Synthesis of Neutral and Anionic Uranyl Aryloxide Complexes from Uranyl Amide Precursors: X-ray Crystal Structures of UO2(O-2,6-i-Pr2C6H3)2(py)3 and [Na(THF)3]2[UO2(O-2,6-Me2C6H3)4]

Dinuclear Iron, Cobalt and Uranium Complexes of New Diamidoether Ligands

“…The I H NMR spectrum is devoid of uranyl-bound THF-ligands, indicating that the structure is likely dimeric with amido-bridges (Fig. 5), analogous to {[tBuNON]Co}2 (7). The vU=O stretch in the IR is found at 908 em-I.…”

Synthesis and Crystal Structure of UO2Cl2(THF)3: A Simple Preparation of an Anhydrous Uranyl Reagent

“…Yellow tetrahydrofuran solutions of this compound react at room temperature with a variety of alkali metal salts to yield uranyl products of metathesis reactions (Scheme 1, i-iv). 3,5, 18,19 The coordinated THF may be readily replaced by stronger Lewis bases (Scheme 1, v). 16,20,21 For this reason, it must be protected from atmospheric moisture because it readily exchanges coordinated tetrahydrofuran for water in air.…”

Dimethylsuphoxide and its roles in the coordination chemistry of the uranyl ion

“…The uranium lies 0.066(9) Å out of the plane of the nitrate, which has a dihedral angle of 4.5(2)°to the O 6 equatorial plane that contains (necessarily) the uranium atom. The DMSO-S atom here is only 3.333(4) Å from uranyl-O and even closer Although a ligand of remarkable versatility [26], picrate anion is formally a member of the class of aryloxides and, structurally, uranium(VI) complexes of aryloxide ligands are somewhat better characterised in the particular case of calixarenes [9,28,29] than they are for simple, unidentate aryloxides [30], though this is a situation under redress [23]. A common feature of the currently known chemistry in both domains appears to be the frequent detection of complexes involving binding of the aryloxide donors to oligonuclear uranium clusters which can be regarded as arising from uranyl (UO 2 2+ ) entities linked, most commonly, via bridging by way of equatorial donor atoms.…”

“…After 24 h, these were collected by filtration and washed with ethanol and ether. Yield: 0.75 g. Analysis: calcd for C 12 H 30 …”