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Volumn , Issue 13, 2005, Pages 2591-2599

Mechanistic insights into the oxidation of veratryl alcohol with Co(salen) and oxygen in aqueous media: An in-situ spectroscopic study

Author keywords

Cobalt complexes; Homogeneous catalysis; IR spectroscopy; Raman spectroscopy; Schiff bases; UV Vis spectroscopy

Indexed keywords

ALDEHYDES; ALKALINITY; ATOMS; CATALYSIS; CATALYTIC OXIDATION; COBALT COMPOUNDS; METAL COMPLEXES; MOLECULAR OXYGEN; MOLECULES; SPECTROSCOPIC ANALYSIS; ULTRAVIOLET VISIBLE SPECTROSCOPY;

EID: 22144469766     PISSN: 14341948     EISSN: None     Source Type: Journal    
DOI: 10.1002/ejic.200500042     Document Type: Article
Times cited : (69)

References (47)
  • 1
    • 0141562620 scopus 로고
    • (Eds.: C. S. Foote, J. S. Valentine, A. Greenberg, J. F. Liebman); SEARCH series, Chapman & Hall
    • J. Ebner, D. Riley, in: Active Oxygen in Chemistry, (Eds.: C. S. Foote, J. S. Valentine, A. Greenberg, J. F. Liebman); SEARCH series, vol. 1, Chapman & Hall, 1995, pp. 204-248.
    • (1995) Active Oxygen in Chemistry , vol.1 , pp. 204-248
    • Ebner, J.1    Riley, D.2
  • 21
    • 4444345521 scopus 로고    scopus 로고
    • (Ed.: B. M. Weckhuysen), American Scientific Publishers, Stevenson Ranch
    • In-situ Spectroscopy of Catalysts (Ed.: B. M. Weckhuysen), American Scientific Publishers, Stevenson Ranch, 2004.
    • (2004) In-situ Spectroscopy of Catalysts
  • 29
    • 85153258790 scopus 로고    scopus 로고
    • note
    • -1): 2960 (w), 2854 (w), 1729 (w), 1673 (m), 1588 (d, m), 1513 (m-s), 1468 (m), 1455 (w), 1428 (w), 1345 (w), 1272 (s), 1245 (w), 1160 (w), 1140 (m), 1071 (w), 1017 (m). Similar shifts are observed in the Raman spectra, but the intensities of the vibrations can differ.
  • 36
    • 85153176009 scopus 로고    scopus 로고
    • note
    • The commercial veratraldehyde exhibits absorption maxima at 268 nm and 308 nm with a shoulder at 290 nm. Veratrylic acid shows absorption maximum at 250.4 nm with shoulders at 295 nm and 330 nm.
  • 37
    • 85153290657 scopus 로고    scopus 로고
    • note
    • The initial oxidation rates were calculated from the derivatives at time zero for the functions presenting the conversion of the aldehyde as a function of time. These functions were obtained from the linear fit for the conversion points as a function of time during the first 10% of aldehyde formation. The rate of the reaction decreases after the conversion of aldehyde is over 15 %. The slope of the plot was multiplied with the substrate/ metal molar ratio to get result in the form of TON/h = TOF (1/h).
  • 39
    • 85153255967 scopus 로고    scopus 로고
    • note
    • - ion. For example, in an overall reaction in which pH decreased from 11.2 to 10.0, 30 moles of aldehyde was produced per 1 mol of hydroxide consumed.
  • 40
    • 85153201492 scopus 로고    scopus 로고
    • note
    • In these reactions initial pH 11.6 (0.005 M NaOH) was applied, as even modern pH electrodes seem to be too inaccurate for such a study in pH higher than 12.
  • 41
    • 85153296470 scopus 로고    scopus 로고
    • note
    • -1 is also visible in the corresponding ATR-IR spectra.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.