Zobrazeno 1 - 10
of 15
pro vyhledávání: '"R. E. Klinck"'
Publikováno v:
Canadian Journal of Chemistry. 57:803-806
The 13Cmr spectra of 5β,10β-dimethyldecalin, 10β-decal-5β-ol, and 10β-methyldecal-5β-ol have been examined as a function of temperature to determine the barriers to conformational inversion. Lineshape fitting was employed to extract rate data f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e343bc12b741724cd407418e7c577ef
https://doi.org/10.1139/v79-132
https://doi.org/10.1139/v79-132
Publikováno v:
Organic Magnetic Resonance. 12:561-568
The 13C spectra of a series of 21 cis-decalins, 17 of which bear 10-methyl substituents, have been recorded to examine geometrical and conformational effects on the 13C shieldings. Although the data for a few of the simpler examples have been reporte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b78baa501397c844b7badaa2efe31e0
https://doi.org/10.1002/mrc.1270121004
https://doi.org/10.1002/mrc.1270121004
Publikováno v:
Canadian Journal of Chemistry. 54:1464-1471
Variable temperature studies of 1H and 13C spectra have been employed to establish the geometry of 1,3,5-triphenylpentadienyllithium in tetrahydrofuran solution. These data show that the anion exists in both W and S forms, which are of comparable ene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abd4a6f8e2551c1689e21cc2d0440d5d
https://doi.org/10.1139/v76-210
https://doi.org/10.1139/v76-210
Autor:
J. B. Stothers, R. E. Klinck
Publikováno v:
Canadian Journal of Chemistry. 54:3267-3271
Complete lineshape analyses of the 13C nmr signals of the ortho and meta carbons have been carried out for two p-substituted benzaldehydes in methylene chloride-d2 and toluene-d8 solutions over a wide temperature range. The activation parameters have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28104d7010c1fed244c9799c51c2f478
https://doi.org/10.1139/v76-466
https://doi.org/10.1139/v76-466
Autor:
R. E. Klinck
Publikováno v:
Canadian Journal of Chemistry. 51:787-791
Previous data for the temperature dependence of the proton chemical shifts of two para-substituted benzaldehydes in toluene solution are re-investigated using improved methods for obtaining the proton chemical shifts in the associated and unassociate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19ea0ed77fdafb9e70e882038fc4a8f8
https://doi.org/10.1139/v73-119
https://doi.org/10.1139/v73-119
Autor:
R. E. Klinck, J. B. Stothers
Publikováno v:
Canadian Journal of Chemistry. 40:2329-2338
The chemical shifts for the aromatic and formyl protons of a series of substituted benzaldehydes have been obtained in a number of solvents. Relative to the shifts observed in chloroform, pronounced effects are observed in acetone and benzene solutio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12e7bcd59f24f972bcb5c08d5d4a7d83
https://doi.org/10.1139/v62-356
https://doi.org/10.1139/v62-356
Autor:
R. E. Klinck, J. B. Stothers
Publikováno v:
Canadian Journal of Chemistry. 44:37-44
The temperature dependence of the proton chemical shifts of four substituted benzaldehydes in toluene solution has been measured. From these results, estimates have been made of the enthalpies and entropies of formation of the stereospecific solute
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0b37cb17e5780fc363b1f5a7df7b579
https://doi.org/10.1139/v66-007
https://doi.org/10.1139/v66-007
Autor:
J. B. Stothers, R. E. Klinck
Publikováno v:
Canadian Journal of Chemistry. 44:45-51
The effects of structure on the shielding of formyl protons of aliphatic aldehydes have been examined. The survey included examples of acyclic, alicyclic, and α, β-unsaturated aldehydes. The potential use of these results as an aid for structural e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cda539c4d7fbfc428d506e102b97dbe5
https://doi.org/10.1139/v66-008
https://doi.org/10.1139/v66-008
Publikováno v:
Canadian Journal of Chemistry. 45:213-219
The temperature dependence of the formyl proton shieldings of 9-anthraldehyde and 9-phenanthraldehyde in chloroform solutions has been measured. Four concentrations in the range 0.5–5.0 mole % were examined over the temperature interval − 60 to +
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd3fce06ad1dea0ed14241627ca4493f
https://doi.org/10.1139/v67-042
https://doi.org/10.1139/v67-042
Autor:
R. E. Klinck, J. B. Stothers
Publikováno v:
Canadian Journal of Chemistry. 40:1071-1081
Chemical shift data for the formyl proton in some 30 aromatic aldehydes are reported. It was found that meta- and para-substituted benzaldehydes exhibited this peak in the range 9.65–10.20 δ, while ortho-substituted compounds appear at lower field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1c3d6d917a46883a1a95079a85bf270
https://doi.org/10.1139/v62-165
https://doi.org/10.1139/v62-165