12-MEMBERED CROWN-ETHERS - CRYSTAL-STRUCTURES OF BENZO-12-CROWN-4 ANDNAPHTHO-12-CROWN-4

Authors
SIMONOV YA DVORKIN AA FONARI MS MALINOWSKI TI LUBOCH E CYGAN A BIERNAT JF GANIN EV POPKOV YA
Citation
Ya. Simonov et al., 12-MEMBERED CROWN-ETHERS - CRYSTAL-STRUCTURES OF BENZO-12-CROWN-4 ANDNAPHTHO-12-CROWN-4, Journal of inclusion phenomena and molecular recognition in chemistry, 15(1), 1993, pp. 79-89
Citations number
20
Categorie Soggetti
Chemistry,Crystallography
Journal title
Journal of inclusion phenomena and molecular recognition in chemistry → ACNP
ISSN journal
09230750
Volume
15
Issue
1
Year of publication
1993
Pages
79 - 89
Database
ISI
SICI code
0923-0750(1993)15:1<79:1C-COB>2.0.ZU;2-L
Abstract
The crystal structures of two 12-membered crown ethers, benzo-12-crown -4 (1) and naphtho-12-crown-4 (2), have been determined by X-ray analy sis. Both structures are molecular. Compound 1 is monoclinic, P2(1)/b, a = 8.466(3), b = 8.019(3), c = 33.590(10) angstrom, gamma = 90.99(3) -degrees. The unit cell contains two crystallographically independent molecules of 1 with similar conformations. Compound 2 is also monoclin ic, P2(1)/a, a = 24.148(8), b = 14.535(4), c = 7.987(5) angstrom, gamm a = 102.87(2)-degrees. Two independent molecules in the unit cell have significantly different conformations.