501122-91-4Relevant academic research and scientific papers
Cationic terminal borylenes by halide abstraction: Synthesis and spectroscopic and structural characterization of an Fe=B double bond
Coombs, Deborah L.,Aldridge, Simon,Jones, Cameron,Willock, David J.
, p. 6356 - 6357 (2003)
The synthesis and the spectroscopic and structural characterization of the cationic terminal borylene complex [Cp*Fe(CO)2(BMes)]+ are reported. Halide abstraction from the corresponding bromoboryl species using Na[BArfsub
Fe=B double bonds: Synthetic, structural, and reaction chemistry of cationic terminal borylene complexes
Coombs, Deborah L.,Aldridge, Simon,Rossin, Andrea,Jones, Cameron,Willock, David J.
, p. 2911 - 2926 (2008/10/09)
Application of halide abstraction chemistry to asymmetric haloboryl complexes (η5-C5-Me5)Fe(CO) 2B(ERn)X leads to the first synthetic route to cationic multiply bonded group 13 diyl species, [(η5-C5Me 5)Fe(CO)2B(ERn]+. The roles of steric bulk and π electron release within the ERn substituent in generating tractable borylene complexes have been probed, as has the nature of the counterion. A combination of spectroscopic, structural, and computational techniques leads to the conclusion that the bonding in complexes such as [η5-C5Me5)Fe-(CO)2B(Mes)] + is best described as an Fe=B double bond composed of B→Fe σ donor and Fe→B π back-bonding components. An extended study of the fundamental reactivity of cationic borylene systems reveals that this is dominated not only by nucleophilic addition at boron but also by iron-centered substitution chemistry leading to overall displacement of the borylene ligand.
Synthetic, structural and reaction chemistry of transition metal complexes containing the mesitylborylene ligand
Coombs, Deborah L.,Aldridge, Simon,Jones, Cameron
, p. 3851 - 3858 (2007/10/03)
The synthesis, spectroscopic and structural characterization of the bromo-boryl complexes (η5-C5R4R′)Fe(CO)2- B(2,4,6-Me3C6H2)Br (R = R′ = H, 2; R = H, R′ = Me, 3; R = R′ = Me, 4) are reported. These are shown to be versatile substrates for the synthesis of both asymmetric boryl complexes [e.g. (η5-C5H5)Fe(CO)2B(2,4,6-Me 3C6H2)OC6H4 tBu-4, 6], and bridging borylene complexes {e.g. [η5-C5H4R)Fe(CO)2] 2B(2,4,6-Me3C6H2), R = H, 7; R = Me, 8} via substitution chemistry with retention of the metal-boron bond. Complexes 7 and 8 are thefirst reported examples of structurally characterized bridging borylene complexes without a supporting M-M bond. Photolytically induced CO loss from [η5-C5H5)Fe(CO)2] 2B(2,4,6-Me3C6H2) yields the complex [η5-C5H5)Fe(CO)]2(μ 2-CO)[μ2-B(2,4,6-Me3C6H 2)] (11), which features a supported bridging borylene ligand.
