Preparation of cerium halide solvate complexes
AssigneeLos Alamos National Security, LLC
InventorsKalyan V. Vasudevan, Nickolaus A. Smith, John C. Gordon, Edward A. McKigney, Ross E. Muenchausen
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Abstract
Crystals of a solvated cerium(III) halide solvate complex resulted from a process of forming a paste of a cerium(III) halide in an ionic liquid, adding a solvent to the paste, removing any undissolved solid, and then cooling the liquid phase. Diffusing a solvent vapor into the liquid phase also resulted in crystals of a solvated cerium(III) halide complex.
Claims15
A process for preparing a cerium halide solvate complex, comprising:
- forming a paste of a cerium(III) halide compound and a suitable ionic liquid, the cerium halide being selected from the group consisting of cerium(III) fluoride, cerium(III) chloride, cerium(III) bromide, and cerium(III) iodide.
- dissolving at least a portion of the paste into a suitable organic solvent to form either a liquid phase or a solid phase and a liquid phase,
- separating any remaining solid phase from the liquid phase, and
- forming crystals of the cerium(III) halide solvate complex from the liquid phase.
A process for preparing cerium(III) halide solvate complexes, comprising:
- combining a suitable ionic liquid with a first cerium(III) halide solvate and a suitable coordinating solvent to form a solid phase and a liquid phase,
- separating the solid phase from the liquid phase, and
- forming crystals of a second cerium(III) halide solvate from the liquid phase.
A composition of the formula CeX3(solvent)q or of the formula [CeX2(solvent)n][CeX4(solvent)m], wherein X is selected from the group consisting of fluoride, chloride, bromide, and iodide, wherein q is 1, 2, 3, 4, or 5, wherein n is 1, 2, 3, 4, or 5, wherein m is 1, 2, 3, 4, or 5, and wherein solvent is selected from the group consisting of an ether, a carboxylic acid, an ester, an aldehyde, 2-methyl-tetrahydrofuran, a thiol, a thioether, a thioester, a thioaldehyde, tetrahydrothiophene, a thiocarboxylic acid, a nitrile, pyridine, a polypyridine, a phosphine, and combinations thereof.
The composition of the formula [CeX2(solvent)n][CeX4(solvent)m] wherein the solvent is an amine.
The composition of the formula CeX3(solvent)n wherein X is selected from fluoride, chloride, and bromide and the solvent is an amine.
Dependencies are inferred from the claim text.