Aprotic lattice inclusions involving bulky cyclopropano hosts. Crystal structures of inclusion compounds with nitromethane and toluene

Separation of xylenes by enclathration

“…The enclathration capabilities of these host molecules with a variety of hydrocarbons and simple heterocyclic guests have been studied. 9,10 The bianthryl host H1 exhibits two polymorphic structures 11,12 and its inclusion compounds with benzene, a-ionone 13 and chlorocyclohexane 14 have been elucidated. The bifluorene host H2 also manifests two different solid forms of the apohost 15,16 and its clathrates with benzene and biphenyl have been characterised.…”

“…Only one crystal structure of host H3 has been published, that of its inclusion compound with toluene. 17 In this work, the procedure employed for each host was to dissolve it in the pure xylene isomer, the binary equimolar mixtures of two isomers and the tertiary equimolar mixture of all three isomers. The resulting crystalline products were analysed by singe crystal X-ray diffraction, NMR spectroscopy and thermal gravimetry (TG).…”

“…The structure of H1Á0.5ox crystallises in P% 1 with Z = 8. The ox guest molecules are located in the channels running along [1][2][3][4][5][6][7][8][9][10]. The packing is shown in Fig.…”