Structural Chemistry & Crystallography Communication

Thermally indused phase transitions in breathing crystals: Structural peculiarities

International Conference on Applied Crystallography
October 16-17, 2017 | Chicago, USA

G. Romanenko

International Tomography Center, Russia

Posters & Accepted Abstracts: Struct Chem Crystallogr Commun

DOI: 10.21767/2470-9905-C1-003

Abstract

A family of heterospin complexes based on copper (II) hexafluoroacetylacetonate Cu(hfac)2 with persistent nitronyl nitroxides LR was named as breathing crystals due to their ability to undergo reversible 'Single-Crystal-to-Single-Crystal' phase transformations. Studying of these processes facilitates a detail investigation and understanding of solid dynamics. Phase exchange clusters 'Cu-O�-N' or 'N-�O-Cu-O�-N'. This reorganization causes an appearance of magnetic anomalies on the dependence of the effective magnetic moment vs temperature (or pressure) [1-5]. Our studies of more than one hundred complexes showed a wide variety of magnetic anomalies caused by structural transformations and provide valuable information on the spin state in a heterospin solid.