Citation: J. Hu et al., The solid-state thermal rearrangement of the Dawson anion [P2Mo18O62](6-) into a Keggin-type [PMo12O40](3-)-containing phase and their reactivity in the oxidative dehydrogenation of isobutyraldehyde, J MOL CAT A, 152(1-2), 2000, pp. 141-155