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New molecular architectures containing low-valent cluster centres with di- and trimetalated 2-vinylpyrazine ligands: Synthesis and molecular structures of Ru5(CO)155-C4H2N2CHCH)(μ-H)2 and Ru8(CO)247-C4H2N2CHC)(μ-H)3

Research output: Contribution to journalArticle

Md Monir Hossain, Nahid Akter, Shishir Ghosh, Vladimir N. Nesterov, Michael G. Richmond, Graeme Hogarth, Shariff E. Kabir

Original languageEnglish
Pages (from-to)21025-21030
Number of pages6
JournalRSC Advances
Volume9
Issue number36
DOIs
Published1 Jan 2019

King's Authors

Abstract

Reaction of 2-vinylpyrazine with Ru3(CO)12 results in multiple C-H bond activations to afford penta- and octa-ruthenium clusters, Ru5(CO)155-C4H2N2CHCH)(μ-H)2 (2) and Ru8(CO)247-C4H2N2CHC)(μ-H)3 (3), in which a Ru3 sub-unit is linked to Ru2 and Ru5 centres via di- and tri-metalated 2-vinylpyrazine ligands, exhibiting novel coordination modes including the loss of ring aromaticity in 2. The bonding of 2 and the mechanism for the fluxional behaviour of the hydrides have been examined by electronic structure calculations.

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