Dimethylsulfoxidepentaammineruthenium(II) Hexafluorophosphate. A Spectroscopic Study

Abstract
The infrared spectra of [Ru(NH3)5(CH3)2SO]X2, [Ru(ND3)5(CH3)2SO]X2, [Ru(NH3)5(CD3)2SO]X2, and [Ru(ND3)5(CD3)2SO]X2 where X = PF6 have been examined in detail between 4000–200 cm−1. These data, together with the 1H n.m.r. spectrum of [Ru(NH3)5(CH3)2SO](PF6)2 in D2O, suggest that dimethyl sulfoxide is bonded to ruthenium via the sulfur atom in spite of the fact that the νso frequency is not very different from that observed for uncoordinated dimethyl sulfoxide.

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