Hydricity of Ruthenium(II) Hydride Complexes
Despite the fundamental importance of the hydricity of a transition metal
hydride (ΔGºH- for the reaction M–H
=> M+ + H–) in a range of reactions important in
catalysis and solar energy storage, ours (J. Am. Chem. Soc.
2009, 131, 2794) are the only values reported for water
solvent, and there has been no basis for comparison of these with the wider
range already determined for acetonitrile solvent, in particular. We have
used a variety of approaches to determine hydricity values in acetonitrile
of Ru(II) hydride complexes previously studied in water. Comparison of the
hydricity values for acetonitrile and water reveals a flattening or
compression of the hydricity range upon transferring the hydride complexes
to water.
Last Modified: September 13, 2012
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