Abstract It has been shown that host compound 1,1,6,6-tetraphenylhexa-2,4-diyne-1,6-diol is able to include polar guests and now we report on its ability to form clathrate compounds with apolar guests. The structures of this host with cyclohexane (1) and the ortho (2), meta (3) and para (4) xylenes have been determined and are discussed. Crystal data: (1) 2C30H22O2C6H12, M r = 913.20 g mol−1, mono-clinic, C2/c, a = 22.851(6), b = 14.010(2), c = 17.076(6) A, β = 108.71(3)°, V = 5178(2) A3, Z = 4, D c = 1.17g cm−3, N = 3326, R = 0.092. (2) 2C30H22O21 ½C8H10, M r = 1976.5 g mol−1, triclinic, P 1, a = 13.185(3), b = 15.466(3), c = 16.573(2) A, α = 96.39(13)°, β = 106.96(15)°, γ = 114.94(18)°, V = 2822(2) A3, Z = 2, D c = 1.16 g cm−3, N = 6152, R = 0.075. (3) 2C30H22O21 ½C8H10, M r = 1976.5 g mol−1, triclinic, P 1, a = 13.267(5), b = 15.453(3), c = 16.654(5) A, α = 97.12(2)°, β = 107.09(3)°, γ = 114.68(3)°, V = 2843(2) A3, Z = 2, D c = 1.15 g cm−3, N = 6505, R = 0.083. (4) 2C30H22O21 ½C8H10, M r = 1976.5 g mol...