Uranyl compounds employing a strong base
AssigneeExxon Research & Engineering Co.
InventorsGeorge M. Kramer, Donald M. Cox, Martin B. Dines, Edward T. Maas, Jr.
Life of this patent
Estimating the term…
Abstract
Novel compositions of matter are disclosed having the general formula UO.sub.2 AA'L.sub.n, in which A and A' are anions whose conjugate acids have boiling points less than about 200.degree. C. and pK.sub.a values of 4.8 or less, L is a neutral ligand (1) having a boiling point of greater than about 200.degree. C. and an equilibrium constant for its exchange reaction with complexed tetrahydrofuran of greater than about 10.sup.-3, or (2) having an equilibrium constant for its exchange reaction with complexed tetrahydrofuran of greater than about 10.sup.3, and n is an integer of from 1 to 4.
Claims21
A composition of matter having the formula UO.sub.2 AA'L.sub.n, wherein A and A' are anions whose conjugate acids having boiling points of less than about 200.degree. C. and pK.sub.a values of 4.8 or less, and which form chelate rings having more than four members, L is a neutral ligand having a boiling point of greater than about 200.degree. C. and an equilibrium constant for its exchange reaction with the complex of UO.sub.2 AA' with tetrahydrofuran of greater than about 10.sup.-3, said neutral ligand being selected from the group consisting of primary, secondary and tertiary amines, alkylamineoxides, amides, aldehydes, ketones, lactones, ethers, esters, imides, alkenyl carbonates and phosphorous compounds having the formula ##STR4## wherein R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of ethyl, N-alkylamino, and N,N-dialkylamino groups, and n is an integer from 1 to 4, said composition forming a monomeric species in solution and exhibiting an infrared band at about 950 cm.sup.-1 having a bandwidth of less than about 10 cm.sup.-1.
A composition of matter having the formula UO.sub.2 AA'L.sub.n, wherein A and A' are anions whose conjugate acids have boiling points of less than about 200.degree. C. and pK.sub.a values of 4.8 or less, and which form chelate rings having more than four members, L is a neutral ligand having an equilibrium constant for its exchange reaction with the complex of UO.sub.2 AA' with tetrahydrofuran of greater than about 10.sup.3, said neutral ligand being selected from the group consisting of primary, secondary and tertiary amines, alkylamineoxides, amides, aldehydes, ketones, ethers, esters, imides, alkenyl carbonates, lactones, dialkylsulfoxides wherein said alkyl groups include from 2 to 3 carbon atoms, and phosphorous compounds having the formula ##STR5## wherein R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of alkyl, N-alkylamino, and N,N-dialkylamino groups and n is an integer from 1 to 4, said composition forming a monomeric species in solution and exhibiting an infrared band at about 950 cm.sup.-1 having a bandwidth of less than about 10 cm.sup.-1.
Dependencies are inferred from the claim text.