(Lviv Polytechnic Publishing House, 2015) Zvir, Ivanna; Dutka, Volodymur; Matsyuk, Natalia; Matsyuk, Mariya; Zastavska, Gаlyna; Kovalskyi, Yaroslav; Ivan Franko National University of Lviv
Optimal-geometric structures of molecules was calculated with semi-empirical quantum-chemical methods. The heat of formation (ΔHf), the heat of reaction (ΔHex) was found. Numerical values of ΔHf was calculated theoretically is satisfactorily coincide with the data obtained experimentally.
