Synthesis, Structural, Magnetic, and Electronic Properties of Cubic CsMnMoO3F3 Oxyfluoride

A powder sample of CsMnMoO 3 F 3 oxyfluoride has been prepared by solid state synthesis. The pyrochlore-related crystal structure of CsMnMoO 3 F 3 has been refined by the Rietveld method at T = 298 K (space group Fd- 3 m, a = 10.59141(4) Å, V = 1188.123(8) Å 3; R B = 3.44%). The stability of the cubic phase has been obtained over the temperature range T = 110–293 K by heat capacity measurements. Magnetic properties have been measured over the range of T = 2–300 K. The electronic structure of CsMnMoO 3 F 3 has been evaluated by X-ray photoelectron spectroscopy. Chemical bonding effects have been discussed for all metal ions using binding energy difference parameters and wide comparison with related oxides and fluorides. The competition between O 2– and F – ions for metal valence electrons has been found.