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Photoredox Reaction of [Cr(CO)₅I] induced by Ligand to Metal Charge Transfer Excitation

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Kunkely, Horst ; Vogler, Arnd
Date of publication of this fulltext: 15 Mar 2010 06:21


The complex [CrI(CO)5I] is characterized by a long-wavelength absorption at λmax 638 nm. This band is assigned to a ligand to metal charge transfer (LMCT) transition from iodide (π) to CrI (t2g). Upon LMCT excitation the complex undergoes a photoredox reaction with a quantum yield φ 0.01 according to the equation: [CrI(CO)5I] + CH3CN → [Cr0(CO)5CH3CN] + I/2 I2. This reaction takes place also thermally.

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