Mixed-valence gold bis(diselenolene) complex turning metallic under pressure

Mixed-Valence Cytochrome Oxidase-Formate Complex

At neutral pH, formate binds to the haem a3 component of cytochrome c oxidase to give a complex that reacts differently from the non-liganded enzyme with reducing agents. Addition of sodium dithionite to the formate complex leads directly to the formation of the fully reduced species, whereas reduction with ascorbate/tetramethylenephenylenediamine can lead to the production of a mixed-valence s...

Metallic and superconducting gallane under high pressure

Guoying Gao,1 Hui Wang,1 Aitor Bergara,2,3,4 Yinwei Li,1 Guangtao Liu,1 and Yanming Ma1,* 1State Key Lab of Superhard Materials, Jilin University, Changchun 130012, P. R. China 2Materia Kondentsatuaren Fisika Saila, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Postakutxatila, 48080 Bilbo, Basque Country, Spain 3Donostia International Physics Center (DIPC), Paseo de Man...

High-pressure spectral studies of mixed valence compounds of antimony.

In Cs(2)SbCl(6) and related compounds antimony appears as Sb(III) and Sb(V) in alternate halide octahedra. The optical spectrum contains "mixed valence" peaks assigned to Sb(III) --> Sb(V) transfer near 18 and 27 kK (cm(-1)). In addition there is a peak near 31 kK assigned to an internal transition on Sb(III) and one near 37 kK assigned to Sb(V), mixed with the absorption edge of the crystal. T...

Turning manure into gold

At a time of global warming, growing environmental concerns and a political situation that is making many industrialised countries critically review their dependency on Middle Eastern oil, the need to develop alternatives to fossil fuels is becoming increasingly important. And this is not just a recurring demand from environmentalists; most industrialised countries signed the Kyoto Treaty, comm...

Signatures of valence fluctuations in CeCu2Si2 under high pressure