10. Spin-State Switching in Solution

  1. Matthew P. Shores,
  2. Christina M. Klug and
  3. Stephanie R. Fiedler

Published Online: 18 JAN 2013

DOI: 10.1002/9781118519301.ch10

Spin-Crossover Materials: Properties and Applications

Spin-Crossover Materials: Properties and Applications

How to Cite

Shores, M. P., Klug, C. M. and Fiedler, S. R. (2013) Spin-State Switching in Solution, in Spin-Crossover Materials: Properties and Applications (ed M. A. HALCROW), John Wiley & Sons Ltd, Oxford, UK. doi: 10.1002/9781118519301.ch10

Editor Information

  1. School of Chemistry, University of Leeds, UK

Author Information

  1. Department of Chemistry, Colorado State University, USA

Publication History

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

ISBN Information

Print ISBN: 9781119998679

Online ISBN: 9781118519301



  • electronic absorption spectroscopy;
  • isomerization;
  • ligation changes;
  • metal centers;
  • NMR characterization;
  • solution investigations;
  • spin-crossover (SC);
  • spin-state switching;
  • SQUID Magnetometry


This chapter focuses on solution studies of systems where spin events are localized to single, isolated metal centers. It summarizes the kinds of information, such as spin-crossover (SC), and methods available for solution-phase spin switching investigations. The methods include NMR characterization, SQUID magnetometry, and electronic absorption spectroscopy. The chapter surveys recent literature, focusing on effects of solvent and ions, ligand distortions and complex isomerizations, and noncoordinating anion-cation interactions on spin-state switching behavior. It finally highlights several challenges and opportunities of spin-state switching in solution. Solution investigations presented in the chapter emphasize chemical-interaction-based spin-state switching. Spin-state switching in solution is sensitive to small environmental changes. Extensive efforts have been devoted to exploring the influence of solvent, anions and/or salts on SC properties, and some useful structure-property correlations have been obtained.