Mo1.17 Na0.75 O11 P2 W0.83 Leclaire A, Borel M, Chardon J, Raveau B Journal of Solid State Chemistry 120 (1995) 353-357 A mixed-valent molybdenotungsten monophosphate with a tunnel structure: Nax(Mo,W)2O3(PO4)2 _cod_database_code 1001715 _database_code_amcsd 0013880 7.200 6.369 9.123 90 106.29 90 P2_1/m atom x y z occ W1 .1099 .25 .20000 .58 Mo1 .1099 .25 .20000 .42 W2 .3115 .25 .6345 .25 Mo2 .3115 .25 .6345 .75 P1 .4117 .75 .6106 P2 .0167 .75 .1738 Na1 .481 .594 .959 .1875 Na2 .391 .496 .018 .1875 O1 .864 .25 .128 O2 .132 .25 .394 O3 .149 .556 .184 O4 .144 .25 -.026 O5 .419 .25 .247 O6 .454 .25 .816 O7 .067 .25 .690 O8 .283 .557 .607 O9 .523 .25 .535