Kolotilov S. The influence of chemical and crystal structure on magnetic and sorption properties of microporous multispin systems based on polynuclear complexes of 3d metal ions and their nanosized oxides

The theses presents the results of studies of microporous mutispin systems - porous coordination polymers (PCP) and supramolecular compounds based on binuclear Cu2+ complexes with oxime-containing or carboxylate ligands, trinuclear homometallic carboxylate complexes with FeIII3 metal cores, trinuclear heterometallic carboxylate FeIII2MnII, FeIII2CoII, FeIII2NiII complexes, penta- and hexanuclear hydroxamate CuII5 or CuII5LnIII complexes and dicarboxylate, bi- or tripyridine bridging ligands, PCPs of 3d and 4f metals, formed by self-assembling, as well as composites, formed on the basis of 3d metal oxide nanoparticles and porous matrixes of different nature (silica molecular sieve MCM-41 or PCP Na2Zn3[Fe(CN)6]2). Structural rearrangements, which occur at change of temperature or change of guest molecules in pores of PCPs, were studied. Porous structure of PCPs was characterized by adsorption of N-2 and H2, absorption of substrates of different nature (alkanes, alcohols) by such systems was studied. The influence of lability of crystal lattices of PCPs on their sorption and magnetic properties was shown. Parameters of exchange interactions between paramagnetic centers were calculated from experimental data. Selective magnetic sorbents for extraction of several organic compounds were created on the basis of ferrimagnetic composites.