Apparent molar volumes and compressibilities of lanthanum, gadolinium and lutetium trifluoromethanesulfonates in dimethylsulfoxide

► Sequence of volumes and compressibilities of Ln3+ ions in DMSO is: La3+ > Gd3+ < Lu3+. ► Sequence of the partial molar volumes do not change with temperature. ► These results are the consequence of nature of the ion-solvent bonding.