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Steric Effects Dictate the Formation of Terminal Arylborylene Complexes of Ruthenium from Dihydroboranes.
- Source :
-
Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2019 Oct 22; Vol. 25 (59), pp. 13566-13571. Date of Electronic Publication: 2019 Sep 17. - Publication Year :
- 2019
-
Abstract
- The steric and electronic properties of aryl substituents in monoaryl borohydrides (Li[ArBH <subscript>3</subscript> ]) and dihydroboranes were systematically varied and their reactions with [Ru(PCy <subscript>3</subscript> ) <subscript>2</subscript> HCl(H <subscript>2</subscript> )] (Cy: cyclohexyl) were studied, resulting in bis(σ)-borane or terminal borylene complexes of ruthenium. These variations allowed for the investigation of the factors involved in the activation of dihydroboranes in the synthesis of terminal borylene complexes. The complexes were studied by multinuclear NMR spectroscopy, mass spectrometry, X-ray diffraction analysis, and density functional theory (DFT) calculations. The experimental and computational results suggest that the ortho-substitution of the aryl groups is necessary for the formation of terminal borylene complexes.<br /> (© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Details
- Language :
- English
- ISSN :
- 1521-3765
- Volume :
- 25
- Issue :
- 59
- Database :
- MEDLINE
- Journal :
- Chemistry (Weinheim an der Bergstrasse, Germany)
- Publication Type :
- Academic Journal
- Accession number :
- 31433081
- Full Text :
- https://doi.org/10.1002/chem.201902890