15694-44-7Relevant articles and documents
Syntheses and crystal and molecular structures of hexaaquaruthenium(II) p-toluenesulfonate and hexaaquaruthenium(III) p-toluenesulfonate, [Ru(H2O)6](C7H7SO3) 2 and [Ru(H2O)6](C7H7SO3) 3·3H2O
Bernhard, Paul,Bürgi, Hans-Beat,Hauser, Jürg,Lehmann, Hans,Ludi, Andreas
, p. 3936 - 3941 (1982)
Crystals of Ru(H2O)6(tos)2 (II) (tos- is p-toluenesulfonate) were grown from aqueous Ru(H2O)62+ solutions obtained by reduction of RuO4 solutions with metallic lead. Crystals of Ru(H2O)6(tos)3·3H2O (III) were grown from aqueous Ru(H2O)63+ obtained by oxidation of a Ru(H2O)62+ solution with O2. For II the space group is P1 with cell parameters a = 6.138 (1) A?, b = 7.287 (2) A?, c = 12.423 (4) A?, α = 92.22 (2)°, β= 94.82 (2)°, γ = 107.13 (2)°, and Z = 1. For III the space group is C2/c with lattice constants a = 25.466 (7) A?, b = 7.235 (4) A?, c = 35.113 (8) A?, β= 93.97 (2)°, and Z = 8. The structure of II was refined to R = 3.3% for 2302 reflections with Fo > σ(Fo) the structure of III, to R = 5.2% for 2989 reflections with Fo > σ(Fo). In both structures Ru(H2O)6 octahedra are linked by hydrogen bonds to the SO3 groups of the anion, the O-H···O distances ranging from ～2.5 to 3.0 A?. The average metal-oxygen distance is 2.122 (16) A? for Ru(II)-OH2 and 2.029 (7) A? for Ru(III)-OH2. The effect of the change in bond length on the rate of the Ru(H2O)63+/2+ self-exchange reaction is discussed.
