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Updated: Jan 27, 2026

Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy
Published on: February 20, 2020
Unsaturated vicinal frustrated phosphane/borane Lewis pairs as ligands in gold(i) chemistry
Atsushi Ueno1, Kohei Watanabe, Constantin G Daniliuc
1Organisch-Chemisches Institut der Universität Münster, Corrensstraße 40, 48149 Münster, Germany. erker@uni-muenster.de.
Abstract:
The P/B FLP 6, formed by the 1,1-hydroboration of dimesitylphosphino(trimethylsilyl)acetylene with HB(C6F5)2 forms the Au(i)X complexes 9a (X: Cl) and 10a (X: NTf2), respectively. Both show marked AuB interactions. The P/B FLP isomer 8, featuring the bulky SiMe3 substituent at the carbon adjacent to boron forms gold complexes 9b and 10b, both of which show weaker AuB interactions. Complex 10a was employed in the catalytic hydroamination of a series of alkynes with p-toluidine. Complexes 9 and 10 were characterized by X-ray diffraction.
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