Strong agostic-type interactions in ruthenium benzylidene complexes containing 7-azaindole based scorpionate ligands

Nikolaos Tsoureas, Joshua Nunn, Thomas Bevis, Mairi F. Haddow, Alex Hamilton, Gareth R. Owen

Research output: Contribution to journalArticle (Academic Journal)peer-review

19 Citations (Scopus)


The complexes [Ru(Tai)Cl{=C(H)Ph}(PCy3)] (4) and [Ru((Ph)Bai)Cl{=C(H)Ph}(PCy3)] (5) [where Tai = HB(7-azaindolyl)(3) and (Ph)Bai = Ph(H)B(7-azaindolyl)(2)] have been prepared and structurally characterised. The borohydride unit is located in the coordination site trans to the chloride ligand in both complexes. The degree of interaction between the borohydride group and the metal centre was found to be significantly large in both cases. Thermolysis reactions involving complex 4 led to a dehydrogenation reaction forming [Ru(Tai)Cl{PCy2(eta(2)-C6H9)}] (6) where the benzylidene group acts as a hydrogen acceptor.

Original languageEnglish
Pages (from-to)951-958
Number of pages8
JournalDalton Transactions
Issue number4
Publication statusPublished - 2011

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