Hexaniobate nanoscrolls (NS-H4Nb6O17) and acid-restacked calcium niobate nanosheets (R-HCa2Nb3O10) were compared as oxide semiconductors in photocatalytic assemblies for H2 production using ethylenediaminetetraacetic acid (EDTA) as a sacrificial electron donor and platinum (Pt) nanoparticles as catalysts. Ru(bpy)3 and Ru(bpy)2(4,4′-(PO3H2)2bpy) (bpy ) 2,2′-bipyridine) were employed as visible l...

MCSCF-MRMP2 and DFT calculations were performed in order to analyze the stability and geometrical parameters of some possible intermediates for the reactions Ru2+ + H2O2 and Ru(H2O)6 + H2O2. At MCSCF-MRMP2 level of calculation, the stability predicted for the RuO(H2O)5 suggests an energetic preference of the reaction Ru(H2O)6 + H2O2 toward the products involving this high-valence intermediate, ...

The crystal structure of the dinuclear arene ruthenium title complex, [Ru2(C6H5OS)(C7H7S)2(C10H14)2]BF4, shows the two Ru(II) atoms to be bridged by two benzyl-thio-pheno-late units and one 4-hy-droxy-thio-pheno-late unit, with the remaining three coordination sites of each Ru(II) atom being occupied by p-cymene ligands, completing the typical piano-stool coordination geometry. The BF4 (-) coun...

A series of RuII complexes stabilized with the pentapyridyl ligand Py5Me2 (Py5Me2 = 2,6-bis(1,1-bis(2-pyridyl)ethyl)pyridine) and with an axial X ligand (X = Cl-, H2O, N3-, MeCN) were prepared and characterized in the solid state and in non-aqueous solution. The cyclic voltammograms of these complexes in MeCN reflect a reversible substitution of the axial X ligand with MeCN. Irreversible ligand...

Bulk-sensitive high-resolution Ce 4f spectra have been obtained from 3d→4f resonance photoemission measurements on La1−xCexAl2 and La1−xCexRu2 for x = 0.0, 0.04, 1.0. The 4f spectra of low-Kondo-temperature (TK) (La,Ce)Al2 are essentially identical except for a slight increase of the Kondo peak with x, which is consistent with a known increase of TK with x. In contrast, the 4f spectra of highTK...

Cationic tetranuclear arene ruthenium complexes of the general formula [Ru4(p-cymene)4(N N)2(dhnq)2] comprising rectangular structures are obtained in methanol from the reaction of the dinuclear arene ruthenium precursor [Ru2(p-cymene)2(dhnq)2Cl2] (dhnq = 5,8-dihydroxy-1,4-naphthoquinonato) with pyrazine or bipyridine linkers [N N = pyrazine, 1; 4,4 -bipyridine, 2; 1,2-bis(4-pyridyl)ethylene, 3...