Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, UK.
Angew Chem Int Ed Engl. 2016 Jun 6;55(24):6951-3. doi: 10.1002/anie.201601758. Epub 2016 Apr 13.
Reaction of a zinc/zirconium heterobimetallic complex with 1,5-cyclooctadiene (1,5-COD) results in slow isomerization to 1,3-cyclooctadiene (1,3-COD), along with the formation of a new complex that includes a cyclooctyne ligand bridging two metal centers. While analogous magnesium/zirconium and aluminum/zirconium heterobimetallic complexes are competent for the catalytic isomerization of 1,5-COD to 1,3-COD, only in the case of the zinc species is the cyclooctyne adduct observed.
锌/锆杂双金属配合物与 1,5-环辛二烯(1,5-COD)反应,缓慢异构化为 1,3-环辛二烯(1,3-COD),同时形成一种新的配合物,其中包括一个桥连两个金属中心的环辛炔配体。虽然类似的镁/锆和铝/锆杂双金属配合物能够催化 1,5-COD 异构化为 1,3-COD,但只有锌物种观察到环辛炔加合物。