Evidence for ligand- and solvent-induced disproportionation of uranium(IV)

Autor: Jingzhen Du, Iskander Douair, Erli Lu, John A. Seed, Floriana Tuna, Ashley J. Wooles, Laurent Maron, Stephen T. Liddle

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-12 (2021)

Disproportion of uranium(IV) is rare, as it is usually the stable product of uranium(III) or (V) disproportionation. Here, the authors report uranium(IV) disproportionation to uranium(III) and (V) revealing ligand and solvent control over a key therm

Externí odkaz: https://doaj.org/article/5ac34972f56b41e9bc066aa1f726c30f

Uranium–nitride chemistry: uranium–uranium electronic communication mediated by nitride bridges

Autor: David M. King, Benjamin E. Atkinson, Lucile Chatelain, Matthew Gregson, John A. Seed, Ashley J. Wooles, Nikolas Kaltsoyannis, Stephen T. Liddle

Publikováno v: King, D M, Liddle, S T, Wooles, A, Seed, J, Gregson, M, Kaltsoyannis, N, Atkinson, B & Chatelain, L 2022, ' Uranium-Nitride Chemistry: Uranium-Uranium Electronic Communication Mediated by Nitride Bridges ', Dalton Transactions, vol. 51, no. 22, pp. 8855-8864 . https://doi.org/10.1039/D2DT00998F

Treatment of [U IV(N 3)(Tren TIPS)] (1, Tren TIPS = {N(CH 2CH 2NSiPr i 3) 3} 3−) with excess Li resulted in the isolation of [{U IV(μ-NLi 2)(Tren TIPS)} 2] (2), which exhibits a diuranium(iv) ‘diamond-core’ dinitride motif. Over-reduction of 1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f17034dc33189623275e7e95b60802d1
https://doi.org/10.1039/d2dt00998f

Exceptional uranium(VI)-nitride triple bond covalency from 15N nuclear magnetic resonance spectroscopy and quantum chemical analysis

Autor: Ralph W. Adams, Stephen T. Liddle, Nikolas Kaltsoyannis, Jingzhen Du, John A. Seed, Victoria E. J. Berryman, Daniel Lee

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)
Nature Communications
Du, J, Seed, J, Berryman, V, Kaltsoyannis, N, Adams, R, Lee, D & Liddle, S 2021, ' Exceptional Uranium(VI)-Nitride Triple Bond Covalency from 15N Nuclear Magnetic Resonance Spectroscopy and Quantum Chemical Analysis ', Nature Communications, vol. 12, pp. 5649 . https://doi.org/10.1038/s41467-021-25863-2

Determining the nature and extent of covalency of early actinide chemical bonding is a fundamentally important challenge. Recently, X-ray absorption, electron paramagnetic, and nuclear magnetic resonance spectroscopic studies have probed actinide-lig

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d54fdee34733ae5058e87d701b3b4b5e
https://doaj.org/article/109d4071717442b399b43eed3791e338

Anomalous magnetism of uranium(IV)-oxo and -imido complexes reveals unusual doubly degenerate electronic ground states

Autor: John A. Seed, Stephen T. Liddle, Nicholas F. Chilton, Letitia Birnoschi, Erli Lu, Ashley J. Wooles, Floriana Tuna

Publikováno v: Chem
Seed, J, Birnoschi, L, Lu, E, Tuna, F, Wooles, A, Chilton, N & Liddle, S 2021, ' Anomalous Magnetism of Uranium(IV)-Oxo and-Imido Complexes Reveals Unusual Doubly-Degenerate Electronic Ground States ', Chem, vol. 7, no. 6, pp. 1666-1680 . https://doi.org/10.1016/j.chempr.2021.05.001

Summary A fundamental part of characterizing any metal complex is understanding its electronic ground state, for which magnetometry provides key insight. Most uranium(IV) complexes exhibit low-temperature magnetic moments tending to zero, consistent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::779f19f4bbacf1ff121d29d49e3cb35a
https://doi.org/10.1016/j.chempr.2021.05.001

Reply to: [{Th(C

Autor: Josef T, Boronski, John A, Seed, David, Hunger, Adam W, Woodward, Joris, van Slageren, Ashley J, Wooles, Louise S, Natrajan, Nikolas, Kaltsoyannis, Stephen T, Liddle

Publikováno v: Nature. 603(7902)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::db948dcc87622a41c18ce9ab6d40b8df
https://pubmed.ncbi.nlm.nih.gov/35322245