Halide abstraction as a route to cationic transition-metal complexes containing two-coordinate gallium and indium ligand systems

Bunn, Natalie R., Aldridge, Simon, Kays, Deborah L. ORCID: https://orcid.org/0000-0002-4616-6001, Coombs, Natalie D., Rossin, Andrea ORCID: https://orcid.org/0000-0002-1283-2803, Willock, David J. ORCID: https://orcid.org/0000-0002-8893-1090, Day, Joanna K., Jones, Cameron and Ooi, Li-ling 2005. Halide abstraction as a route to cationic transition-metal complexes containing two-coordinate gallium and indium ligand systems. Organometallics 24 (24) , pp. 5891-5900. 10.1021/om0506318

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Abstract

Halide abstraction chemistry offers a viable synthetic route to the cationic two-coordinate complexes [{Cp*Fe(CO)2}2(μ-E)]+ (7, E = Ga; 8, E = In) featuring linear bridging gallium or indium atoms. Structural, spectroscopic, and computational studies undertaken on 7 are consistent with appreciable Fe−Ga π-bonding character; in contrast, the indium-bridged complex 8 is shown to feature a much smaller π component to the metal−ligand interaction. Analogous reactions utilizing the supermesityl-substituted gallyl or indyl precursors of the type (η5-C5R5)Fe(CO)2E(Mes*)X, on the other hand, lead to the synthesis of halide-bridged species of the type [{(η5-C5R5)Fe(CO)2E(Mes*)}2(μ-X)]+, presumably by trapping of the highly electrophilic putative cationic diyl complex [(η5-C5R5)Fe(CO)2E(Mes*)]+.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Publisher:	American Chemical Society
ISSN:	0276-7333
Last Modified:	12 Jul 2024 08:45
URI:	https://orca.cardiff.ac.uk/id/eprint/170297

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