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A new polyoxometalate of earth adundant elements Co (4) (μ-OH) (H (2) O) (3) (Si (2) W (19) O (70) ) (11-) has been synthesized, characterized and shown to be a water oxidation catalyst. The initial catalytic complex is unstable and slowly undergoes hydrolysis. The hydrolysis products have been isolated and characterized, and their catalytic water oxidation activity is assessed.
Zhu et al. (2011) studied this question.