Analysis of Oscillation Reaction induced by Vanadium Complex-Identification of Trigger and Cycle Reactions

2011 Fiscal Year Final Research Report

• Project/Area Number: 21550057
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic chemistry
• Research Institution: University of Toyama
• Principal Investigator: KANAMORI Hiroshi 富山大学, 大学院・理工学研究部, 教授 (00019001)
• Co-Investigator(Kenkyū-buntansha): MATSUGO Seiichi 金沢大学, 大学院・自然科学研究科, 教授 (30148126) ; AIZAWA Sen-ichi 富山大学, 大学院・理工学研究部, 教授 (60231099) ; KATAOKA Hiroshi 富山大学, 人間発達科学部, 准教授 (10361940)
• Project Period (FY): 2009 – 2011
• Keywords: 振動反応 / バナジウム錯体 / ジクロロメタン

Research Abstract

Generally oscillation reaction occurs in a complex system containing oxidant, reductant, substrate, metal catalyst, and acid. However, we found at first time a unique oscillation system in dichloromethane which contains only vanadium complex. In order to make clear this interesting phenomenon, we investigated the system using a variety of methods and finally found the following interesting results : 1. The oscillation reaction occurs only in dichlromethane solution of[ V(IV) OCl_2(bpy)] or[ V(III) Cl_3(CH_3CN)(bpy)]. The oscillation reaction does not occur in any related halomethane solvent such as chloroform and dichloroethane. 2. The oscillation reaction was found to be aperiodic at a constant temperature. However, when the temperature pulse was applied to the solution, the oscillation become to follow the pulse, resulting in a periodic behavior. 3. Photo-degradation of dichloromethane triggers the oscillation reaction and peroxy-radical species generated in the decomposition reaction works as an oxidant. 4. The observed oscillation reaction can be simulated mathematically in terms of the Cobaltlater model.

Research Products

• [Journal Article] A Vanadium-based Chemical Oscillator : Identification of Chemical Species Responsible for the Redox Reaction and Construction of a Simplified Model (2012)
  • Author(s): Kan Kanamori, Hiroshi Kataoka, and Seiichi Matsugo
  • Journal Title: European Journal of Inorganic Chemistry Volume: (in press)
  • Peer Reviewed
• [Journal Article] Chemical oscillation of vanadium complexes : Simple and aperiodic systems (2011)
  • Author(s): Seiichi Matsugo and Kan Kanamori
  • Journal Title: Coordination Chemistry Reviews Volume: Vol.255 Pages: 2388-2397
  • Peer Reviewed
• [Journal Article] A Vanadium-based Chemical Oscillator (2010)
  • Author(s): Kan Kanamori, Yuya Shirosaka, Yukie Sakai, Toshiki Kanamori, Yasuyo Mukai, Kenji Kubo, Yu Nakajima, Naoki Wada, Seiichi Matsugo
  • Journal Title: Chemistry Letters Volume: Vol.39, No.6 Pages: 624-626
  • Peer Reviewed
• [Presentation] A Vanadium-based Oscillation Reaction (2012)
  • Author(s): Seiichi Matsugo, Yasuhiro Yamaguchi, Yu Nakajima, Kenji Kubo, Naoki Wada, Akira Ukae, Toshiki Kanamori, Kan Kanamori, Kenneth Kustin
  • Organizer: The 7th International Symposium on the Chemistry and Biological Chemistry of Vanadium
  • Place of Presentation: Toyama, Japan
  • Year and Date: 2012-10-06
• [Presentation] A Vanadium-based Chemical Oscillator-Identification of Chemical Species Responsible for the Redox Reaction (2011)
  • Author(s): Kan Kanamori, Hiroshi Kataoka, and Seiichi Matsugo
  • Organizer: Zing Coordination Chemistry Conference
  • Place of Presentation: Xcaret, Mexico
  • Year and Date: 2011-12-11
• [Presentation] バナジウム錯体誘起振動反応の温度依存性 (2009)
  • Author(s): 金盛稔生、坂井幸恵、和田直樹、松郷誠一、金森寛
  • Organizer: 第59回錯体化学討論会
  • Place of Presentation: 長崎大学
  • Year and Date: 2009-09-25