17O NMR chemical shifts structure relationships in oxiranes

Autor:	Yuzo Kawada, Ryonosuke Muneyuki, Kazuo Tori, Ryoji Noyori, Hiizu Iwamura, Tadashi Sugawara
Rok vydání:	1979
Předmět:	Chemistry Stereochemistry Chemical shift Norbornadiene Organic Chemistry Ring (chemistry) Biochemistry Spectral line Paramagnetism chemistry.chemical_compound Crystallography Atomic orbital Drug Discovery Diamagnetism
Zdroj:	Tetrahedron Letters. 20:3449-3452
ISSN:	0040-4039
DOI:	10.1016/s0040-4039(01)95432-2
Popis:	Natural-abundance 17O NMR spectra have been measured for twenty one oxiranes. Their chemical shifts covering a 100 ppm range were interpreted in terms of the paramagnetic β- and diamagnetic γ-effects. In addition, through-space orbital interaction between the ethylenic π and the Walsh orbitals of the oxirane ring was suggested by a lowfield shift in norbornadiene exo -oxide.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a70b00533c0f57d2c57955d209ce8481 https://doi.org/10.1016/s0040-4039(01)95432-2 Zobrazit plný text záznamu