Paul Bernhard

A modified synthesis of ruthenium(II) hexaaqua salts

Abstract An efficient preparation of ruthenium aqua ions starts from the hydrated dioxide. Oxidation by periodate produces ruthenium tetroxide which is reduced by metallic lead to [Ru(H2O)6]2+. Ion exchange and crystallization affords pure [Ru(H2O)6](tos)2 (tos = p-toluenesulphonate) in 70–80% yield.

Ruthenium Aqua Ions—Their Comparison to Ruthenium Ammines

Abstract Similarities and contrasts in the descriptive chemistry of aqua and ammine complexes of mthenium are discussed. The reactivities of the two classes of coordination compounds are compared; both show a remarkable tendency to form complexes with π-accepting ligands, including alkenes and alkynes. The exploitation of Ru(H2O)6 2+ as a versatile preparative reagent is demonstrated.

The rate of the hexa-aquaruthenium (II)/(III)self exchange reaction: 17O and 99Ru n.m.r. spectroscopic studies

The self exchange rate for the Ru(H2O)62+/3+couple determined by 17and 99Ru n.m.r. spectroscopic studies is 44 ± 5dm3mol–1s–1at 25 °C.

A synthetic route to encapsulated Ru compounds: properties of the [Ru(3,6,10,13,16,19-hexa-azabicyclo[6.6.6]icosane)]2+/3+ ions

The synthesis of Ru(sar2+)(sar = 3,6,10,13,16,19-hexa-azabicyclo[6.6.6]icosane) from Ru(DMF)62+(DMF =N,N-dimethylformamide) and sar is described along with its properties and oxidation to Ru(sar)3+ and thence to a RuII monoimine complex.

Synthesis and properties of substituted ruthenium aqua complexes

[Ru(H2O)6]2+ is a versatile reagent for the facile synthesis of a variety of complexes [Ru(H2O)nL6–n]2+(L = heterocyclic N-donor) whose spectroscopic and electrochemical properties are described.