Abstract
A new silver aluminium trimanganese pentamolybdate {silver(I) trimanganese(II) aluminium pentakis[tetraoxidomolybdate(VI)]}, AgMn3II-((Mn0,26Al0,74)-Al-III)(MoO4)(5), has been synthesized using solid-state methods. The structure is composed of M2O10 dimers, M3O14 (M = Mn, Al) trimers and MoO4 tetrahedra sharing corners and forming three types of layers A, B and B'. The sequence of the constituting layers is A-BB'-A-BB', with B' obtained from B by inversion symmetry, forming a three-dimensional structure with large channels in which the positionally disordered and partially occupied Ag + ions reside. The Mn-III and Al-III atoms share the same site, M. AgMn3II((Mn0,26Al0,74)-Al-III)(MoO4)(5) is isotypic with the NaMg3X(MoO4)(5) (X = Al, In) family and with NaFe4(MoO4)(5). A comparative structural description is provided between the structure of the title compound and those of related phases containing dimers, trimers and tetramers.