Accession Number : ADA183634

Title :   Dioxouranium(VI) Dicarboxylate Polymers: Synthesis and Characterization of Tractable Coordination Polymers and Evidence for Rigid Rod Confirmation.

Descriptive Note : Technical rept.,

Corporate Author : MASSACHUSETTS UNIV AMHERST DEPT OF CHEMISTRY

Personal Author(s) : Hardiman,Christopher J ; Archer,Ronald D

PDF Url : ADA183634

Report Date : 28 Feb 1987

Pagination or Media Count : 44

Abstract : A series of polymeric dicarboxylato dioxouranium (VI) species have been synthesized via an equilibrium controlled solution reaction where bis(acetato)dioxouranium (VI) dihydrate undergoes an acid interchange with a dicarboxylic acid. The solution synthesized species have number average molecular weights of up to 1.8 x 10 to the 4th power based on end group analysis, gel permeation chromatography, inherent viscosity and elemental analysis. The empirical Mark-Houwink relation of viscosity to molecular weight has been demonstrated for poly(3,3-dimethyl-pentanedionato)(dimethyl sulfoxide) dioxouranium (VI) which is indicative of rigid rod conformation. This series has also been prepared interfacially where the disodium salt of a dicarboxylic acid in an aqueous phase reacted with bis(nitrato)dioxouranium (VI) hexahydrate in diethyl ether. Keywords: Polymers, Uranium, Carboxylic acids, Diuranyl, Metal-containing polymers.

Descriptors :   *URANIUM COMPOUNDS, LIQUIDS, CARBOXYLIC ACIDS, MOLECULAR WEIGHT, POLYMERS, ETHERS, ETHYL RADICALS, GEL PERMEATION CHROMATOGRAPHY, RIGIDITY, RODS, SOLUTIONS(GENERAL), SYNTHESIS, CARBOXYL GROUPS, POLYMERIZATION, SYNTHESIS(CHEMISTRY), HEAVY METALS, RADIATION CHEMISTRY, STEREOCHEMISTRY, CHELATE COMPOUNDS, MICROSTRUCTURE, VISCOSITY

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE