Conformations of cycloundecane.
Cycloundecane (1) was shown to exist at -183.1 degrees C as a mixture of the [12323] (approximately 59%) and [335] (approximately 41%) conformations. Populations were determined from the (13)C NMR spectrum, and assignments were based on the (13)C spectra, calculated free energies and chemical shifts, and information from the literature, including X-ray studies of solid derivatives and calculated barriers.
Pawar
Diwakar M
DM
Department of Chemistry, Jackson State University, Jackson, Mississippi 39217-0510, USA.
Brown
Judge
J
Chen
Kuo-Hsiang
KH
Allinger
Norman L
NL
Noe
Eric A
EA
D000473:Alkanes / Q000737:chemistry*; D003500:Cyclization; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D013696:Temperature
D000473:Alkanes; C022884:undecane