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Physico‐Chemical Studies of Hinokitiol. IV. Spectrophotometric Study of the Chelate Compounds of the Group IVB Metals with Hinokitiol
Author(s) -
Hseu TongMing
Publication year - 1961
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.196100004
Subject(s) - chemistry , chelation , zirconium , thorium , titanium , metal , atomic absorption spectroscopy , inorganic chemistry , metal ions in aqueous solution , nuclear chemistry , metallurgy , uranium , organic chemistry , materials science , physics , quantum mechanics
Stability constants of titanium (IV), zirconium and thorium‐hinokitiolate chelates have been calculated from spectrophotometric data in 50% ethanol‐water solution at 25°. It has been found that the stability constant and the optimum p H of the various metal chelates increase with the increase in the atomic number of metals. The order of stability for the metals is the same as that found for other types of coordinating agents. Zirconium and thorium combine with four hinokitiolate ions, while titanium (IV) combines with only two hinokitiolate ions to form a chelate compound. A list of molar absorption coefficients is given and the photometric sensitivities of these metals with hinokitiol were determined.