The silica-supported azazirconacyclopropane ≡SiOZr(HNMe2)(η(2)-NMeCH2)(NMe2) (1) leads exclusively under hydrogenolysis conditions (H2, 150 °C) to the single-site monopodal monohydride silica-supported zirconium species ≡SiOZr(HNMe2)(NMe2)2H (2). Reactivity studies by contacting compound 2 with ethylene, hydrogen/ethylene, propene, or hydrogen/propene, at a temperature of 200 °C revealed alkene hydrogenation.
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Well-defined single-site monohydride silica-supported zirconium from azazirconacyclopropane.
Chemistry
March 2015
King Abdullah University of Science & Technology, KAUST Catalysis Center (KCC), 23955-6900 Thuwal (Saudi Arabia).
The silica-supported azazirconacyclopropane ≡SiOZr(HNMe2)(η(2)-NMeCH2)(NMe2) (1) leads exclusively under hydrogenolysis conditions (H2, 150 °C) to the single-site monopodal monohydride silica-supported zirconium species ≡SiOZr(HNMe2)(NMe2)2H (2). Reactivity studies by contacting compound 2 with ethylene, hydrogen/ethylene, propene, or hydrogen/propene, at a temperature of 200 °C revealed alkene hydrogenation.
View Article and Find Full Text PDFMethane activation by silica-supported Zr(IV) hydrides: the dihydride [(triple bond)SiO)2ZrH2] is much faster than the monohydride [(triple bond)SiO)3ZrH].
Chem Commun (Camb)
August 2004
Laboratoire de Chimie Organometallique de Surface, UMR9986-CNRS CPE, 43 Boulevard du 11 Novembre 1918, F-69616 Villeurbanne, France.
The silica-supported Zr(iv) dihydride [(triple bond)SiO)2ZrH2] reacts quickly and completely with methane to yield [(triple bond)SiO)2ZrMe2] through the intermediate [(triple bond)SiO)2ZrHMe], while its monohydride analogue [(triple bond)SiO)3ZrH] yields the monomethylated product [(triple bond)SiO)3ZrMe] slowly and incompletely.
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