Abstract
Hydride hydrogen atom abstraction from the 18-electron compounds CpFe(CO)LH (L PMe 2 Ph, PPh 3) by the trityl radical results in formation of the 17-electron species CpFe(CO)(PMe 2Ph) and (CpFe(CO)PPh 3). These compounds are not stable, however, undergoing rearrangement and coupling reactions to give, ultimately, the 18-electron compounds Cp 2Fe 2(CO) 3PMe 2Ph and Cp 2Fe 2(CO) 3PPh 3 respectively. The transient, 17-electron species may be trapped by organic halides RX, which transfer halogen atoms to give the compounds CpFe(CO)LX.
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