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Mendeley readers
Attention Score in Context
| Title |
Can Variations of 1H NMR Chemical Shifts in Benzene Substituted with an Electron‐Accepting (NO2)/Donating (NH2) Group be Explained in Terms of Resonance Effects of Substituents?
|
|---|---|
| Published in |
Chemistry - An Asian Journal, March 2018
|
| DOI | 10.1002/asia.201800137 |
| Pubmed ID | |
| Authors |
Marija Baranac‐Stojanović |
| Abstract |
The classical textbook explanation of variations of 1 H NMR chemical shifts in benzenes bearing an electron-donating (NH2 ) or an electron-withdrawing (NO2 ) group in terms of substituent resonance effects was examined by analyzing molecular orbital contributions to the total shielding. It was found that the π-electronic system showed a more pronounced shielding effect on all ring hydrogen atoms, relative to benzene, irrespective of substituent +R/-R effects. For the latter, this was in contrast to the traditional explanations of downfield shift of nitrobenzene proton resonances, which were found to be determined by the σ-electronic system and oxygen in-plane lone pairs. In aniline, the +R effect of NH2 group can be used to fully explain the upfield position of meta-H signals and partly the upfield position of para-H signals, the latter also being influenced by the σ-system. The position of the lowest frequency signal of ortho-Hs was fully determined by σ-electrons. |
Mendeley readers
The data shown below were compiled from readership statistics for 21 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 21 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 5 | 24% |
| Student > Ph. D. Student | 3 | 14% |
| Student > Master | 3 | 14% |
| Other | 1 | 5% |
| Student > Postgraduate | 1 | 5% |
| Other | 0 | 0% |
| Unknown | 8 | 38% |
| Readers by discipline | Count | As % |
|---|---|---|
| Chemistry | 7 | 33% |
| Biochemistry, Genetics and Molecular Biology | 2 | 10% |
| Agricultural and Biological Sciences | 1 | 5% |
| Medicine and Dentistry | 1 | 5% |
| Unknown | 10 | 48% |
Attention Score in Context
This research output has an Altmetric Attention Score of 8. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 March 2018.
All research outputs
#4,555,638
of 24,477,448 outputs
Outputs from Chemistry - An Asian Journal
#325
of 5,861 outputs
Outputs of similar age
#84,722
of 336,514 outputs
Outputs of similar age from Chemistry - An Asian Journal
#12
of 139 outputs
Altmetric has tracked 24,477,448 research outputs across all sources so far. Compared to these this one has done well and is in the 81st percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 5,861 research outputs from this source. They receive a mean Attention Score of 1.8. This one has done particularly well, scoring higher than 94% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 336,514 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 74% of its contemporaries.
We're also able to compare this research output to 139 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 91% of its contemporaries.