A new organometallic heteropolytungstate related to [Sb2W22O74(OH)2]12–: synthesis and structural characterisation of the bis-{Ru(p-cymene)}2+-containing anion [Sb2W20O70{Ru(p-cymene)}2]10–

The easy synthesis of [Sb2W20O70{Ru(p-cymene)}2](10-) by the reaction between the organometallic precursor [Ru(p-cymene)Cl2]2 and [Sb2W20O70]14-, formed in situ, confirms the importance of the organometallic route to well defined ruthenium(+II)-substituted heteropolytungstates.