211577-14-9Relevant academic research and scientific papers
Structures and reactivities of diruthenium dithiolene complexes and triruthenium sulfido clusters derived from a hydrosulfido-bridged diruthenium complex
Kuwata, Shigeki,Andou, Masahiro,Hashizume, Kohjiro,Mizobe, Yasushi,Hidai, Masanobu
, p. 3429 - 3436 (2008/10/08)
The hydrosulfido-bridged diruthenium complex [Cp*RuCl(μ2-SH)2RuClCp*] (1) reacted with an excess of triethylamine to give the cubane-type tetraruthenium sulfido cluster [(Cp*Ru)4-(μ3-S)4] (3) When the reaction was carried out in the presence of alkynes, the dithiolene-bridged diruthenium complexes [(Cp*Ru)2(μ2-η2:η 4-S2C2RR′)] (4) were obtained The dithiolene ring in 4 is almost planar. Treatment of 4 with CO afforded the carbonyl complexes [Cp*Ru(CO)(μ2-η2:η4-S 2C2RR′)RuCp*] (5) containing a bent dithiolene ring. On the other hand the reaction of 1 with an equimolar amount of [RuH2(PPh3)4] resulted in the formation of the triruthenium sulfido cluster [(Cp*Ru)2(μ3-S)2(μ 2-H)RuCl(PPh3)2] (6). Cluster 6 reacted with an excess of NaBH4 in ethanol to give the dihydrido cluster [(Cp*Ru)2(μ3-S)2μ2-H)-RuH(PPh3)2] (7), which was further converted to the dicarbonyl cluster [(Cp*Ru)2(μ3-S)2Ru-(CO) 2(PPh3)] (8) under CO. The detailed structures for [(Cp*Ru)2(μ2-η2:η4-S 2C2HBut)] (4a), [Cp*Ru(CO)(μ2-η2:η4-S 2C2HBut)RuCp*] (5a), and 6-8 have been determined by X-ray crystallography.
