Citation: Giroult, J P; Goreaud, M; Labbe, P; Raveau, B (1982). K~x~ P~2~ W~2~ O~16~: A Bronze with a Tunnel Structure Built up from P O~4~ Tetrahedra and W O~6~ Octahedra. Journal of Solid State Chemistry, 44, pp. 407-414.
Formula: K0.4 O16 P2 W4
Chemical name:Potassium phosphorus tungsten oxide (.4/2/4/16)