Four-site cooperative spin crossover in a mononuclear Fe(II) complex

Anders Lennartson; Andrew D Bond; Stergios Piligkos; Christine J McKenzie

doi:10.1002/anie.201204207

Four-site cooperative spin crossover in a mononuclear Fe(II) complex

Angew Chem Int Ed Engl. 2012 Oct 29;51(44):11049-52. doi: 10.1002/anie.201204207. Epub 2012 Sep 28.

Authors

Anders Lennartson¹, Andrew D Bond, Stergios Piligkos, Christine J McKenzie

Affiliation

¹ Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark.

PMID: 23023787
DOI: 10.1002/anie.201204207

Abstract

Round and round: A mononuclear Fe(II) complex (see picture) with an N(4)S(2) coordination set has been characterized in four polymorphic forms. Two of the polymorphs display four-site cooperative spin crossover (SCO), shown conclusively by the crystal structure of a fully ordered 1:3 high-spin/low-spin state. The presence of S donor atoms in SCO-active compounds is unusual, and further investigation of Fe(II) complexes for SCO activity is warranted.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Crystallography, X-Ray
Ferrous Compounds / chemical synthesis
Ferrous Compounds / chemistry*
Models, Molecular
Molecular Structure
Quantum Theory*

Substances

Ferrous Compounds