Keggin-type polyoxometalate 1 : 1 complexes of Pb(ii) and Bi(iii): experimental, theoretical and luminescence studies

Bi³⁺ and Pb²⁺ can be coordinated by a monolacunary Keggin-type [PW₁₁O₃₉]⁷⁻ anion producing photoluminescent naked [PW₁₁O₃₉Bi]⁴⁻ and [PW₁₁O₃₉Pb]⁵⁻ anions.