Abstract Syntheses of two homonuclear hydride complexes, viz. hydride-bridged ruthenium dinuclear complex [Ru(η6-C6Me6)(S2C6H4)RuClH(PPh3)2] (3) and dihydride ruthenium dinuclear complex [Ru(η6-C6Me6)(S2C6H4) RuH2(PPh3)2] (4), have been described. Complex 4 was obtained as… Click to show full abstract
Abstract Syntheses of two homonuclear hydride complexes, viz. hydride-bridged ruthenium dinuclear complex [Ru(η6-C6Me6)(S2C6H4)RuClH(PPh3)2] (3) and dihydride ruthenium dinuclear complex [Ru(η6-C6Me6)(S2C6H4) RuH2(PPh3)2] (4), have been described. Complex 4 was obtained as a mixture of cis- and trans-dihydride isomers in a 10:1 M ratio, as indicated by the proton ratio in 1H NMR spectra. The dinuclear complex 4 reacted with carbon monoxide for 30 min and 1 day under similar conditions to produce dicarbonyl complex [Ru(η6-C6Me6)(S2C6H4)Ru(CO)2(PPh3)] (5), and tetracarbonyl complex [Ru2(CO)4(PPh3)2(S2C6H4)] (6), respectively. On the other hand, treatment of 4 with carbon dioxide under ambient conditions was found to produce formic acid.
               
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