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Kinetic Study of the Ce(III)‐, Mn(II)‐, or Ferroin‐Catalyzed Belousov‐Zhabotinsky Reaction with Allylmalonic Acid
Author(s) -
Yu YuehO,
Jwo JingJer
Publication year - 2000
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200000058
Subject(s) - chemistry , catalysis , reactivity (psychology) , anaerobic exercise , medicinal chemistry , metal , inorganic chemistry , organic chemistry , medicine , physiology , alternative medicine , pathology , biology
In a stirred batch experiment and under aerobic conditions, ferroin (Fe(phen) 3 2+ ) behaves differently from Ce(III) or Mn(II) ion as a catalyst for the Belousov‐Zhabotinsky (BZ) reaction with allylmalonic acid (AMA). The effects of bromate ion, AMA, metal‐ion catalyst, and sulfuric acid on the oscillating pattern were investigated. The kinetics of the reaction of AMA with Ce(IV), Mn(III), or Fe(phen) 3 3+ ion was studied under aerobic or anaerobic conditions. The order of reactivity of metal ions toward reaction with AMA is Fe(phen) 3 3+ > Mn(III) > Ce(IV) under aerobic conditions whereas it is Mn(III) > Ce(IV) > Fe(phen) 3 3+ under anaerobic conditions. Under aerobic or anaerobic conditions, the order of reactivity of RCH(CO 2 H) 2 (R = H (MA), Me (MeMA), Et (EtMA), allyl (AMA), n ‐Bu (BuMA), Ph (PhMA), and Br (BrMA)) is PhMA > MA > BrMA > AMA > MeMA > EtMA > BuMA toward reaction with Ce(IV) ion and it is MA > PhMA > BrMA > MeMA > AMA > EtMA > BuMA toward reaction with Mn(III) ion. Under aerobic conditions, the order of reactivity of RCH(CO 2 H) 2 toward reaction with Fe(phen) 3 3+ ion is PhMA > BrMA > (MeMA, AMA) > (BuMA, EtMA) > MA. The experiment results are rationalized.