Self-assembly of a lacunary α-Keggin undecatungstophosphate into a three-dimensional network linked by s-block cations

Abstract

The crystal structure of [(CH₃)₄N]₄Na₂H[α-PW₁₁O₃₉]·8H₂O has been determined by using the Weissenberg camera at the BL04B2 beamline of SPring-8, revealing that it contains a disorder-free lacunary [α-PW₁₁O₃₉]⁷⁻ anion with one sodium cation embedded into its lacuna that links the oxometalate building blocks into a one-dimensional chain, which is then woven into a three-dimensional latticework by another Na⁺.