Reactions
of α- and β-diimine quinoline aldoximes with
Mn(I) and Re(I) tricarbonyl halides afford quinoline oxime complexes.
Both Mn(I) and Re(I) complexes experience severe geometric strain
due to ligand steric interactions: 6-membered metallocycles exhibit
more pronounced distortions than 5-membered ones, consistent with
density functional theory structural analyses. Such distortions likely
also affect reactivity patterns, as evidenced by Re(I)-induced deoximation
of a quinoline variant containing a CF3-ketoxime.