Well-Defined Single-Site Monohydride Silica-Supported Zirconium from Azazirconacyclopropane

摘要

The silica-supported azazirconacyclopropane equivalent to SiOZr(HNMe2)(eta(2)-NMeCH2)(NMe2) (1) leads exclusively under hydrogenolysis conditions (H-2, 150 degrees C) to the single-site monopodal monohydride silica-supported zirconium species equivalent to SiOZr(HNMe2)(NMe2)(2)H (2). Reactivity studies by contacting compound 2 with ethylene, hydrogen/ethylene, propene, or hydrogen/propene, at a temperature of 200 degrees C revealed alkene hydrogenation.