Zobrazeno 1 - 10
of 239
pro vyhledávání: '"Zeev Luz"'
Publikováno v:
Magnetic Resonance in Chemistry. 52:581-594
Enantiodiscrimination in the NMR spectra of flexible prochiral solutes dissolved in chiral liquid crystals (CLCs) is reviewed and compared with the analog phenomenon in such rigid solutes. In rigid prochiral solutes, the discrimination is brought abo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba79652e58e712d371084038256ec302
https://doi.org/10.1002/mrc.4110
https://doi.org/10.1002/mrc.4110
Autor:
Asher Baram, Zeev Luz
Publikováno v:
Israel Journal of Chemistry. 54:196-206
The moments of truncated dynamic magnetic resonance spectra, Mn(L), are expanded in terms of power series of the integration range −L to +L. The expansion consists of three contributions: 1) an L-independent term that, for the first three moments (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43e3f13c2ea417101b67b2a3c5215cb3
https://doi.org/10.1002/ijch.201300127
https://doi.org/10.1002/ijch.201300127
Autor:
Noga Friedman, Xiaolin Cao, Zeev Luz, Hailin Zheng, Herbert Zimmermann, Ellen J. Wachtel, Raphy Poupko, Teresa B. Freedman, Laurence A. Nafie
Publikováno v:
The Journal of Physical Chemistry A
The paper concerns the structural and optical isomers of nonamethoxy-tribenzocyclononene (compound 1). In the first part of the paper it is shown that 1 exists in two structural isomers: a rigid crown (c-1) with C3 symmetry and a flexible saddle (s-1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f31d498bd129760f8a1741e9b1088f33
https://doi.org/10.1021/jp073329g
https://doi.org/10.1021/jp073329g
Publikováno v:
Chemical Society Reviews
Chemical Society Reviews, Royal Society of Chemistry, 2015, 44 (8), pp.2330-2375
Chemical Society Reviews, Royal Society of Chemistry, 2015, 44 (8), pp.2330-2375
The splitting of signals in the NMR spectra originating from enantiotopic sites in prochiral molecules when dissolved in chiral solvents is referred to as spectral enantiotopic discrimination. This phenomenon is particularly noticeable in chiral liqu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a24c9980722137b6e2a94ded4f2161be
https://hal.archives-ouvertes.fr/hal-02314352
https://hal.archives-ouvertes.fr/hal-02314352
Publikováno v:
The Journal of Physical Chemistry B
Cyclotriveratrylene (CTV), or hexamethoxy tribenzocyclononatriene (hexamethoxy-TBCN) and other peripherally hexa-(or tri-)substituted TBCN were so far only known to exist in their crown form. Attempts to detect the corresponding saddle isomers failed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d88dad46966e18b79cafcf9b7b4d913
https://doi.org/10.1021/jp040482r
https://doi.org/10.1021/jp040482r
Publikováno v:
The Journal of Chemical Physics
We report a 13C NMR investigation of 1,2,3,5,6,7-hexaoctyloxy-rufigallol in the solid and columnar phases using various 2H- and 13C-labeled isotopomers. The measurements were performed under both static and magic-angle spinning conditions. The confor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfa4fc84c0af6269d79b1576126c7ef5
https://doi.org/10.1063/1.1576753
https://doi.org/10.1063/1.1576753
Publikováno v:
Journal of Physical Chemistry B
Separated local field NMR spectroscopy was used to obtain 1H−13C dipolar interactions in the solid and columnar phases of the discotic compound 1,2,3,5,6,7-hexaoctyloxy-rufigallol (RufH8O). The couplings were measured and assigned by a variety of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::478b6f782dc24b0095b6daf36e6b3810
https://doi.org/10.1021/jp0274381
https://doi.org/10.1021/jp0274381
Publikováno v:
Molecular Crystals and Liquid Crystals
A new homologous series of compounds, nonaalkanoyloxy tribenzocyclononene (TBCN-n, where n is the number of carbons per side chain) with n = 2 to 14 was synthesized. The compounds exist in two isomeric forms, crown and saddle. For sufficiently long s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74fd081649902434c2b6bfee61534620
https://doi.org/10.1080/714965602
https://doi.org/10.1080/714965602
Publikováno v:
Journal of the American Chemical Society
Nona-alkanoyloxy tribenzocyclononene (CTV-n, where n is the number of carbons in the side chains) were prepared for n = 2 to 14. The homologues of this series appear in two stable isomeric forms, rigid crown and flexible saddle. We report on their is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e27fe890c5a3ec0079808046fad14427
https://doi.org/10.1021/ja020889e
https://doi.org/10.1021/ja020889e
Publikováno v:
Progress in Nuclear Magnetic Resonance Spectroscopy. 41:83-113
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a1575eb44354642a2d180c181c3c1d5
https://doi.org/10.1016/s0079-6565(02)00016-x
https://doi.org/10.1016/s0079-6565(02)00016-x