Open AccessStyrylpyrylium Salts: and NMR High-Resolution Spectroscopy (1D and 2D)
Author(s) -
Jean Claude W. Ouédraogo,
Edouard Tapsoba,
SIE SIB,
Yvonne L. Bonzi-Coulibaly
Publication year - 2010
Publication title -
international journal of spectroscopy
Language(s) - English
Resource type - Journals
eISSN - 1687-9457
pISSN - 1687-9449
DOI - 10.1155/2010/246821
Subject(s) - chemical shift , chemistry , spectroscopy , heteronuclear single quantum coherence spectroscopy , carbon fibers , nuclear magnetic resonance spectroscopy , high resolution , carbon 13 nmr , resolution (logic) , spectral line , two dimensional nuclear magnetic resonance spectroscopy , fluorine 19 nmr , analytical chemistry (journal) , materials science , stereochemistry , organic chemistry , physics , geology , astronomy , composite material , computer science , quantum mechanics , remote sensing , composite number , artificial intelligence
H1 and C13 NMR high-resolution spectroscopy (1D and 2D) (H1, H1-COSY, HSQC, HMBC) for four styrylpyrylium perchlorates were carried out and signal attributions are reported. Chemical shifts observed on C13 NMR spectra for the styrylpyrylium salts were compared with net atomic charge for carbon obtained by AM1 semiempirical calculations. The position of the styryl group present low effect on chemical shifts for carbon atoms, while the presence of methyl group led to the unshielding of the substituted carbon
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom