The relaxivities of two gadolinium heteropoly complexes β K 17 [(GdO) 3(SiW 9O 34 ) 2]·20H 2O and K 13 [Gd(GeW 11 O 39 ) 2]·20H 2O in aqueous solution have been measured. Their relaxivities are 16.27 and 16.41 mmol...
With Bu4NBr as phase-transfer agent, the monovacant polyoxometalates α-Xn+W11O(12-n)-39(X=P, Si, B, Ga) reacted in acetonitrile with electrophilic C6H5P(S)Cl2 to yield hybrid organic-inorganic species [C6H5P(S...