Chemistry Publications
Document Type
Article
Publication Date
Summer 6-12-2017
Journal
Angewandte Chemie International Edition
Volume
56
Issue
28
First Page
8173
Last Page
8177
URL with Digital Object Identifier
DOI: 10.1002/anie.201704285
Abstract
Five new compounds comprised of unprecedented boron-nitrogen heterocycles have been isolated from a single reaction of a potentially tetradentate N2O23− formazanate ligand with BF3•OEt2 and NEt3. Optimized yields for each product were obtained through variation of experimental conditions and rationalized in terms of relative Gibbs free energies of the products as determined by electronic structure calculations. Chemical reduction of two of these compounds resulted in the formation of a stable anion, radical anion, and diradical dianion. Structural and electronic properties of this new family of redox-active heterocycles were characterized using UV-vis absorption spectroscopy, cyclic voltammetry and X-ray crystallography.
