By making use of a novel diastereotopicity probe, namely C(CF(3))(2)OH, it has been possible to measure by very low temperature (19)F NMR spectroscopy the elusive aryl-aryl rotation barriers of biphenyls bearing an OH or F group in one ortho position. The experimental values (5.4 and 4.4 kcal mol(-1), respectively) are matched by those from ab initio calculations (5.3 and 4.3 kcal mol(-1), respectively).
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/chem.200903372 | DOI Listing |
Publication Analysis
Top Keywords
kcal mol-1
8
torsional barriers
4
barriers 2-hydroxy-
4
2-hydroxy- 2-fluorobiphenyl
4
2-fluorobiphenyl small
4
small measurable
4
measurable making
4
making novel
4
novel diastereotopicity
4
diastereotopicity probe
4
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!