Sc-O-Fe(III) not Sc-O-Fe(IV)

What is it about?

The oxidation state of iron in the Sc-capped iron-oxygen complex should be revised. Unlike originally assumed, through molecular modelling it is shown here that the oxidation state is clearly Fe(III), as already anticipated based on the Fe-O and Fe-N distances. Moreover, the spin state is determined to be high-spin. Much remains to be discovered however about this intriguing complex.

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