pyridine hydrogenfluoride; sodium nitrite 1.) O deg C, 20 min, 2.) 25 deg C, 1 h;

hydrogen fluoride T=50°C; 1 h; other aromatic halides, var. temp., also with HF-base systems;

hydrogenchloride in ethanol T=10°C; ΔS(excit.), ΔH(excit.) at 25 deg C, var. time, var. conc. of HCl, other temp.: 0 and 25 deg C; Rate constantMechanismThermodynamic data;