Calorimetric study of the interaction of calcium salts with some benzo-crown ethers

  • V. P. Solov'ev
  • E. A. Vnuk
  • O. A. Raevskii
Physical Chemistry
Received:
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Conclusions

  1. 1.

    The introduction of benzene rings into the macrocyclic skeleton of 12-crown-4 and 15-crown-5 ethers leads to a significant decrease in the complex forming ability of the resulting benzoligands with Ca salts, whereby in the case of the first ether a 1:2 complex is formed besides the complex with a Ca:L ratio of 1:1.

     
  2. 2.

    It has been shown that the anion of the Ca salt has a significant influence on its complex formation with the crown ethers. In distinction from CaCl2 and Ca(SCN)2 the heats of complex formation of Ca(NO3)2 with the investigated benzo-crown ethers could not be determined.

     

Keywords

Calcium Ether Benzene CaCl2 Complex Formation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Plenum Publishing Corporation 1988

Authors and Affiliations

  • V. P. Solov'ev
    • 1
  • E. A. Vnuk
    • 1
  • O. A. Raevskii
    • 1
  1. 1.Institute of Physiologically Active SubstancesAcademy of Sciences of the USSRChernogolovka

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