Popis: |
Potassium molybdo-perrhenate is monoclinic. Unit cell parameters are a = 10.490(10) A, b = 6.059(5) A, c = 7.892(5) A, β = 116.28(5)° with Z = 2. The space group is C2/m. This structure is characterized by a random distribution of the Mo and Re atoms on the tetrahedral cation site. The coordination formula (1) is: { II + IV + IV + II I + I + II + II + II + II I + II + I ( I ) + II + I + I ( I ) + II + I + I ( I ) + I + I + I K [ l ¯ ] K 2 [ m ] M e 2 [ m ] O 2 [ m ] O 2 [ m ] O 4 [ l ] } . The final R value is 0.064. |