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 i nvestigated, and the proton in the intralayer site was found to preven t the complete ion-exchange of Cs/Na. The hydrated bronze of Cs with a larger ionic radius showed hydration behavior different than the bron zes of other alkali metals. Furthermore, the low-temperature synthesis route from hydrated molybdenum bronzes to alkali-metal molybdenum bro nzes was investigated, and it was found that the route led to the form ation of a new Cs molybdenum bronze, which was related to the family o f blue alkali-metal molybdenum bronze A(0.3)MoO(3). The lattice consta nts 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 Ac ademic Press.