Amine guest size and hydrogen-bonding influence the structures of p-tert-butylcalix[4]arene inclusions
作者： Eric B. Brouwer , Kostantin A. Udachin , Gary D. Enright , John A. Ripmeester
DOI: 10.1039/B001274M
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摘要: A novel structure involving a 2(p-tert-butylcalix[4]arene)·3.5(1,4-butanediamine) inclusion compound shows amine sites both exo and endo to the cavity, with the hydrogen-bonding itself as well host hydroxyl groups; for bulky amines large pKa values, steric factors are more important than basicity, formation of 1∶1, high-symmetry host–guest is preferred over a low-symmetry hydrogen-bonded structure.
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