Co-existence of five- and six-coordinate iron() species captured in a geometrically strained spin-crossover Hofmann framework

Inclusion of an angular bridging ligand, 4,2′:6′,4′′-terpyridine (TPy), into a Hofmann-type framework produces an irregular network in which six- and five-coordinate Fe II species co-exist. The octahedral sites show thermally-induced spin-crossover (SCO) and the rare five-coordinate Fe II sites are...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2022-06, Vol.51 (25), p.9596-96
Main Authors: Xu, Luonan, Xie, Zixi, Zenere, Katrina A, Clegg, Jack K, Kenny, Elise, Rijs, Nicole J, Jameson, Guy N. L, Kepert, Cameron J, Powell, Benjamin J, Neville, Suzanne M
Format: Article
Language:English
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Summary:Inclusion of an angular bridging ligand, 4,2′:6′,4′′-terpyridine (TPy), into a Hofmann-type framework produces an irregular network in which six- and five-coordinate Fe II species co-exist. The octahedral sites show thermally-induced spin-crossover (SCO) and the rare five-coordinate Fe II sites are high-spin. The use of an angular ligand drives the formation of an irregular Hofmann framework whereby 6-coordinate and rare 5-coordinate Fe II species co-exist - the 6-coordinate species show a spin-crossover transition.
ISSN:1477-9226
1477-9234
DOI:10.1039/d2dt01371a