Abstract

XANES of Mn compounds of known structure and electronic properties [Mn (II), Mn (III), Mn (IV)] is reported. Preedge, Edge and Post-Edge zone are detailed. Dependence on oxidation state, geometry and nuclearity are discussed. Preedge structure is observed and compared with d-orbital splitting obtained from visible NIR spectroscopy. An important Edge shift has been observed with nuclearity and/or geometry change. Post-Edge differences due to stereochemistry are observed for the Mn (III) O6 chromophore.

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