New oxides showing an intense orange color based on Fe3+ in trigonal-bipyramidal coordination

Inorg Chem. 2011 Jul 4;50(13):5858-60. doi: 10.1021/ic200535c. Epub 2011 May 31.

Abstract

Hexagonal YIn(1-x)Fe(x)O(3) phases have been prepared and characterized. The coordination for the In/Fe site in this structure is trigonal-bipyramidal. The colors of the phases change from yellow to orange to dark red with increasing Fe content. Magnetic measurements confirm high-spin Fe(3+) for all phases.