Electronic coupling in a synthetic model of the Cu-cofactor unit of the PM state in cytochrome c oxidase
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A hydroquinone-imidazole-Cu(II) complex reproduces the Tyr-His-Cu unit of cytochrome c oxidase. Laser-induced EPR and DFT reveal a semiquinone radical electronically isolated from Cu(II) by orthogonal orbital alignment. The weak magnetic exchange underscores h... ...
