ISSN:
1573-1111
Keywords:
X-ray crystal structure analysis
;
cyclic oligomer ofp-tert-butylphenol and formaldehyde, calixarene conformation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Monoclinic prisms were obtained by slow evaporation of a pyridine solution ofp-tert-butylcalix[8]arene: space groupP21/c,a=20.312(3),b=23.020(2),c=20.006(6) Å; β=113.05(2)0;V=8707.6 Å3;Z=4. Refinement led to anR value of 0.166 for 4231 reflections which, although high, is sufficient to establish the conformation of the molecule as a pleated loop in which the eight hydroxyl groups are arranged in a slightly undulating, almost planar, intramolecularly hydrogen bonded cyclic array. The possible inferences for the conformation ofp-tert-butylcalix[8]arene in solution are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00657496
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