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Raman Spectroscopic Investigation of Isomeric and Mixed-Valence Heteropolyanions
Volume 36, Number 3 (June 1982) Page 285-289
Kasprzak, Melody Starr; Leroi, G.E.; Crouch, S.R.
Raman spectroscopy has been used to distinguish structural differences between α-12-heteropoly anions and β-12-heteropoly anions in solution. The results are consistent with the Keggin structure for the α-isomers and a modified Keggin structure for the β-isomers. Reduced 12-molybdophosphates and molybdovanadophosphates in solution have also been characterized by Raman spectroscopy; the results are consistent with a retention of the Keggin structure.