2. Novel Mononuclear Spin-Crossover Complexes

  1. Birgit Weber

Published Online: 18 JAN 2013

DOI: 10.1002/9781118519301.ch2

Spin-Crossover Materials: Properties and Applications

Spin-Crossover Materials: Properties and Applications

How to Cite

Weber, B. (2013) Novel Mononuclear Spin-Crossover Complexes, in Spin-Crossover Materials: Properties and Applications (ed M. A. HALCROW), John Wiley & Sons Ltd, Oxford, UK. doi: 10.1002/9781118519301.ch2

Editor Information

  1. School of Chemistry, University of Leeds, UK

Author Information

  1. Inorganic Chemistry II, Universität Bayreuth, Germany

Publication History

  1. Published Online: 18 JAN 2013
  2. Published Print: 15 FEB 2013

ISBN Information

Print ISBN: 9781119998679

Online ISBN: 9781118519301



  • coordination geometries;
  • coordination number (CN);
  • coordination sphere;
  • iron complexes;
  • metal centres;
  • mononuclear spin-crossover (SCO) complexes


This chapter on novel mononuclear spin-crossover (SCO, or spin-transition, ST) complexes gives an overview of some new developments since 2003. The overview is limited to mononuclear systems, focusing on ST complexes with new or unusual coordination number (CN) and coordination spheres. The section on the novel coordination numbers (CN), coordination geometries and metal centres in this chapter starts with detailed reflections on iron(II) SCO complex with an N3O2C2 coordination sphere, where the iron centre has a CN of 7.2, 29. Examples of rare manganese(III)34 and cobalt(II)36 SCO complexes with N4O2 coordination spheres are also given. The chapter also discusses iron complexes with novel ligand donor atoms and new ligand systems. In this discussion, donor atom set is used as a sorting key, starting with a few selected examples with an N6 coordination sphere, followed by a larger section on new systems with an N4O2 coordination sphere and some new approaches.