Abstract
The crystal structure of calix[4]biscrown-7, 1, (C52H68O14), (triclinic,space group P1, Z = 2, a = 11.115 (5), b = 11.710 (5), c = 18.990 (7)Å, α = 85.12 (4), β = 93.11 (5), γ = 91.01 (5)4°,V = 2458.9 Å3, Rw = 0.0737 for 4170 ’observed‘, I ≤ 3σ (I),reflections) has been determined. It is suggested that the polyether loopswith a radius of ca. 2.1 Å are too shallow to efficiently complex theCs+ cation (radius = 1.69 Å).
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Khrifi, S., Asfari, Z., Vicens, J. et al. Calixcrown Binding to Caesium – X-Ray Structural Determination of a 1,3-Alternate Calix[4]arenebiscrown-7 Ligand. Journal of Inclusion Phenomena 29, 187–195 (1997). https://doi.org/10.1023/A:1007923507891
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DOI: https://doi.org/10.1023/A:1007923507891