Iridium(III) stabilized in oxygen lattices with the perovskite structure Sr2MlrIIIO6(M = Nb, Ta)
Abstract
We have prepared Sr2MIrO6(M = Nb, Ta) with IrIII in the octahedral site of the perovskite lattice. These compounds are the first examples of the +3 oxidation state of iridium in an oxide system. Studies on their structures and magnetic properties suggest that IrIII is stabilized in the octahedral site with the low-spin electronic configuration (t2g)6(eg)0
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