S(ACETAMIDO)-25,26,27,28-TETRAPROPOXYCALIX[4]ARENE - THE FIRST EXAMPLE OF 2 DIFFERENT PINCHED CONE CONFORMATIONS IN THE SOLID-STATE

Citation
W. Verboom et al., S(ACETAMIDO)-25,26,27,28-TETRAPROPOXYCALIX[4]ARENE - THE FIRST EXAMPLE OF 2 DIFFERENT PINCHED CONE CONFORMATIONS IN THE SOLID-STATE, Recueil des travaux chimiques des Pays-Bas, 115(9), 1996, pp. 402
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry
ISSN journal
0165-0513
Volume
115
Issue
9
Year of publication
1996
Database
ISI
SICI code
0165-0513(1996)115:9<402:S-TFE>2.0.ZU;2-B
Abstract
Crystals of s(acetamido)-25,26,27,28-tetrapropoxycalix[4]arene . ethyl -acetate (1:1), C44H54N2O6 . C4H8O2 are triclinic, space group P-1, a = 13.319(4), b = 15.519(4), c = 22.386(6) Angstrom, alpha = 104.73(3), beta = 99.02(3), gamma = 95.30(3)degrees, T = 100(5) K, Z = 4. The as ymmetric unit contains two calix[4]arene molecules and two ethyl aceta te molecules. The two calix[4]arene molecules have different pinched c one conformations. The phenyl rings show small but consistent boat-lik e deformations. The final R factor is 7.9%.