Photochemistry of CpMn(CO)<sub>3</sub> and Related Derivatives: Spectroscopic Observation of Singlet and Triplet CpMn(CO)<sub>2</sub>
- Carl R. Kemnitz (2130001)
- Eric S. Ball (2129998)
- Robert J. McMahon (752679)
DOIAbstract
We report novel photochemistry derived from (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)Mn(CO)<sub>3</sub> (<b>1a</b>), (η<sup>5</sup>-C<sub>5</sub>H<sub>4</sub>Me)Mn(CO)<sub>3</sub> (<b>1b</b>), (η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)Mn(CO)<sub>3</sub> (<b>1c</b>), and (η<sup>5</sup>-indenyl)Mn(CO)<sub>3</sub> (<b>1d</b>). Photolysis (>261 nm, 1 h) of the parent tricarbonyl (<b>1a</b>–<b>d</b>), matrix isolated in argon at 10 K, yields two species: the expected singlet dicarbonyl <sup>1</sup>(η<sup>5</sup>-L)Mn(CO)<sub>2</sub> (<sup><b>1</b></sup><b>2a</b>–<b>d</b>) and an additional compound assigned as the triplet dicarbonyl <sup>3</sup>(η<sup>5</sup>-L)Mn(CO)<sub>2</sub> (<sup><b>3</b></sup><b>2a</b>–<b>d</b>). Density fun...
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