Spectrophotometric Studies of Uranyl(VI) Chelate of β‐Isopropyltropolone | Zendy

Hseu TongMing | Zendy; Chang Cheng | Zendy; Hsu KuangLing | Zendy

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Spectrophotometric Studies of Uranyl(VI) Chelate of β‐Isopropyltropolone

Author(s) -

Hseu TongMing,

Chang Cheng,

Hsu KuangLing

Publication year - 1977

Publication title -

journal of the chinese chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.329

H-Index - 45

eISSN - 2192-6549

pISSN - 0009-4536

DOI - 10.1002/jccs.197700002

Subject(s) - chemistry , uranyl , chelation , enthalpy , dissociation constant , stability constants of complexes , ethanol , acid dissociation constant , inorganic chemistry , ion , entropy (arrow of time) , nuclear chemistry , analytical chemistry (journal) , chromatography , thermodynamics , aqueous solution , organic chemistry , biochemistry , physics , receptor

The acid dissociation constant (K a ) of β‐isopropyltropolone (IPT or HL) together with the stability constant (K) of its chelate complex with UO 2 2+ ion have been determined in water‐ethanol medium containing 50% ethanol by volume and 0.1 M NaClO, over the temperature range 15‐45°C. From these results, values of the free energy, enthalpy and entropy of the chelation have been calculated at 25°C The results are collected as follows:

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