Spin transition in a ferrous chloride complex supported by a pentapyridine ligand

Manuel Boniolo; Sergii I Shylin; Petko Chernev; Mun Hon Cheah; Philipp A Heizmann; Ping Huang; Nessima Salhi; Kamal Hossain; Anders Thapper; Marcus Lundberg; Johannes Messinger

doi:10.1039/c9cc09630b

Spin transition in a ferrous chloride complex supported by a pentapyridine ligand

Chem Commun (Camb). 2020 Mar 4;56(18):2703-2706. doi: 10.1039/c9cc09630b. Epub 2020 Feb 14.

Authors

Manuel Boniolo¹, Sergii I Shylin, Petko Chernev, Mun Hon Cheah, Philipp A Heizmann, Ping Huang, Nessima Salhi, Kamal Hossain, Anders Thapper, Marcus Lundberg, Johannes Messinger

Affiliation

¹ Department of Chemistry -Ångström Laboratory, Uppsala University, PO Box 523, 75120 Uppsala, Sweden. johannes.messinger@kemi.uu.se.

PMID: 32057045
DOI: 10.1039/c9cc09630b

Abstract

Ferrous chloride complexes [Fe^IIL_xCl] commonly attain a high-spin state independently of the supporting ligand(s) and temperature. Herein, we present the first report of a complete spin crossover with T_1/2 = 80 K in [Fe^II(Py5OH)Cl]⁺ (Py5OH = pyridine-2,6-diylbis[di(pyridin-2-yl)methanol]). Both spin forms of the complex are analyzed by X-ray spectroscopy and DFT calculations.