Journal
CHEMICAL SCIENCE
Volume 9, Issue 41, Pages 7986-7991Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sc02774a
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Funding
- National Key R&D Program of China [2018YFA0306002]
- NSFC [21522103, 21471077, 91622110, 21701046, 11774178]
- NSF of Jiangsu Province [BK20150017, BK20151542]
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The on-off switching of spin-crossover (SCO) and single-molecule magnetism (SMM) remains highly attractive, especially if it involves dynamic crystal-to-crystal transformation. Herein we report the first molecule, a mononuclear cobalt(ii) complex, that exhibits on-off switching between SCO and SMM reversibly during crystal-to-crystal transformation. Subtle structural transformation triggered by a simple dehydration-rehydration process induces significant geometrical changes of the Co-II center and modification of the supramolecular interactions and switches its colour and magnetic properties (dark red/SCO-on/SMM-off <-> orange/SCO-off/SMM-on). This work suggests that modification of the weak supramolecular interactions could be very effective in achieving switchable materials involving both SCO and SMM properties.
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