Abraham, Raymond J. et al. published their research in Physical Chemistry Chemical Physics in 2016 | CAS: 64248-57-3

1,2-Difluoro-3-iodobenzene (cas: 64248-57-3) belongs to iodide derivatives. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I. This periodic order also follows the atomic radius of halogens and the length of the carbon-halogen bond.Recommanded Product: 64248-57-3

A re-investigation of 4JFF and 5JFF nuclear spin-spin couplings in substituted benzenes, a novel conformational tool was written by Abraham, Raymond J.;Cooper, M. Ashley. And the article was included in Physical Chemistry Chemical Physics in 2016.Recommanded Product: 64248-57-3 This article mentions the following:

A theor. anal. of the 4JFF and 5JFF couplings in fluorobenzenes separates the σ and π components of the substituent coefficients The π bond mechanism is dominant but the σ bond mechanism must be included to give accurate values of the couplings. For monosubstituted difluorobenzenes the 4JFF and 5JFF couplings can be predicted from the calculated π densities by linear equations. The use of additive substituent effects allows the prediction of the meta4JFF couplings for multisubstituted compounds The π dependence of the 4JFF coupling in 2,6-difluorobenzenes provides a novel and simple method of determining the torsional angle of the C1 substituent and the benzene ring for non-sym. functional groups (acetyl, carboxymethyl, dimethylamino, amide, nitro etc.). This could be used to determine the geometries of such mols. in biol. systems. The π dependence of the 4JFF coupling is also of importance in the charged species of 2,6-difluoroanilinium (4JFF 2.1 Hz) and 2,6-difluoro-N,N,N-trimethylanilinium (4JFF 0.0 Hz) due to the very different π electron densities. In the experiment, the researchers used many compounds, for example, 1,2-Difluoro-3-iodobenzene (cas: 64248-57-3Recommanded Product: 64248-57-3).

1,2-Difluoro-3-iodobenzene (cas: 64248-57-3) belongs to iodide derivatives. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I. This periodic order also follows the atomic radius of halogens and the length of the carbon-halogen bond.Recommanded Product: 64248-57-3

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com