The oxalato complexes of titanium(IV)—I : Mononuclear Ti(OH)2(C2O4)22− in solution

G.M.H. van de Velde

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Abstract

Molecular weight, electrodialysis and anion exchange measurements between pH 1 and 4 showed that the titanyl oxalate anion is present in solution as mononuclear Ti(OH)2(C2O4)22 units. pH studies of solutions of (NH4)2TiO(C2O4)2·H2O in 0.5 M NaClO4 medium and computer evaluation and simulation by LETAGROP and HALTAFALL showed that the behaviour of such solutions can be simulated by applying stability constants of log β1 = 7.90 ± 0.02 and log β2 = 13.24 ± 0.07, when using hydrolysis constants given by Nazarenko et al. In an attempt to determine the stability constant β2 spectrophotometrically using an exchange method with pyrocatechol, a mixed ligand complex was found with a Ti:pyrocatechol:oxalate ratio of 1 : 1 : 1.
Original languageUndefined
Pages (from-to)1357-1362
JournalJournal of Inorganic and Nuclear Chemistry
Volume39
Issue number8
DOIs
Publication statusPublished - 1977

Keywords

  • IR-68067

Cite this

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title = "The oxalato complexes of titanium(IV)—I : Mononuclear Ti(OH)2(C2O4)22− in solution",
abstract = "Molecular weight, electrodialysis and anion exchange measurements between pH 1 and 4 showed that the titanyl oxalate anion is present in solution as mononuclear Ti(OH)2(C2O4)22 units. pH studies of solutions of (NH4)2TiO(C2O4)2·H2O in 0.5 M NaClO4 medium and computer evaluation and simulation by LETAGROP and HALTAFALL showed that the behaviour of such solutions can be simulated by applying stability constants of log β1 = 7.90 ± 0.02 and log β2 = 13.24 ± 0.07, when using hydrolysis constants given by Nazarenko et al. In an attempt to determine the stability constant β2 spectrophotometrically using an exchange method with pyrocatechol, a mixed ligand complex was found with a Ti:pyrocatechol:oxalate ratio of 1 : 1 : 1.",
keywords = "IR-68067",
author = "{van de Velde}, G.M.H.",
year = "1977",
doi = "10.1016/0022-1902(77)80298-4",
language = "Undefined",
volume = "39",
pages = "1357--1362",
journal = "Polyhedron",
issn = "0277-5387",
publisher = "Elsevier",
number = "8",

}

The oxalato complexes of titanium(IV)—I : Mononuclear Ti(OH)2(C2O4)22− in solution. / van de Velde, G.M.H.

In: Journal of Inorganic and Nuclear Chemistry, Vol. 39, No. 8, 1977, p. 1357-1362.

Research output: Contribution to journalArticleAcademic

TY - JOUR

T1 - The oxalato complexes of titanium(IV)—I : Mononuclear Ti(OH)2(C2O4)22− in solution

AU - van de Velde, G.M.H.

PY - 1977

Y1 - 1977

N2 - Molecular weight, electrodialysis and anion exchange measurements between pH 1 and 4 showed that the titanyl oxalate anion is present in solution as mononuclear Ti(OH)2(C2O4)22 units. pH studies of solutions of (NH4)2TiO(C2O4)2·H2O in 0.5 M NaClO4 medium and computer evaluation and simulation by LETAGROP and HALTAFALL showed that the behaviour of such solutions can be simulated by applying stability constants of log β1 = 7.90 ± 0.02 and log β2 = 13.24 ± 0.07, when using hydrolysis constants given by Nazarenko et al. In an attempt to determine the stability constant β2 spectrophotometrically using an exchange method with pyrocatechol, a mixed ligand complex was found with a Ti:pyrocatechol:oxalate ratio of 1 : 1 : 1.

AB - Molecular weight, electrodialysis and anion exchange measurements between pH 1 and 4 showed that the titanyl oxalate anion is present in solution as mononuclear Ti(OH)2(C2O4)22 units. pH studies of solutions of (NH4)2TiO(C2O4)2·H2O in 0.5 M NaClO4 medium and computer evaluation and simulation by LETAGROP and HALTAFALL showed that the behaviour of such solutions can be simulated by applying stability constants of log β1 = 7.90 ± 0.02 and log β2 = 13.24 ± 0.07, when using hydrolysis constants given by Nazarenko et al. In an attempt to determine the stability constant β2 spectrophotometrically using an exchange method with pyrocatechol, a mixed ligand complex was found with a Ti:pyrocatechol:oxalate ratio of 1 : 1 : 1.

KW - IR-68067

U2 - 10.1016/0022-1902(77)80298-4

DO - 10.1016/0022-1902(77)80298-4

M3 - Article

VL - 39

SP - 1357

EP - 1362

JO - Polyhedron

JF - Polyhedron

SN - 0277-5387

IS - 8

ER -