Photochemical behavior of the iron(III)/2,6-dimethylphenol system

被引:0
|
作者
Mazellier, P [1 ]
Mailhot, G [1 ]
Bolte, M [1 ]
机构
[1] UNIV CLERMONT FERRAND, URA CNRS 433, PHOTOCHIM MOL & MACROMOL LAB, F-63177 CLERMONT FERRAND, FRANCE
关键词
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The photoinduced degradation of 2,6-dimethylphenol (DMP) by iron(lll) in aqueous solution has been investigated under monochromatic excitation (lambda = 365 nm). Depending on the nature of the iron(lll) species (monomeric, dimeric...) present in the solution, there are two different mechanisms that can induce DMP disappearance. When the monomeric species Fe(OH)(2+) is present, an attack by (OH)-O-. radicals coming from an intramolecular photoredox process accounts for half of the degradation; the second process involves a quenching between iron(lll) species in the excited state and DMP leading to 2,6-dimethyl-phenoxyl radical. in the absence of monomeric species only the second mechanism is present. The major photoproduct is 2-hydroxy-3,5-dimethylbenzoquinone, which comes from a further hydroxylation of 2,6-dimethylbenzoquinone, whose formation was evidenced only by Rash photolysis-HPLC experiments. For prolonged irradiations, the total degradation of DMP is observed.
引用
收藏
页码:389 / 397
页数:9
相关论文
共 50 条
  • [41] Selective macrocyclic copper complexes as catalysts for the polymerization of 2,6-dimethylphenol
    Gamez, P
    Steensma, R
    Driessen, WL
    Reedijk, J
    JOURNAL OF INORGANIC BIOCHEMISTRY, 2001, 86 (01) : 229 - 229
  • [42] ELECTRON PARAMAGNETIC RESONANCE OF 2,6-DIMETHYLPHENOL POLYMERIZATION BY OXIDATIVE COUPLING
    REVILLON, A
    COUBLE, P
    SPITZ, R
    COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES SERIE C, 1970, 270 (09): : 791 - &
  • [43] A spectacular increase in the polymerisation rate of 2,6-dimethylphenol induced by acetonitrile
    Gamez, P
    Simons, C
    Steensma, R
    Driessen, WL
    Challa, G
    Reedijk, J
    EUROPEAN POLYMER JOURNAL, 2001, 37 (07) : 1293 - 1296
  • [44] Phosphomolybdovanadic acid catalyzed oxidation of 2,6-dimethylphenol into para-quinone in a biphasic system
    Yulia A. Rodikova
    Elena G. Zhizhina
    Zinaida P. Pai
    Reaction Kinetics, Mechanisms and Catalysis, 2018, 124 : 469 - 485
  • [45] Phosphomolybdovanadic acid catalyzed oxidation of 2,6-dimethylphenol into para-quinone in a biphasic system
    Rodikova, Yulia A.
    Zhizhina, Elena G.
    Pai, Zinaida P.
    REACTION KINETICS MECHANISMS AND CATALYSIS, 2018, 124 (02) : 469 - 485
  • [46] OXIDATION OF 2,6-DIMETHYLPHENOL AND 2,4,6-TRIMETHYLPHENOL WITH CHLORDIOXIDE
    LINGREN, B
    SVENSK KEMISK TIDSKRIFT, 1967, 79 (10): : 572 - &
  • [47] Luminescence quenching of tris(2,2′-bipyridine)ruthenium(II) by 2,6-dimethylphenol and 4-bromo-2,6-dimethylphenol in sol-gel-processed silicate thin films
    Altamirano, M
    Senz, A
    Gsponer, HE
    JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 270 (02) : 364 - 370
  • [48] HYDROGENATION REACTION OF 2,6-DIMETHYLPHENOL ON PD/C IN THE LIQUID AND GAS PHASES
    BOLDYREVA, ME
    EGOROV, EM
    MAKSIMOV, AM
    SELIVANOV, BA
    SEMIKOLENOV, VA
    SHMIDT, YV
    YABLONSKII, GS
    KINETICS AND CATALYSIS, 1989, 30 (05) : 1087 - 1091
  • [49] CHEMISTRY OF CYCLOHEPTATRIENE .6. INTERACTION OF 2,6-DIMETHYLPHENOL AND TROPYLIUM SALTS
    VANHELDEN, R
    TERBORG, AP
    BICKEL, AF
    RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS-JOURNAL OF THE ROYAL NETHERLANDS CHEMICAL SOCIETY, 1962, 81 (07): : 599 - &
  • [50] Metal complexes catalyzed oxidative coupling of 2,6-dimethylphenol in micellar media
    Li, Xiao-Hong
    Meng, Xiang-Guang
    Pang, Qin-Hui
    Liu, Shan-Dong
    Li, Jian-Mei
    Du, Juan
    Hu, Chang-Wei
    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2010, 328 (1-2) : 88 - 92