Four fanlike organic compounds, 1-ethoxybenzene (EOB), 1-butoxybenzene (BOB), 1- dodecyloxybenzene (DOB), and 1-(dodecyloxy)-2-methoxybenzene (DOMB), were chosen as guests, and β-cyclodextrin (β-CD) and its two derivatives, mono (2-O-2-methyl)-β-CD and mono (2-O-2-hydroxy-propyl)-β-CD, were chosen as hosts. Energy changes involved in host− guest inclusion processes were clearly obtained by applying semiempirical PM3 ...