Metal Complexes of the Lacunary Heteropolytungstates [B‐α‐PW 9 O 34 ] 9‐ and [α‐P 2 W 15 O 56 ] 12‐

This chapter contains sections titled: Preparation of K10[Zn4(H2O)2(B-α-PW9O34)2].20H2O Preparation of K10[Co4(H2O)2(B-α-PW9O34)2].20H2O Preparation of K7Na3[Cu4(H2O)2(B-α-PW9O34)2].20H2O Preparation of Pure Dodecasodium Pentadecatungstodiphosphate Octadecahydrate,Na12[α-P2W15O56].18H2O Preparation of Na16[Zn4(H2O)2(α-P2W15O56)2] Preparation of Na16[Co4(H2O)2(α-P2W15O56)2] Preparation of Na16[Cu4(H2O)2(α-P2W15O56)2]and Na14Cu[Cu4(H2O)2(α-P2W15O56)2].53H2O