Abstract
The crystal and molecular structure of3 has been determined by X-ray analysis. Thecrystal data are: triclinic, space group P'1,a = 12.999(2),b = 14.114(3),c = 16.132(3) Å,α = 91.62(2),β = 97.71(1),γ = 91.38(2)°,V = 2930.6(9) Å3,Z = 2,Dm = 1.046 g cm-3.Rotational disorder has been seen in the t-butyl groups whichwere refined isotropically. Least-squares refinementbased on F2, using 4827 observedreflections with I > 2σ(I) and 18 restraints,led to R = 0.123. The calix is found in a coneconformation. The crown ether part of the molecule isnot in a fully extended conformation but has foldsin the chain. The calix[4]crown ether-ester exhibitsmolecular recognition properties toward alkylamines.
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Kumar, M., Hundal, G., Bhalla, V. et al. Crystal Structure of a Calix[4]crown Ether-Ester and Molecular Recognition of Alkyl- and Arylalkylamines. Journal of Inclusion Phenomena 36, 461–472 (2000). https://doi.org/10.1023/A:1008134703152
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DOI: https://doi.org/10.1023/A:1008134703152