Lewis-acid behaviour of neutral and cationic fluoridotungsten(V) and (VI) complexes

Thumbnail Image
Date
2020
Authors
Turnbull, Douglas
University of Lethbridge. Faculty of Arts and Science
Journal Title
Journal ISSN
Volume Title
Publisher
Lethbridge, Alta. : University of Lethbridge, Dept. of Chemistry & Biochemistry
Abstract
The Lewis-behaviour of WF6 towards pyridine and derivatives thereof has been reinvestigated in detail. The stability of WF6 towards main-group donor ligands has been exploited to develop synthetic routes to numerous complexes of W(NC6F5)F4, [WF5]+, WF5, and [WF4]+ with F– and/or neutral N- and P-donor ligands. The isolation of such species has allowed for fundamental explorations of tungsten-based Lewis acids and weakly coordinating anions, the F–-donating and oxidising characteristics of the transition-metal hexafluorides, and the preparation of robust tungsten(V) complexes derived from thermodynamically unstable WF5. The investigation of structure, bonding, and chemistry in these unique systems was undertaken using a combination of crystallographic, spectroscopic, and computational techniques, exemplifying the structural diversity found in hepta- and octacoordinate tungsten(V) and (VI) complexes.
Description
Keywords
Lewis acids , Fluorine , Tungsten , Cations , Coordination compounds , Ligands , Dissertations, Academic
Citation