Substituted β-diketones and their complexes: Substituent effects on ligand stabilities and anion effects on complex stability constants

✍ Scribed by J.L. Ault; H.J. Harries; J. Burgess

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 423 KB
• Volume: 25
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)95692-5

✦ Synopsis

Acid dissociation constants are reported for variously I -, 3; and 5-substituted pentane_2,4diones in aqueous solution, and in 50% vfv dioxan. The instability of 3substituted compounds in solution is described. The l-and 5-substituted compounds are stable in solution; stability constants for their cobalt-(II) complexes in 50% v/v dioxan are reported. l'he dependence of apparent stability constant on the nature of the anion present is described; values obtained in perchlorate or trifluoromethylsulphonate media are presumed to be true stability constants.