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Type: Artigo de evento
Title: On The Interaction Of Schrock Mo-alkylidene Complexes With The Surface Of Inorganic Oxides
Author: Wolke S.I.
Buffon R.
Abstract: This work describes the reactivity of Schrock-type alkylidenemolybdenum(VI) complexes, Mo(= CHCPhMe2)(= NAr)(O(t)Bu)2, I, or Mo(= CHCPhMe2)(= NAr)[OCMe(CF3)2]2, II, with the surface of silica, silica-alumina and niobia. In situ FT-IR studies suggest that I and II are attached to the surface of silica via a Lewis acid base adduct; on silica-alumina, an OH addition to the Mo=N bond seems to take place. Grafting of I and II causes a decrease in their intrinsic catalytic activity as well as a change in the stereoselectivity of II in ROMP of norbornene. (C) 2000 Elsevier Science B.V.
Rights: fechado
Identifier DOI: 10.1016/S1381-1169(00)00245-4
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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