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

Luonan Xu; Zixi Xie; Katrina A Zenere; Jack K Clegg; Elise Kenny; Nicole J Rijs; Guy N L Jameson; Cameron J Kepert; Benjamin J Powell; Suzanne M Neville

doi:10.1039/d2dt01371a

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

Dalton Trans. 2022 Jun 27;51(25):9596-9600. doi: 10.1039/d2dt01371a.

Authors

Affiliations

¹ School of Chemistry, The University of New South Wales, Sydney, New South Wales, 2052, Australia. s.neville@unsw.edu.au.
² School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia.
³ School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland, 4072, Australia.
⁴ School of School of Mathematics and Physics, The University of Queensland, St Lucia 4072, Queensland, Australia.
⁵ School of Chemistry, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia.

PMID: 35670370
DOI: 10.1039/d2dt01371a

Abstract

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.