Effects of coordination sphere on unusually large zero field splitting and slow magnetic relaxation in trigonally symmetric molecules.

ABSTRACT: Geometric control in mononuclear complexes has come to the forefront in the field of molecular magnets due to its profound effects on relaxation pathways and blocking temperature in single molecule magnets (SMMs). Herein we report the synthesis and magnetic characterization of six trigonally symmetric, divalent Fe, Co, and Ni molecules, with the rigid geometry enforced via the use of the tris-anionic, tetradentate ligand MST (N,N',N''-[2,2',2''-nitrilotris-(ethane-2,1-diyl)]tris(2,4,6-trimethylbenzenesulfonamide)). A systematic study on the effect of converting between trigonal monopyramidal complexes, (Me₄N)[M(MST)], and trigonal bipyramidal complexes, (Me₄N)[M(MST)(OH₂)] was conducted experimentally and computationally. It was

SUBMITTER: Schulte KA 

PROVIDER: S-EPMC6301199 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature