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Citation: Ma Yu-Xin, Lu Xiang-Sheng, Wang Lian-Shun, Chen Rong-Ti. Study on the Complexation of N-(para-Substituted Phenyl) Nitrogen-Hetero-15-Crown-5 with Alkali Ions by Titration Calorimetry[J]. Acta Physico-Chimica Sinica, ;1994, 10(06): 560-564. doi: 10.3866/PKU.WHXB19940615 shu

Study on the Complexation of N-(para-Substituted Phenyl) Nitrogen-Hetero-15-Crown-5 with Alkali Ions by Titration Calorimetry

1.
Department of Chemistry, Nankai University, Tianjin 300071

Received Date: 22 February 1993
Available Online: 15 June 1994

The reactions between sodium iodide, potassium iodide and a series of N-(parasubstituted phenyl) nitrogen-hetero-15-crown-5 were studied by titration calorimetry at 25 ℃ in ethanol. It was found that the aza-crown ethers and the alkali metal ions form 1:1 complexes. The electron-donating substituent on the phenyl ring may enhance the ligation ability of the macrocyclic ligand. It was found that linear thermodynamic function relationships exist in the systems studied.
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