Piperazine-functionalized C 60 and diiodine or iodine monochloride as components in forming supramolecular assemblies.

The reaction of the piperazine mono-adduct, N(CH2 CH2 )2 NC60 , with diiodine produced well ordered, black crystals of (I2 N(CH2 CH2 )2 NI2 )C60 ·2.884(C6 H6 )·0.116I2 , which contains two nearly linear N-I-I units. Reaction of N(CH2 CH2 )2 NC60 with iodine monochloride produced two materials: the dihalogen adduct, (ClIN(CH2 CH2 )2 NICl)C60 ·2.3(CS2 )·0.7(CH2 Cl2 ), when crystallization occurred rapidly from carbon disulfide/dichloromethane solution or the salt, [(N(CH2 CH2 )2 NH)C60 + ][ICl2 - ]·CS2 , when crystallization happened more slowly from toluene/dichloromethane solution where hydrolysis of the iodine monochloride by adventitious water presumably occurred.