Caesium diuranium hexa­telluride

Quantum chemistry predicts multiply bonded diuranium compounds to be stable.

Results from quantum chemical calculations that predict the existence of a series of diuranium molecules are reported. Two diuranium chlorides, U(2)Cl(6) and U(2)Cl(8)(2)(-), and three different carboxylates, U(2)(OCHO)(4), U(2)(OCHO)(6), and U(2)(OCHO)(4)Cl(2) have been studied. All species have been found to be stable with a multiply bonded U(2) unit.

Crystalline Diuranium Phosphinidiide and μ‐Phosphido Complexes with Symmetric and Asymmetric UPU Cores

Reaction of [U(TrenTIPS )(PH2 )] (1, TrenTIPS =N(CH2 CH2 NSiPri3 )3 ) with C6 H5 CH2 K and [U(TrenTIPS )(THF)][BPh4 ] (2) afforded a rare diuranium parent phosphinidiide complex [{U(TrenTIPS )}2 (μ-PH)] (3). Treatment of 3 with C6 H5 CH2 K and two equivalents of benzo-15-crown-5 ether (B15C5) gave the diuranium μ-phosphido complex [{U(TrenTIPS )}2 (μ-P)][K(B15C5)2 ] (4). Alternatively, reaction...

Quantum chemical calculations predict the diphenyl diuranium compound [PhUUPh] to have a stable 1Ag ground state.

Assessing crystal field and magnetic interactions in diuranium-μ-chalcogenide triamidoamine complexes with UIV–E–UIV cores (E = S, Se, Te): implications for determining the presence or absence of actinide–actinide magnetic exchange† †Electronic supplementary information (ESI) available: Supplementary magnetic data and modelling, and crystallographic details. CCDC 1547173–1547177. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7sc01998j Click here for additional data file. Click here for additional data file.

We report the synthesis and characterisation of a family of diuranium(IV)-m-chalcogenide complexes including a detailed examination of their electronic structures and magnetic behaviours. Treatment of [U(Tren)] [1, Tren 1⁄4 N(CH2CH2NSiPr3)3] with Ph3PS, selenium or tellurium affords the diuranium(IV)-sulfide, selenide, and telluride complexes [{U(Tren)}2(m-E)] (E 1⁄4 S, 2; Se, 5; Te, 6). Comple...

Uranium-nitrogen multiple bonding: isostructural anionic, neutral, and cationic uranium nitride complexes featuring a linear U=N=U core.

Reaction of the uranium(III) tris(anilide) complex (THF)U(N[t-Bu]Ar)(3) (1, THF = tetrahydrofuran; Ar = 3,5-Me(2)C(6)H(3)) with MN(3) (M = Na, [N(n-Bu)(4)]) results in the formation of the bimetallic diuranium(IV/IV) complexes M[(mu-N)(U(N[t-Bu]Ar)(3))(2)] (M[3]), which feature a single nitride ligand engaged as a linear, symmetric bridge between two uranium centers. The stability of the U=N=U ...