The electronic structure and photochemistry of transition metal thionitrosyl complexes

A review of the electronic structure of transition metal thionitrosyl complexes is given. The optical spectra and EPR spectra of the complexes are discussed along with the results of theoretical calculations of the electronic structure including geometry optimizations. The sigma. donor and pi donor/acceptor properties of the NS ligand are compared with the isovalent NO ligand. The photochemistry of thionitrosyl complexes is presented. The reactivity of the photoreleased NS radical in solution is discussed. (C) 2015 Elsevier B.V. All rights reserved.