Catalytic oxidative coupling promoted by bismuth TEMPOxide complexes.

Title Catalytic oxidative coupling promoted by bismuth TEMPOxide complexes.
Authors R.J. Schwamm; M. Lein; M.P. Coles; C.M. Fitchett
Journal Chem Commun (Camb)
DOI 10.1039/c7cc08402a

Bismuth(iii) TEMPOxide compounds have been synthesized from the coupling of Bi(ii) species with the TEMPO? radical. The steric profile of the supporting bis(amido)disiloxane ligand promotes different fluxional behaviour in solution, and DFT calculations suggest variation in the Bi-O bond character. These compounds are active catalysts for oxidative coupling of TEMPO and silane substrates, believed to proceed via metathesis of Bi-O and Si-H bonds followed by decomposition of bismuth-hydride intermediate species.

Citation R.J. Schwamm; M. Lein; M.P. Coles; C.M. Fitchett.Catalytic oxidative coupling promoted by bismuth TEMPOxide complexes.. Chem Commun (Camb). 2018. doi:10.1039/c7cc08402a

Related Elements


See more Bismuth products. Bismuth (atomic symbol: Bi, atomic number: 83) is a Block P, Group 15, Period 6 element with an atomic radius of 208.98040. The number of electrons in each of Bismuth's shells is 2, 8, 18, 32, 18, 5 and its electron configuration is [Xe] 4f14 5d10 6s2 6p3. Bismuth Bohr ModelThe bismuth atom has a radius of 156 pm and a Van der Waals radius of 207 pm. In its elemental form, bismuth is a silvery white brittle metal. Bismuth is the most diamagnetic of all metals and, with the exception of mercury, its thermal conductivity is lower than any other metal. Elemental BismuthBismuth has a high electrical resistance, and has the highest Hall Effect of any metal (i.e., greatest increase in electrical resistance when placed in a magnetic field). Bismuth is found in bismuthinite and bismite. It is also produced as a byproduct of lead, copper, tin, molybdenum and tungsten extraction. Bismuth was first discovered by Early Man. The name Bismuth originates from the German word 'wissmuth,' meaning white mass.

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