Study published as a VIP article in the journal Angewandte Chemie.
The peculiar reactivity of [CpMn(CO)2(N2)] (Cp=η5-cyclopentadienyl) is revisited to shed light on the proposed nucleophilic attack of PhLi on its N2 ligand. Our study shows that such reactivity doesn’t happen while the attack of the carbanion on CO is favored, albeit giving rise to a very labile compound. The latter decomposes above −20 °C into a N2-free phenyl manganate that was erroneously proposed to be an anionic phenyldiazenido complex.
These findings offer new perspectives for the catalytic transformation of diazote into high-value-added compounds.