Physico-chemical exploration of solution behaviour of some metal perchlorates prevailing in N-methyl formamide with the manifestation of ion solvent consequences

• LiClO4 is more associated in N-methyl formamide than the other two perchlorates.
• Ion–solvent interaction predominates over the ion–ion interaction in all the studied solutions.
• Lowest ion–solvent interaction is seen in KClO4.

Electrical conductance of lithium perchlorate, sodium perchlorate, potassium perchlorate in pure N-methyl formamide have been measured at 298.15 K. Limiting molar conductance (Λo), association constants (KA) and co-sphere diameter (R  ) for ion-pair formation have been examined by using Fuoss conductance equation. Viscosity B-coefficient, apparent molar volume (ϕVϕV) and apparent molar adiabatic compressibility (ϕKϕK) have been achieved from viscosity (ηη), density (ρρ) and speed of sound (c  ) measurements respectively. The limiting apparent molar volume (ϕV0) and experimental slope (SV*) have been interpreted in terms of ion–solvent and ion–ion interactions respectively. The viscosity data have been analysed using Jones–Dole equation and derived parameters A and B represent ion–ion and ion–solvent interactions respectively. The c   values have been used to determine adiabatic compressibility (βSβS) and limiting apparent molar adiabatic compressibility (ϕK0).