Determination of carbon-astatine chemical bond breaking energy

Determined are the values of carbon-astatine chemical bond breaking energy in benzolastatine, n- and izo-propylastatide, proceeding from temperature dependence of the constant of the thermal decomposition rate of these compounds. A plant is made to study the pyrolysis kinetics of weightless quantities of the substance. Conditions and results of investigation of pyrolysis kinetics are presented. Breaking energy of the carbon-astatine chemical bond in benzolastatine is 44.9+-5.1 kcal/mol, in n-propylastatide-38.6+-2.6 kcal/mol, and in izo-propylastatide-36.3+-2.3 kcal/mol. Obtained values of breaking energy of the carbon-astatine chemical bond appeared to be similar to extrapolar ones