A Functional Mimic of the New Class of Tungstoenzyme, Acetylene Hydratase

摘要

The response of 1 toward oxidative addition reactions with elemental sulfur, CH_3CO_2C≡CCO_2CH_3, and HgCl_2 lends credence to the involvement of 1 in activating acetylene via electron donor-acceptor (EDA) complexation. This model of study suggests that AH, when isolated under aerobic conditions, is reversibly oxidized and becomes inactive. Reduc- tion of the oxidized tungsten center has to occur before catalytic activity can be restored.