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Unusual conformational control of mobile mono- and diionizable

Unusual conformational control of mobile mono- and diionizable calix[4]arene ligands by alkali metal cations Vladimir S. Talanov,* Hong-Sik Hwang and Richard A. Bartsch Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061 USA. c. b. a.

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Unusual conformational control of mobile mono- and diionizable

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  1. Unusual conformational control of mobile mono- and diionizable • calix[4]arene ligands by alkali metal cations • Vladimir S. Talanov,* Hong-Sik Hwang and Richard A. Bartsch • Department of Chemistry and Biochemistry, Texas Tech University, • Lubbock, Texas 79409-1061 USA

  2. c b a 1NMR spectra (aromatic region) for (a) L1H2, (b) L1Li2, (c) L1Na2 (499.7 MHz, CDCl3, 296K).

  3. c b a 1NMR spectra (aromatic region) for (a) L1K2, (b) L1Rb2, (c) L1Cs2 (499.7 MHz, CDCl3, 296K).

  4. c b a Partial 1NMR spectra for (a) L1H2, (b) L1Li2, (c) L1Na2 (499.7 MHz, CDCl3, 296K).

  5. c b a Partial 1NMR spectra for (a) L1K2, (b) L1Rb2, (c) L1Cs2 (499.7 MHz, CDCl3, 296K).

  6. *  * *  NOESY spectrum for L6Cs in CDCl3 (499.7 MHz, 296K). * Identifies signals of ArCH2Ar protons,  identifies signal of OCH2CO protons; cross-peaks of interest are indicated by arrows.

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