohydride complexes containing one or two dinitroamide fragments has been suggested. Based on a smooth substitution of halide in haloborane or dibromoborane complexes with N,N-dinitroamide salts, this method provides various N,N-dinitroamidoboranes complexes in good yields and in analytically pure form. By means of spectroscopic and computational methods, it was demonstrated that dinitroamidoborane complexes could form as both B,N- and B,O-isomers, which did not interconvert at ambient temperature.