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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Acetohydroxamatoiron(III) complexes : thermodynamics of formation and temperature dependent speciation.
AU - Andrieux, Fabrice P. L.
AU - Boxall, Colin
AU - Taylor, Robin J.
N1 - The original publication is available at www.springerlink.com
PY - 2008/11
Y1 - 2008/11
N2 - Studies of the thermodynamics of formation of the acetohydroxamatoiron(III) complexes were carried out in acidic media at temperatures ranging from 293 to 323 K. Through the isolation of the unique UV-visible spectra of all three complexes, it was possible to determine their formation constants and deduce enthalpies and entropies of formation as well as their molar absorptivities. The enthalpies of formation of the mono-, bis- and trisacetohydroxamatoiron(III) complexes were found to be -56.4, -17.09 and +19.74 kJ.mol(-1), respectively. Following the determination of the enthalpy and entropy of formation of these complexes, speciation diagrams were calculated for the complexes at temperatures ranging from 293 to 323 K.
AB - Studies of the thermodynamics of formation of the acetohydroxamatoiron(III) complexes were carried out in acidic media at temperatures ranging from 293 to 323 K. Through the isolation of the unique UV-visible spectra of all three complexes, it was possible to determine their formation constants and deduce enthalpies and entropies of formation as well as their molar absorptivities. The enthalpies of formation of the mono-, bis- and trisacetohydroxamatoiron(III) complexes were found to be -56.4, -17.09 and +19.74 kJ.mol(-1), respectively. Following the determination of the enthalpy and entropy of formation of these complexes, speciation diagrams were calculated for the complexes at temperatures ranging from 293 to 323 K.
KW - Acetohydroxamic acid
KW - Ferric ions
KW - Complexation
KW - Speciation
KW - Thermodynamic constants
KW - Molar absorptivity
KW - HYDROXAMIC ACID COMPLEXANTS
KW - PLUTONIUM(IV) IONS
KW - HYDROLYSIS
KW - AGENTS
U2 - 10.1007/s10953-008-9327-6
DO - 10.1007/s10953-008-9327-6
M3 - Journal article
VL - 37
SP - 1511
EP - 1527
JO - Journal of Solution Chemistry
JF - Journal of Solution Chemistry
SN - 0095-9782
IS - 11
ER -