Chemistry of ruthenium σ-borane complex, [Cp∗RuCO(μ-H)BH2L] (Cp∗ = η5-C5Me5; L = C7H4NS2) with terminal and internal alkynes: structural characterization of vinyl hydroborate and vinyl complexes of ruthenium

Saha, Koushik ; Joseph, Benson ; Borthakur, Rosmita ; Ramalakshmi, Rongala ; Roisnel, Thierry ; Ghosh, Sundargopal (2017) Chemistry of ruthenium σ-borane complex, [Cp∗RuCO(μ-H)BH2L] (Cp∗ = η5-C5Me5; L = C7H4NS2) with terminal and internal alkynes: structural characterization of vinyl hydroborate and vinyl complexes of ruthenium Polyhedron, 125 . pp. 246-252. ISSN 0277-5387

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.poly.2017.01.003

Abstract

The chemistry of ruthenium–borane complex, [Cp∗RuCO(μ-H)BH2L] (Cp∗ = η5-C5Me5; L = C7H4NS2), 1 with various alkynes has been explored. Photolysis of 1 with alkynyl-Grignard, [HC≡CMgBr] in toluene led to the isolation of vinyl hydroborate complex [Cp∗Ru(μ-H)BH{HC=CH2}L], 2a as a sole product. Compound 2a can be viewed as a ruthenium–borate complex with an ethylene moiety. Further, the chemistry of 1 with various internal and terminal alkynes has been performed in photolytic conditions. Photolysis of 1 with [RC≡CR] (R = CO2Me) yielded vinyl hydroborate complex [Cp∗Ru(μ-H)BCl{RC=CR}L], 2b. Terminal alkynes [HC≡CR] (R = Ph or CO2Me) under the same reaction conditions led to the isolation of metal vinyl complexes [Cp∗Ru(CO)(C2HR)(L)], 3a and 3b (3a: R = Ph; 3b: R = CO2Me). In addition, DFT calculations were carried out to analyze the bonding and electronic structures of these new compounds.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Ruthenium; Alkyne; Vinyl; Hydroboration; Borane
ID Code:108946
Deposited On:31 Jan 2018 12:22
Last Modified:31 Jan 2018 12:22

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