Synthesis of unsymmetrical N-(2-tert-butylphenyl)-N-(4-tert-butylphenyl)nitroxyl radical, the first stable diarylnitroxyl with vacant para-position - Levitskiy, Oleg A.; Sentyurin, Vyacheslav V.; Bogdanov, Alexey V.; Magdesieva, Tatiana V. (Mendeleev communications, 2016)