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Autor:
M. Anteunis, J. Gelan
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 77:447-454
Analogous long range phenomena as observed in 1,3-dioxanes [2–4] are found in 1,3-thioxanes and 1,3-dithianes. Coupling through oxygen is much less than through sulphur in 1,3-thioxanes. This is of great help in structure elucidation of 1,3-thioxan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c51db17b131257faebf6227f4e3567bb
https://doi.org/10.1002/bscb.19680770709
https://doi.org/10.1002/bscb.19680770709
Autor:
M. Anteunis, J. Gelan
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 77:423-431
The “aliphatic” region (C4-C5-C6) of the heterocyclic ring systems of 1,3-thioxanes and 1,3-dithianes is less flattened than in 1,3-dioxanes. However, thioxanes and dithianes are more readily deformed by substitution than 1,3-dioxanes, resulting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06b5b48c0513ed5b63bff9d20c580d9f
https://doi.org/10.1002/bscb.19680770707
https://doi.org/10.1002/bscb.19680770707
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 79:321-327
It is shown that the criterion of Lambert (allowing the description of ring shape) and the recent extension by Buys (allowing the calculation of torsion angles of parts of the ring) can be applied to unequal-populated conformational pairs and to anan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::494c52c4460998f19f366d872303d11c
https://doi.org/10.1002/bscb.19700790507
https://doi.org/10.1002/bscb.19700790507
Autor:
M. Anteunis, J. Gelan
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 78:599-606
The conformational equilibrium I ⇌ II in the trans-4-alkyl-6-methyl-1,3-dithianes has been computed from the study of the H-2 proton shifts at different temperatures in pyridine-chloroform-carbondisulfide mixed solvent. Thermodynamic data are found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75d991d16f39cd0396b676ace0b9413c
https://doi.org/10.1002/bscb.19690781104
https://doi.org/10.1002/bscb.19690781104
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 76:533-540
Shift values of the methyl and methylene protons of dimethylketals and dioxolanes of cyclic and acyclic carbonyl compounds are affected by substitution, f.i. the ring size in 1, 3 dioxaspiranes. No simple relation could be obtained, and the influence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48ca4806c0600d649fbe84a29baf1794
https://doi.org/10.1002/bscb.19670760906
https://doi.org/10.1002/bscb.19670760906
Autor:
J. Gelan, M. Anteunis
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 79:313-320
With the use of a previously developed method [1] based on (temperature dependent) shift parameters of AB spin systems, the thermodynamic quantities controlling conformational equilibria in trans-4-Me-6-alkyl-1,3-thioxanes have been computed (table 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::622797c398095ac50837f4018a106858
https://doi.org/10.1002/bscb.19700790506
https://doi.org/10.1002/bscb.19700790506
Publikováno v:
Polymer. 45:4499-4505
Films of conjugated polymer blends were studied by NMR relaxometry in order to improve the understanding of the nanomorphology and segmental chain mobility. Whereas optical microscopy was applied to obtain a rough impression about the surface morphol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b0522c2a12eab9702f66eb78b608342
https://doi.org/10.1016/j.polymer.2004.04.010
https://doi.org/10.1016/j.polymer.2004.04.010
Publikováno v:
Macromolecules. 36:5613-5622
By using selectively 13C-labeled sulfinyl and Gilch polymers, only noneliminated groups were demonstrated to be present in significant amounts (ca. 6.9%) in the sulfinyl conjugated OC1C10−PPV. By means of a two-step elimination procedure, this amou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7d948ad8ef8d8f23d6bf692e6d3baa3
https://doi.org/10.1021/ma030025t
https://doi.org/10.1021/ma030025t