A new combination of donor and acceptor: bis(η⁶-benzene)chromium and hexafluorobenzene form a charge-transfer stacked crystal

Abstract

Bis(η⁶-benzene)chromium reacts with hexafluorobenzene to yield a red charge-transfer complex [Cr(η⁶-C₆H₆)₂•C₆F₆] which contains stacks of alternating donor and acceptor molecules with close inter- and intrastack contacts; in addition to the charge-transfer complex, formation of [Cr(η⁶-C₆H₆)₂]⁺ is demonstrated by EPR and IR spectroscopy.

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