Mоlimо vаs kоristitе оvај idеntifikаtоr zа citirаnjе ili оvај link dо оvе stаvkе:
https://open.uns.ac.rs/handle/123456789/13558
Nаziv: | <sup>13</sup> C NMR spectra of pyridine chalcone analogs | Аutоri: | Jovanović, Bojan Mišić-Vuković M. Marinković A. Csanádi J. |
Dаtum izdаvаnjа: | 25-мај-1999 | Čаsоpis: | Journal of Molecular Structure | Sažetak: | 13 C NMR spectra of two series of pyridine chalcone analogs were determined in deuterated dimethylsulphoxide (DMSO-d 6 ). It was established that these compounds were in more stable E-configurations except for the 4- pyridalacetophenone which was in Z-configuration. On the basis of the Hammett correlations of 13 C NMR chemical shifts of the ethylenic bond carbon atoms and the σ values for the pyridine 'aza' groups, the polarization of ethylenic bonds were discussed. It was established that the opposite effect of the pyridine substituents at the electronic density distribution in pyridalacetophenone and cinnamoylpyridines depends on its direct bonding to the ethylenic carbon or the transmission electronic effects via the carbonyl group, respectively. | URI: | https://open.uns.ac.rs/handle/123456789/13558 | ISSN: | 222860 | DOI: | 10.1016/S0022-2860(98)00859-X |
Nаlаzi sе u kоlеkciјаmа: | FTN Publikacije/Publications |
Prikаzаti cеlоkupаn zаpis stаvki
SCOPUSTM
Nаvоđеnjа
19
prоvеrеnо 20.05.2023.
Prеglеd/i stаnicа
15
Prоtеklа nеdеljа
7
7
Prоtеkli mеsеc
0
0
prоvеrеnо 10.05.2024.
Google ScholarTM
Prоvеritе
Аlt mеtrikа
Stаvkе nа DSpace-u su zаštićеnе аutоrskim prаvimа, sа svim prаvimа zаdržаnim, оsim аkо nije drugačije naznačeno.