Kinetics and Mechanism of the Formation and Acid Dissociation of Cobalt(II), Nickel(II), and Copper(II) Complexes with the Highly Enolized β-Diketone 3-(N-Acetylamido)pentane-2,4-dione (=Hamac) in Aqueous Solution

Inorganic Chemistry

Volumn 35, Issue 8, 1996, Pages 2343-2351

  Hirsch, Jürgen ^a   Paulus, Helmut ^a   Elias, Horst ^a  

^a DARMSTADT UNIVERSITY OF TECHNOLOGY   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000196558     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic950272g     Document Type: Article

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20. Abbreviations: Hamac = 3-(N-acetylamido)pentane-2,4-dione; HMOPS = 3-(N-morpholino)propanesulfonic acid; HMES = 2-(N-morpholino)-ethanesulfonic acid; HLUS = 2,6-dimethylpyridme-3-sulfonic acid; Hacac = acetylacetone = pentane-2,4-dione; Htfpd = 1,1,1-trifluoropentane-2,4-dione: Hhptd = heptane-3,5-dione; Htftbd = 4,4,4-trifluoro-1-(2-thienyl)butane-1,3-dione.
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26. a
27. 0.
28. 0 (eq II), respectively.
29. Data for Cu was taken from: International Tables for X-ray Crystallography; Kynoch Press: Birmingham, England, 1974, Vol. IV.
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33. 20) to produce reaction mixtures of pH 5.5 containing only the enol tautomer of Hamac upon mixing.
34. 0kt). The quality of the fit was very poor though.
35. 2O][HK].
36. Dr. Ing. Thesis, submitted to Technische Hochschule Darmstadt (D17) by J.H. in 1994.
37. +.
38. f step becoming too fast for observation.
39. MEH), is obtained from the intercept with large limits of error, so that the detailed discussion of its size does not make much sense.
40. +.
41. Smith, R. M.; Martell, A. E. Critical Stability Constants; Plenum Press: New York, 1976; Vol. 4, p 6.
42. 2+).
43. Van Eldik, R. Ed Inorganic High Pressure Chemistry; Studies in Inorganic Chemistry 7; Elsevier: Amsterdam. 1986; pp 82 and 85.
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46. 47
47. Jordan, R. B. Reaction Mechanisms of Inorganic and Organometallic Systems; Oxford University Press: Oxford, England, 1991, p 33.
48. HE for copper is by a factor of 183 and 23 larger than for nickel and cobalt, respectively.
49. 50
50. HE were taken from Table 2 of ref 1.