In:
Dalton Transactions, Royal Society of Chemistry (RSC), Vol. 51, No. 42 ( 2022), p. 16354-16360
Abstract:
The coordination of the B–H bond to a transition metal is fundamentally intriguing due to its connection with the transition metal-mediated B–H bond activation mechanism and catalysis. Most of the reported examples are σ-borane/borate complexes containing one or two σ-B–H bonds. However, examples of compounds containing three σ-B–H bonds are still much rarer. Herein, we report a facile approach for the synthesis of rare transition metal tris(σ-B–H) borate complexes by the salt elimination protocol using [Cp*RuCl] 4 and lithium trihydroborates Li[ArBH 3 ] containing 2,6-disubstituted aryl groups. These complexes have remarkable thermal stability in solution. In addition, this novel class of compounds has the unusual σ-complex that features three labile σ-B–H bonds. Our studies on these new species demonstrate that the coordination σ-B–H bond can undergo H/D exchange with D 2 and ligand substitution reactions with PPh 3 , PCy 3 and IPr 2 Me 2 . These results provide new approaches for the synthesis of both tris(σ-B–H) borates and bis(σ-B–H) borates.
Type of Medium:
Online Resource
ISSN:
1477-9226
,
1477-9234
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1472887-4
Permalink