Dicarbonyl chelates from 1-cymantrenylalkylamides with the dendrite structure: formation, photochromism, and kinetics of dark reaction with carbon monoxide

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• 作者：S. Kelbysheva ; L. N. Telegina ; O. V. Abramova ; T. V. Strelkova…
• 关键词：Key wordscymantrene ; amides ; photolysis ; dicarbonyl chelates ; carbon monoxide ; photochromism
• 刊名：Russian Chemical Bulletin
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：64
• 期：11
• 页码：2646-2654
• 全文大小：401 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Chemistry
  Organic Chemistry
  Inorganic Chemistry
  Russian Library of Science
  
• 出版者：Springer New York
• ISSN：1573-9171
• 卷排序：64

文摘

Photolysis of carboxamides of the dendrite structure with aminomethyland 1-aminoethylcymantrenes leads to the formation of six-membered dicarbonyl chelates with the Mn—O bond which are stable in solutions. The chelates in the reversed dark reaction with carbon monoxide give the starting tricarbonyl complexes. The formation of the chelates and their dark reaction are accompanied by the reversible change of color by the compounds. The rate determining step of the thermal reaction of chelates with CO is a chelate ring opening with the ligand substitution by the S_N1 mechanism. A possibility of solvent-free photoinduced ligand-exchange reaction in a number of cymantrene derivatives was demonstrated.