Aqueous compatibility of group IIIA monomers and Nb-polyoxoanions†
Abstract
Heteropolyanions, [GaNb18O54]15− and [AlNb18O54]15−, have been synthesized and characterized. These represent the first examples of introducing group III elements into the heteropolyniobate family; achieved via compatible alkaline aqueous chemistry of group IIIA monomers and Nb-polyoxoanions. The open structure of the polyniobate results in expanded coordination of the tetrahedral Ga in aqueous medium.