Effect of Structural Variations on the Thermophysical Properties of Protic Ionic Liquids: Insights from Experimental and Computational Studies Khan, A.S.; Man, Z.; Bustam, M.A.; Gonfa, G.; Chong, F.K.; Ullah, Z.; Nasrullah, A.; Sarwono, A.; Ahmad, P.; Muhammad, N.; Journal of Chemical & Engineering Data 2017, 62, 2993-3003