Haplotype analysis of the apolipoprotein gene cluster on humanchromosome 11
The protonation of thiodiacetate and its complexation with uranium(VI) in 1.05 molkg{sup -1} NaClO{sub 4} are studied at variable temperatures (10-85 C). Three UVI complexes (UO{sub 2}L, UO{sub 2}HL{sup +}, and UO{sub 2}HL{sub 2}{sup -}, where L is thiodiacetate) are identified in this temperature range. The formation constants and the enthalpies of complexation are determined by potentiometry and calorimetry. The complexation of uranium(VI) with thiodiacetate becomes more endothermic at higher temperatures. However, the complexes become stronger due to increasingly more positive entropies of complexation at higher temperatures, which exceeds the increase in the unfavorable enthalpy of complexation. The values of the heat capacity of complexation ({Delta}Cp ) are 122{+-}16, 302{+-}26, and 242{+-}23 JK{sup -1} mol{sup -1} for UO2L, UO2HL+, and UO2HL2-, respectively. The effect of temperature on the thermodynamics of the complexation is discussed in terms of the electrostatic model and the change in the solvent structure.
- Research Organization:
- COLLABORATION - Medical College ofWisconsin
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 918100
- Report Number(s):
- LBNL--52563; BnR: 400412000
- Journal Information:
- Genomics, Journal Name: Genomics Journal Issue: 5 Vol. 83; ISSN GNMCEP; ISSN 0888-7543
- Country of Publication:
- United States
- Language:
- English
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