Hydridoruthenium clusters

Table 3.7 Hydrogenation of arenes with water-soluble hydridoruthenium-clusters... 

Trinuclear hydridoruthenium cluster is also effective for the desulfurization of dibenzothiophene, though the reaction proceeds quite slowly (Eq. 3.32) [123],... 

Other biphasic reductions using molecular hydrogen or an H-donor molecule include the selective hydrogenation of dienes to monoenes by K3[HCo(CN)5] (4) and reduction of arenes by hydridoruthenium clusters, such as [H4Ru4( -C6H6)4][BF4]2 (106). These reactions represent potentially important chemical transformations however, owing to catalyst instability or low productivity they have not been developed to practical biphasic processes. 

Apart from hydridoruthenium carbonyl cluster compounds (see Sections 45.10.3.3 and 45.10.4) the only Ru° hydride complexes are the deep brown [RuH(NO)(PR3)3] (R3 = Ph3, Ph2Me, Ph2Pr , Ph2Cy) w hich are fully discussed in Section 45.5.1.2. 

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