Collection prepared on materials , provided by the participants of the All-Russian conference-school with international participation "Electronic , spin and quantum processes in molecular and crystalline systems", dedicated to the 25th anniversary of the Institute of Physics of Molecules and Crystals of the UFS RAS and the 100th anniversary of the creation of the Ufa Physical Institute (1919-1937 . ) and held from 22 to 25 May 2019 in IFMC UFC RAS, g. Ufa . The conference covers a wide range of current fundamental and applied problems related to electronic, spin and quantum processes occurring in molecular structures, organic, magnetic, nanostructured materials and liquid crystals. The publication is intended for researchers, graduate students and students of physical and physico-chemical specialties .