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Low‐Coordinate Barium Boryloxides: Synthesis and Dehydrocoupling Catalysis for the Production of Borasiloxanes
Author(s) -
Le Coz Erwann,
Dorcet Vincent,
Roisnel Thierry,
Tobisch Sven,
Carpentier JeanFrançois,
Sarazin Yann
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201807297
Subject(s) - barium , catalysis , agostic interaction , chemistry , intermolecular force , polymer chemistry , organic chemistry , molecule , metal
The first soluble barium boryloxides [Ba]– OB{CH(SiMe 3 ) 2 } are presented. These mono‐ or dinuclear complexes feature low coordination numbers, as low as two for [Ba(OB{CH(SiMe 3 ) 2 } 2 ) 2 ], which is further stabilized by intra‐ and intermolecular Ba⋅⋅⋅H 3 C agostic interactions. Barium boryloxides and the parent [Ba{N(SiMe 3 ) 2 } 2 ⋅(thf) 2 ] catalyze the dehydrocoupling of borinic acids with hydrosilanes, providing borasiloxanes under mild conditions.