[Remath imageS22]4−, a Highly Symmetrical Metal-Sulfur Cluster with Six Smath image Ligands


  • Dedicated to Professor Rolf Appel on the occasion of his 65th birthday


original image

Re-S compounds should be even better catalysts for the desulfurization of crude oil than the long proven Mo[BOND]S compounds. The first step in the development of a catalyst, the synthesis of a discrete Re[BOND]S cluster anion, has now been accomplished. Reaction of a perrhenate solution reduced with NH2OH·HCl with an aqueous polysulfide solution yielded an NH4-salt of the cluster anion [Re4S22]4−1.