Nonstoichiometry in the systems Na2MoO4-MMoO4 (M = Co, Cd), crystal structures of Na3.36Co1.32(MoO4)3, Na3.13Mn1.43(MoO4)3 and Na3.72Cd1.14(MoO4)3, crystal chemistry, compositions and ionic conductivity of alluaudite-type double molybdates and tungstates

Nonstoichiometric double molybdates in the systems Na2MoO4-MMoO4 (M = Co, Cd) were characterized. The crystal chemistry and compositions of the alluaudite-type molybdates and tungstates were considered and mainly 1D character of the sodium-ion transport was shown for them.396