Pyridine derivative

Dielectricconstant (εr) at 343 K

Reference

2-amino-4-methylpyridinium 2-chloro 4-nitro benzoate

11.5

Present work

2-amino-5-chloropyridinium-4-carboxybutanoate

9.4

[40]

2-aminomethylpyridinium picrate

38

[40]

4-aminopyridinium p-amino benzoate

420

[40]

Dimethyl amino pyridinium 4-nitro phenolate

1180

[40]