ENERGIES OF ISOMERIZATION IN NITROMETHYL DERIVATIVES OF TERAZOL

摘要

Energies of combustion are measured and enthalpies of formation in the standard condition derivatives of 1,5 and 2,5 isomers of tetrazol (1-methyl-5-nitromethyltetrazol and 2-methyl-5-nitromethyltetrazol, 1-nitromethyl-5-methyltetrazol and 2-nitromethyl-5-methyltetrazol) are received. On the basis of the data received and available in the literature the thermochemical analysis of influence of the chemical nature and a place of connection of functional groups on values energy of isomerization in isomers of tetrazol is carried out. Energies of isomerization are estimated as the differences in enthalpies of formation of the same name derivatives of 1,5 and 2,5 isomers of tetrazol. It is established, that depending on a chemical nature and place of connection of functional groups the values of energy isomerization lays in limits from -29 up to + 35 kJ·mol~(-1).