Quantum-Chemical Study of the Molecular Structure of Tetra(4-tert-butyl-5-nitro)phthalocyanine, as well as Complexes of Tetra(4-tert-butyl-5-nitro)- and Tetra(4-tert-butyl-5- amino)phthalocyanine with Nickel - Magdalinova, Natalya; Sharova, Ksenia; Klyueva, Mariya; Klyuev, Mikhail (Макрогетероциклы/Macroheterocycles, 2023)