Dipnictogen f-Element Chemistry: A Diphosphorus Uranium Complex
作者:Jingzhen Du、David Hunger、John A. Seed、Jonathan D. Cryer、David M. King、Ashley J. Wooles、Joris van Slageren、Stephen T. Liddle
DOI:10.1021/jacs.1c02482
日期:2021.4.14
The first isolation and structuralcharacterization of an f-element dinitrogen complex was reported in 1988, but an f-element complex with the first heavier group 15 homologue diphosphorus has to date remained unknown. Here, we report the synthesis of a side-on bound diphosphorus complex of uranium(IV) using a 7λ3-(dimethylamino)phosphadibenzonorbornadiene-mediated P atom transfer approach. Experimental
An Inverted-Sandwich Diuranium μ-η<sup>5</sup>:η<sup>5</sup>-Cyclo-P<sub>5</sub>Complex Supported by U-P<sub>5</sub>δ-Bonding
作者:Benedict M. Gardner、Floriana Tuna、Eric J. L. McInnes、Jonathan McMaster、William Lewis、Alexander J. Blake、Stephen T. Liddle
DOI:10.1002/anie.201501728
日期:2015.6.8
affords the unprecedented actinide invertedsandwich cyclo‐P5 complex [U(TrenTIPS)}2(μ‐η5:η5‐cyclo‐P5)] (2). All prior examples of cyclo‐P5 are stabilized by d‐block metals, so 2 shows that cyclo‐P5 does not require d‐block ions to be prepared. Although cyclo‐P5 is isolobal to cyclopentadienyl, which usually bonds to metals via σ‐ and π‐interactions with minimal δ‐bonding, theoretical calculations
Uranium–nitride chemistry: uranium–uranium electronic communication mediated by nitride bridges
作者:David M. King、Benjamin E. Atkinson、Lucile Chatelain、Matthew Gregson、John A. Seed、Ashley J. Wooles、Nikolas Kaltsoyannis、Stephen T. Liddle
DOI:10.1039/d2dt00998f
日期:——
(1, TrenTIPS = N(CH2CH2NSiPri3)3}3−) with excess Li resulted in the isolation of [UIV(μ-NLi2)(TrenTIPS)}2] (2), which exhibits a diuranium(IV) ‘diamond-core’ dinitride motif. Over-reduction of 1 produces [UIII(TrenTIPS)] (3), and together with known [UV(μ-NLi)(TrenTIPS)}2] (4) an overall reduction sequence 1 → 4 → 2 → 3 is proposed. Attempts to produce an odd-electron nitride from 2 resulted in the
Two-Electron Reductive Carbonylation of Terminal Uranium(V) and Uranium(VI) Nitrides to Cyanate by Carbon Monoxide
作者:Peter A. Cleaves、David M. King、Christos E. Kefalidis、Laurent Maron、Floriana Tuna、Eric J. L. McInnes、Jonathan McMaster、William Lewis、Alexander J. Blake、Stephen T. Liddle
DOI:10.1002/anie.201406203
日期:2014.9.22
Two‐electron reductivecarbonylation of the uranium(VI) nitride [U(TrenTIPS)(N)] (2, TrenTIPS=N(CH2CH2NSiiPr3)3) with CO gave the uranium(IV) cyanate [U(TrenTIPS)(NCO)] (3). KC8 reduction of 3 resulted in cyanate dissociation to give [U(TrenTIPS)] (4) and KNCO, or cyanate retention in [U(TrenTIPS)(NCO)][K(B15C5)2] (5, B15C5=benzo‐15‐crown‐5 ether) with B15C5. Complexes 5 and 4 and KNCO were also prepared
Assessing crystal field and magnetic interactions in diuranium-μ-chalcogenide triamidoamine complexes with U<sup>IV</sup>–E–U<sup>IV</sup> cores (E = S, Se, Te): implications for determining the presence or absence of actinide–actinide magnetic exchange
作者:Benedict M. Gardner、David M. King、Floriana Tuna、Ashley J. Wooles、Nicholas F. Chilton、Stephen T. Liddle
DOI:10.1039/c7sc01998j
日期:——
the synthesis and characterisation of a family of diuranium(IV)-μ-chalcogenide complexes including a detailed examination of their electronic structures and magnetic behaviours. Treatment of [U(TrenTIPS)] [1, TrenTIPS = N(CH2CH2NSiPri3)3] with Ph3PS, selenium or tellurium affords the diuranium(IV)-sulfide, selenide, and telluride complexes [U(TrenTIPS)}2(μ-E)] (E = S, 2; Se, 5; Te, 6). Complex 2 is