Hysteretic Four-Step Spin Crossover within a Three-Dimensional Porous Hofmann-like Material

John E Clements; Jason R Price; Suzanne M Neville; Cameron J Kepert

doi:10.1002/anie.201605418

Hysteretic Four-Step Spin Crossover within a Three-Dimensional Porous Hofmann-like Material

Angew Chem Int Ed Engl. 2016 Nov 21;55(48):15105-15109. doi: 10.1002/anie.201605418. Epub 2016 Oct 21.

Authors

John E Clements¹, Jason R Price², Suzanne M Neville¹, Cameron J Kepert¹

Affiliations

¹ School of Chemistry, University of Sydney, Sydney, NSW, 2006, Australia.
² Australian Synchrotron Company Limited, 800 Blackburn Road, Clayton, VIC, 3168, Australia.

PMID: 27766726
DOI: 10.1002/anie.201605418

Abstract

Materials that display multiple stepped spin crossover (SCO) transitions with accompanying hysteresis present the opportunity for ternary, quaternary, and quinary electronic switching and data storage but are rare in existence. Herein, we present the first report of a four-step hysteretic SCO framework. Single-crystal structure analysis of a porous 3D Hofmann-like material showed long-range ordering of spin states: HS, HS_0.67 LS_0.33 , HS_0.5 LS_0.5 , HS_0.33 LS_0.67 , and LS. These detailed structural studies provide insight into how multistep SCO materials can be rationally designed through control of host-host and host-guest interactions.

Keywords: host-guest systems; metal-organic frameworks; microporous materials; spin crossover; supramolecular chemistry.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.