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†

Manuel Boniolo,

^a Sergii I. Shylin,

^a Petko Chernev,

^a Mun Hon Cheah,

^a Philipp A. Heizmann,^a Ping Huang,^a Nessima Salhi,^a Kamal Hossain,^a Anders Thapper,

^a Marcus Lundberg

^a and Johannes Messinger

*^ab

Author affiliations

* Corresponding authors

^a Department of Chemistry – Ångström Laboratory, Uppsala University, PO Box 523, 75120 Uppsala, Sweden
E-mail: johannes.messinger@kemi.uu.se

^b Department of Chemistry, Chemical Biological Centre, Umeå University, 90187 Umeå, Sweden

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.

Chemical Communications

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

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

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