Synthetic, structural and reaction chemistry of transition metal complexes containing the mesitylborylene ligand

Journal article

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)OC6H4tBu-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.

Authors: Coombs, D; Aldridge, S; Jones, C

• Publication status: Published
• Journal: JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
• Issue: 20
• Pages: 3851-3858
• Publication date: 2002-01-01
• DOI: 10.1039/b206348b
• EISSN: 1364-5447
• ISSN: 1472-7773
• Language: English