An extremely low-field shifted B NMR signal at δ=204.3 and a very short Cr-B distance of 187.8 pm characterize the title compound [(OC) Cr=B-Si(SiMe ) ], which is the first borylene complex in which the boron atom is both coordinatively and electronically unsaturated.
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Binding of base-stabilized borylenes with transition metals and formation of metal only Lewis pairs.
Dalton Trans
January 2025
Department of Chemical Sciences, Tezpur University, Napaam 784028, Assam, India.
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- Computational studies using Density Functional Theory suggest that stable borylenes, which are mono Lewis base-stabilized, can effectively bind to transition metal complexes like iron (Fe) and nickel (Ni).* -
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Metalized Borylene in Boron-Gold Carbonyl Complexes: Infrared Spectra and Theoretical Calculations.
Chemistry
November 2024
School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China.
Article Synopsis
- Borylenes with a B-R bond exhibit unique reactivity similar to transition metals, yet understanding of their electronic structure remains limited.
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Evidence of boride-borylene ligand-tautomerism leading to a remote C-C-bond and concomitant boryl ligand formation.
Dalton Trans
December 2024
Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
The formation of a rhodium pincer-type complex with a boron-based donor ligand and its reactivity are reported. The starting complex contains a formal borylene moiety, stabilised by two pyridine substituents. Quantum chemical investigations indicate the possibility of deprotonation of the central donor group of the type pyBH in this complex.
View Article and Find Full Text PDFReactivity of Diruthenium Bisborylene Complexes: Formation of B-C and B-H Bonds via Borylene Ligand Coupling.
Inorg Chem
November 2024
School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China.
Thermal or photoinduced isomerization of diruthenium bridging bisborylene complexes [{Cp*(H)Ru}(μ-BAr)] (, Ar = Ph; , Ar = 3,4,5-FCH) led to -ruthenacarboranes and with newly formed B-C and B-H bonds. The reaction mechanism was analyzed by deuterium-labeling experiments and density functional theory calculations. Additionally, 2-fold B-H coupling between borylene and two hydrido ligands of can be achieved, assisted by Lewis base IPrMe to generate a dinuclear bridging borylene complex [(Cp*Ru)(μ-H)(μ-BPh)] ().
View Article and Find Full Text PDFIsolable Si=B Analogue of a Vinyl Halide: A Building Block for Facile Access toward Silicon-Boron Multiple Bonded Species.
Angew Chem Int Ed Engl
November 2024
Department of Chemistry, Graduate School of Science, Tohoku University Aoba-ku, Sendai, 980-8578, Japan.
Compared to the outstanding development in the synthesis of Si-B single bonded species, borylsilanes and their application to organic synthesis, the chemistry of Si=B double bonded species, borasilenes and boratasilenes have only made little progress, first of all, due to the difficulties in accessing such double bonds. Herein we report the synthesis of the first Si=B analogue of a vinyl halide, a bromoboratasilene, via formal borylene insertion to the coordination sphere of a monoatomic Si(0) complex, using a dihaloborane as the borylene source. The treatment of bromoboratasilene toward neutral or anionic Lewis bases gives access to new boratasilenes, all of which were proved to possess significant Si=B double bond character by XRD analysis and DFT calculations.
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