Na2.5 K9 H0.5 (H6 W20 O66) (H2 O)22

H_50.5K₉Na_2.5O₈₈W₂₀

Dickman, M.H.Ozeki, T.Evans, H.T.jr.Jameson, G.B.Rong, C.-Y.Pope, M.T.

Journal of the Chemical Society. Dalton Transactions (2000- ) (2000) 2000, 149-154

a=24.34Å   b=12.49Å   c=17.33Å

α=82.57°   β=101.15°   γ=122.96°