The effects of linear diamine chain length in uranium sulfates

Journal article

The synthesis of uranium sulfates under hydrothermal conditions in the presence of a series of structurally related organic templating agents was investigated. 1,2-ethylenediamine, 1,3-diaminopropane, 1,4-diaminobutane, 1,5-diaminopentane and 1,6-diaminohexane were used under identical reaction conditions to elucidate the effects of variation in linear diamine chain length on the extended structures. As the chain length increases the charge density of the doubly protonated amines decreases. Four new compounds were synthesised and structurally characterised. Two types of inorganic frameworks are observed, evolving as a function of amine chain length. The compounds synthesised using 1,2-ethylenediamine and 1,3-diaminopropane contain [UO2(H 2O)(SO4)4/2]n2n- chains. The use of 1,4-diaminobutane, 1,5-diaminopentane and 1,6-diaminohexane results in compounds that contain [(UO2)2(SO4) 6]8- dimers. The extended structures of these compounds are correlated to the charge density of the organic templating agents. © 2003 Éditions scientifiques et médicales Elsevier SAS. All rights reserved.

Authors: Norquist, A; Doran, M; O'Hare, D

• Publication status: Published
• Journal: SOLID STATE SCIENCES
• Volume: 5
• Issue: 8
• Pages: 1149-1158
• Publication date: 2003-08-01
• DOI: 10.1016/S1293-2558(03)00133-X
• ISSN: 1293-2558
• Language: English