Cesium-sodium ion exchange on hydrated molybdenum bronze and formation of new cesium molybdenum bronze by a low-temperature synthesis route

The cesium-sodium ion exchange on the hydrated molybdenum bronze was investigated, and the proton in the intralayer site was found to prevent the complete ion-exchange of Cs/Na. The hydrated bronze of Cs with a larger ionic radius showed hydration behavior different than the bronzes of other alkali metals. Furthermore, the low-temperature synthesis route from hydrated molybdenum bronzes to alkali-metal molybdenum bronzes was investigated, and it was found that the route led to the formation of a new Cs molybdenum bronze, which was related to the family of blue alkali-metal molybdenum bronze A(0.3)MoO(3). The lattice constants of the bronze were a = 19.362(8), b = 7.567(2), and c = 10.506(4) Angstrom, and beta = 121.07(3)degrees (monoclinic system). (C) 1998 Academic Press.