A new tellurium-substituted Lindqvist-type polyoxoniobate [H2TeNb5O19]5− was synthesized as a tetramethylammonium salt. When irradiated with a Xe lamp, a water–methanol solution of this cluster showed exceptionally high H2-evolution activity suggesting cocatalysis by the hexaniobate cluster and metallic tellurium, both of which are formed as photodecomposition products.
Son, J.-H.; Wang, J.; Osterloh, F.E.; Yu, P.; Casey, W.H. A tellurium-substituted Lindqvist-type polyoxoniobate showing high H2 evolution catalyzed by tellurium nanowires via photodecomposition. Chemical Communications 2014, Advance Article.