TY JOUR TI KW квантово-химический расчет KW MNDO KW DFT-PBE0/6-311G** KW гексопреналин KW кислотная сила KW quantim-chemical calculation KW MNDO KW DFT-PBE0/6-311G** KW hexoprenaline KW acid strength JO Herald of Technological University AU Babkin, V.A. AU Andreev, D.S. AU Ignatov, A.V. AU Belousova, V.S. AU Stoyanov, O.V. PY 2025 IS 17 PB Kazan National Research Technological University