Open AccessHydrogen Activation by Benzene-Ruthenium Complexes in Aqueous Solution: Synthesis, Molecular Structure, and Intercalation of the Cluster Cation [{C₆H₆)₄Ru₄H₄]²⁺
Author(s) -
Ulf Bodensieck,
Götz Meister,
Gerd Rheinwald,
H. Stoeckli-Evans,
Georg SüßFink
Publication year - 1993
Publication title -
chimia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.387
H-Index - 55
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/chimia.1993.189
Subject(s) - dication , chemistry , ruthenium , hexafluorophosphate , aqueous solution , crystal structure , inorganic chemistry , crystallography , cationic polymerization , intercalation (chemistry) , molecule , medicinal chemistry , polymer chemistry , catalysis , ionic liquid , organic chemistry
The hydrogenation of the aqua complex [(C6H6)Ru(H2O)3]2+, prepared in situ by hydrolysis of (C6H6)2Ru2Cl4 in water, was found to lead to the tetranuclear cluster dication [(C6H6)4Ru4H4]2+ (1) which crystallizes as the dichloride from the aqueous solution. In the presence of acetate ions, however, the reaction yields the dinuclear cations [(C6H6)2Ru2H(OOCCH3)X]+ (X=OH: 2, X=Cl: 3) which crystallize as the hexafluorophosphate salts. The X-ray crystal-structure analysis of [(C6H6)4Ru4H4]Cl2 reveals the cluster dication 1 to consist of a tetrahedral ruthenium framework; the four hydrido ligands are presumably coordinated to three faces and to one edge of the Ru4 tetrahedron. The cationic complexes 1 and 2 have been found to intercalate in sodium hectorite.