A new boat-like tungstoarsenate functionalized by carboxyethyltin and its catalytic properties†
Abstract
A new polyoxometalate (POM) estertin derivative, {C(NH2)3}Na10K7[(W4O16){Sn(CH2)2COO}4(B-α-AsW9O33)2]·25H2O (1), has been synthesized from K14[As2W19O67(H2O)]·nH2O ({As2W19}) and Cl3SnCH2CH2COOCH3, which exhibits an unusual boat-like structural feature: four [Sn(CH2)2COO]2+ groups surround a center W4O16 cluster and link two [AsW9O33]9− subunits. 1 shows efficient oxidation catalytic activity and can be applied for mimicking enzyme catalysis.