RuH2 dppm 2 Dihydrogen Bonds and Proton Transfer

1 [RuH2(dppm)2], Dihydrogen Bonds and Proton Transfer 

The reaction is reversible and upon allowing the solution to warm to room temperature the dihydride is quantitatively recovered. This reaction is interesting for several reasons (i) it was the first NMR observation of such a dynamic proton transfer (ii) this method allows the observation of unstable species otherwise not detectable (iii) this reaction is specific since only the trans-isomer reacts with phenol. 

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