The potassium salt of (η6-3a,7a-azaborindenyl)Cr(CO)3 was prepared in a THF solution at −60 °C. Warming to −40 °C causes the Cr(CO)3 group to undergo haptotropic migration to the five-membered ring. DFT calculations suggest that the preferred intramolecular pathway involves Cr(CO)3 coordination to the boron rather than the nitrogen side of the ligand.
(η的
钾盐6 -3a,7A-azaborindenyl)的Cr(CO)3在THF溶液在-60制备℃。升温至-40°C会使Cr(CO)3基发生触变迁移至五元环。DFT计算表明,优选的分子内途径涉及Cr(CO)3与
硼配位而不是
配体的氮配位。