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Ligand Redox Non-Innocence in Transition-Metal sigma-Alkynyl and Related Complexes

Schauer, PA; Low, PJ

Authors

PA Schauer

PJ Low



Abstract

Transition-metal σ-alkynyl complexes are valuable functional materials that have found application as sructural units in the assembly of polymetallic arrays and large molecular structures, reagents for the transfer, oligomerisation or functionalisation of alkynes, magnetic or optical materials and putative components for use in a future molecular-based electronics platform. Many σ-alkynyl complexes are redox-active, undergoing facile oxidation (reduction) at moderate potentials to generate radical cations (anions) in which the charge and spin density can be tuned from being largely metal-centred to alkynyl ligand-centred by variation of the nature of the metal, supporting ligands and alkynyl substituents. This review summarises the diverse chemical behaviour of metal-supported σ-alkynyl radicals, and some selected closely related systems, which can often be rationalised in terms of the distribution of electron-spin density over the metal–alkynyl scaffold.

Citation

Schauer, P., & Low, P. (2012). Ligand Redox Non-Innocence in Transition-Metal sigma-Alkynyl and Related Complexes. European Journal of Inorganic Chemistry, 2012(3), 390-411. https://doi.org/10.1002/ejic.201100995

Journal Article Type Article
Publication Date Jan 16, 2012
Deposit Date Aug 13, 2013
Publicly Available Date Mar 28, 2024
Journal European Journal of Inorganic Chemistry
Print ISSN 1434-1948
Electronic ISSN 1099-0682
Publisher Wiley-VCH Verlag
Peer Reviewed Peer Reviewed
Volume 2012
Issue 3
Pages 390-411
DOI https://doi.org/10.1002/ejic.201100995
Keywords Redox chemistry, Radical reactions, Ligand effects, Alkyne ligands, ­Ruthenium.