Study of the Halogen Bonding between Pyridine and Perfluoroalkyl Iodide in Solution Phase Using the Combination of FTIR and ¹⁹F NMR

Table 2

Halogen-bonding association constants for pyridine/iso-C₃F₇I and pyridine/1-C₃F₇I systems in various solvents.

Solvent	Iso-C3F7I	1-C3F7I
Cyclohexane	21.5±5.4	10.2±2.0
Hexane	13.0±2.7	8.4±1.7
Chloroform	3.8±0.9	2.6±0.7
Acetone	3.1±0.8	1.9±0.6
Acetonitrile	3.6±0.8	2.4±0.6