Langmuir, 13 (6), 1545 -1551, 1997. la960679d S0743-7463(96)00679-8

Copyright © 1997 American Chemical Society

Characterization of Silica-Supported Vanadium(V) Complexes Derived from Molecular Precursors and Their Ligand Exchange Reactions

Gordon L. Rice and Susannah L. Scott*

Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5

Received July 10, 1996

In Final Form: November 13, 1996

Abstract:

The reaction of O=VX₃, where X is Cl or OⁱPr, with the hydroxyl-terminated silica surface gives the well-defined surface complexes SiOVOX₂. These complexes have been characterized by ⁵¹V magic angle spinning and ¹³C cross polarization magic angle spinning NMR spectroscopy and infrared spectroscopy. The surface complexes undergo clean ligand replacement reactions with alcohols, similar to the reactions of analogous molecular vanadium complexes and relevant to the understanding of mechanisms in catalysis.

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