Tetrahedral {HPO3} and {WO4} group simultaneously directing tri-Tb(III)-containing antimonotungstate and its photoluminescence properties

Trisubstituted 4f- and 4d tungstoantimonates as artificial phosphoesterases for nerve agent degradation

“…{M 3 (HPO 3 )Sb 3 W 28 } were prepared employing a double-template synthetic approach 17 starting from the literature known trilacunary tungstoantimonate precursor Na 9 [ B -SbW 9 O 33 ]·19.5 H 2 O {SbW 9 } 18 that was chosen based on its previously reported affinity towards 3d- and 4f electrophiles 19 and the presence of a lone-pair preventing in situ formation of a fully closed Keggin sphere therewith allowing the generation of more complex POM-architectures. 20 To a stirred suspension of {SbW 9 }, Na 2 WO 4 and KCl in a 2 : 1 mixture of sodium acetate buffer ([2 M], pH = 5.5) and water, phosphorous acid and the corresponding Lewis-acid metal salt were added followed by stirring at 25 °C for 30 min and subsequent heating at 90 °C for an hour ( Scheme 1 ).…”