Monovacant Wells Dawson anion

Keggin anion [SiWn039] by a monovacant Wells-Dawson anion [a2-P2Wi706i] , has also been reported [48]. 

S.2.2.9 Monovacant Wells-Dawson Anions [a2-P2Wi706i] as Building Units... 

I-P2W17O61] " and [a-2-P2Wi706i], isomers of the monovacant Wells-Dawson anion, and [a-B-PW9034] as building blocks to new lanthanide polyoxometalate materials. 

We are studying the solution and solid state properties of lanthanide complexes of the monovacant Wells-Dawson anions. A firm understanding of the solution and solid state chemistry is a prerequisite for the use of these units as building blocks in the preparation of new molecular based materials. 

The relevant lacunary versions of the Wells-Dawson anions are the two monovacant (oi and 02) and trivacant species shown in Figure 6. 

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