A Convenient Route to Mixed Pnictogenylboranes

Oliver Hegen; Christian Marquardt; Alexey Y Timoshkin; Manfred Scheer

doi:10.1002/anie.201707436

A Convenient Route to Mixed Pnictogenylboranes

Angew Chem Int Ed Engl. 2017 Oct 2;56(41):12783-12787. doi: 10.1002/anie.201707436. Epub 2017 Sep 5.

Authors

Oliver Hegen¹, Christian Marquardt¹, Alexey Y Timoshkin², Manfred Scheer¹

Affiliations

¹ Universität Regensburg, Institut für Anorganische Chemie, 93040, Regensburg, Germany.
² Institute of Chemistry, St. Petersburg State University, Universitetskaya nab. 7/9, 199034, St. Petersburg, Russia.

PMID: 28783239
DOI: 10.1002/anie.201707436

Abstract

We report on the synthesis and characterization of mixed pnictogenylboranes. The substitution of the Lewis base SMe₂ in (OC)₅ W-PH₂ BH₂ -SMe₂ (2) by different pnictogenylboranes ER₂ BH₂ -LB (E=P, As, Sb) leads to the Lewis acid/base stabilized butane analogue (OC)₅ W-PH₂ BH₂ ER₂ BH₂ -LB (3 a, b: E=P; R=H, SiMe₃ ; LB=NMe₃ ; 4 a, b: E=As; R=H, SiMe₃ ; LB=NMe₃ ; 5: E=Sb; R=SiMe₃ ; LB=NHC^Me ). All of these compounds were characterized by single-crystal X-ray structure analysis, mass spectrometry, NMR, and IR spectroscopy. In addition, the very unstable phosphanylborane chain PH₂ BH₂ PH₂ BH₂ -NMe₃ (1) was synthesized. DFT calculations provide insight into the thermodynamics of these reactions.

Keywords: antimony; arsenic; boron; molecular chains; phosphorus.

Publication types

Research Support, Non-U.S. Gov't