A Mo(V) Monophosphate with an Intersecting Tunnel Structure: K2Mo2P2O11

Molybdenum (V) Phosphates: Structural Relationships and Classification

“…In K20(M00)2(P04)2 [17], the octahedral unit M02O11 is built up of two ΜοΟό octahedra sharing one corner (Fig. 16a).…”

“…Recently, eighteen pentavalent molybdenum [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] phosphates corresponding to thirteen different mixed frameworks and one mixed valent molybdenum V/VI phosphate [18] have been synthesized at high temperature and their structure has been determined from single crystals. Comparisons of all the molybdenum phosphates involving pentavalent molybdenum have shown that, despite the original feature of the host lattices, they all exhibit many structural relationships and Table I We present here a review and a classification of the phosphates involving molybdenum V.…”

A Molybdenotungsten Monophosphate with an Opened Structure K6.6Mo2.36W3.64O15(PO4)4

“…The growth was carried out in two steps: first, H(NH 4 ) 2 PO 4 , K 2 CO 3 , WO 3 , and MoO 3 were mixed in an agate mortar in adequate ratios according to the composition K 2 Mo 0.83 WPO 9 and heated at 700 K in a platinum crucible to decompose the ammonium phosphate and carbonate. In a second step the resulting mixture was then added to the required amount of molybdenum (0.17 mole), sealed in an evacuated silica ampoule, heated for eighteen hours at 853 K, cooled at 12 K per hour to 730 K, and then the sample was quenched to room temperature.…”

Structure of Tl2Mo2P2O11

“…The synthesis and structure determination of the title compound were undertaken in order to test the possible replacement of potassium by thallium in the phase K2Mo2P2OI~ (Gueho, Borel, Grandin, Leclaire & Raveau, 1993). The crystals of the new phase TI2Mo2P20~ were synthesized from the nominal composition T12Mo2P20~ heated at 1123 K for one day in an evacuated silica ampoule and cooled at 2 K h-~ to 923 K. Finally, the sample was quenched to room temperature and brown crystals were extracted.…”