Journal of the Chemical Society A Inorganic Physical Theoretical · 1968 · 54 citations · 0 references
Natural SciencesChemistryMaterials ScienceCrystal StructureInorganic ChemistrySolid-state ChemistryCrystal ChemistryCrystal LatticeCrystal SymmetryCrystallographySpace GroupsStructure DeterminationCrystal Structure DeterminationCrystal Structure RefinementCrystal Symmetry AnalysisInfinite ChainsMonoclinic SystemMonoclinic Unit CellsUnit Cell DeterminationUnit Cell Symmetry
Dipotassium trimolybdate, K2Mo3O10, crystallises in the monoclinic system, space group C2/c, with unit cell dimensions a= 13·902, b= 7·914, c= 8·845 Å, β= 98°50′. Its structure, determined by three-dimensional Patterson and Fourier syntheses and refined by least squares, contains distorted MoO6 octahedra and MoO5 square pyramids which share edges to form infinite chains parallel to the c axis. These chains are held together by potassium ions occupying irregular ten-co-ordinate interchain positions. The analogous trimolybdates, Rb2Mo3O10 and Cs2Mo3O10, have been shown to be isostructural and preliminary data for the previously unreported Ag2Mo3O10 is given.