Synthesis and structure of layered fluorine-containing crystal hydrates based on aquacomplexes of noble metals

Crystal hydrates were synthesized based on aqua-ions of noble metals [M(H2O )(6)]F-3. nH(2)O, where n = 3-8 and M = Ir, Rh. The structure of the result ing crystal hydrates with three aqueous molecules is characterized by the s pace group P (3) over bar, Z = 1 and has a layered form. The positively cha rged layers [M(H2O)(6)]F-2(+) which alter with negatively charged layers of the composition similar to F-. 3H(2)O, are located perpendicular to the c axis. According to X-ray structural and nuclear magnetic resonance data the water molecules and the F- ions in the negatively charged layers are disor dered.