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Controlled homocatenation of boron on a transition metal
journal contribution
posted on 2023-06-08, 15:41 authored by Holger Braunschweig, Qing Ye, Alfredo VargasAlfredo Vargas, Rian D Dewhurst, Krzysztof Radacki, Alexander DammeOnly a handful of elements are able to be controllably homocatenated (that is, to be formed into one- or two-dimensional chains or rings of the element), because most have weak element–element bonds. Boron forms strong B–B bonds, but its favourable cluster formation makes homocatenation very difficult. Recently, the coupling of borylene (:BR) ligands on a metal was predicted computationally. We have brought this prediction to fruition experimentally, and extended it by adding two further borylene units, stepwise forming a B4 chain bound to a metal under mild conditions. This complex is a useful model for understanding the metal–boron interactions required to promote transition of the boron atoms from borylene ligands to oligoborane networks bound side-on. The concept shows great promise for the controlled construction of one-dimensional boron chains.
History
Publication status
- Published
Journal
Nature ChemistryISSN
1755-4330Publisher
Nature Publishing GroupExternal DOI
Volume
4Page range
563-567Department affiliated with
- Chemistry Publications
Full text available
- No
Peer reviewed?
- Yes