Spectrophotometric Studies of Dioxo-Complexes of Quadrivalent Metals. I. Complexes of Zirconium and Hafnium with Pyrogallolsulfonephthalein

Journal Article · Thu Feb 28 23:00:00 EST 1963 · Journal of the Chinese Chemical Society

DOI:https://doi.org/10.1002/jccs.196300003· OSTI ID:4090675

Pan, Kuan; Lin, Zui-Feng; Lin, Sheng-Hsien; Wu, Yu-Lin; Chen, Eng-Ming

Pyrogallolsulfonephthalein and its complexes with zirconium and hafnium were spectrophotometrically studied in HClO/sub 4/ and NaClO/sub 4/ solutions of various pH's. An absorption maximum at 472 m mu was found for pyrogallolsulfonephthalein at pH 1.0 and 1.5. It shifts to 518 and 520 m mu in the presence of zirconium at pH 1.0 and hafnium at pR 1.5, respectively. The mole ratios of both metals to the dye were found to be 1: 1, and the apparent instability constants of the complexes were estimated as 1.34 x 10/sup -5/ for the former and 7.06 x 10/sup -6/ for the latter.

• Research Organization: National Taiwan Univ., China
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-010126
• OSTI ID: 4090675
• Journal Information: Journal of the Chinese Chemical Society, Journal Name: Journal of the Chinese Chemical Society Journal Issue: 1 Vol. 10; ISSN 0009-4536
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ACIDITY
AROMATICS
CHELATES
CHEMICALS
CHEMISTRY
CONFIGURATION
DECOMPOSITION
DIAGRAMS
DYES
FREQUENCY
HAFNIUM COMPLEXES
LIGHT
MEASURED VALUES
MOLECULES
PERCHLORIC ACID
PHENOLS
PHOTOMETRY
QUANTITY RATIO
SODIUM COMPOUNDS
SOLUTIONS
SPECTRA
SPECTROSCOPY
STABILITY
SULFONIC ACIDS
TABLES
VARIATIONS
WATER
ZIRCONIUM COMPLEXES