Ring-Enlarged Dibenzo-Crown-6 Ethers. Cation Binding and X-Ray Crystal Structure of Dibenzo-22-Crown-6

 
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1993 (EN)
Ring-Enlarged Dibenzo-Crown-6 Ethers. Cation Binding and X-Ray Crystal Structure of Dibenzo-22-Crown-6 (EN)

M. Ouchi, (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
M. Ouchi, (EN)

The cation binding of dibenzo-20-crown-6 (2) and dibenzo-22-crown-6 (3) are determined by quantitative solvent extraction study. Compound 3 shows high Tl+/K+ and Tl+/Rb+ selectivity. The crystal structure of 3 is reported. Crystal data: monoclinic (P21/c), a = 7.328(1), b = 17.395(4), c = 8.939(1) Γ…, Ξ² = 102.78(1)Β°, Z = 2, R = 0.049 for 2122 reflections. The macrocycle shows a crystallographic center of symmetry with elliptical arrangement of the heteroatoms stabilized by possible C-HΒ·Β·Β·O dipolar attractions. (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Bulletin of the Chemical Society of Japan (EN)

English

1993


The Chemical Society of Japan (EN)



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