Cocrystallization of C<sub>60</sub> or C<sub>70</sub> with the Bowl-Shaped Hydrocarbon Hexakis[(<i>E</i>)-3,3-dimethyl-1-butenyl]benzene To Form Chains of Clamshell Assemblies
作者:Kamran B. Ghiassi、Susanne Y. Chen、Peter Prinz、Armin de Meijere、Marilyn M. Olmstead、Alan L. Balch
DOI:10.1021/cg500603c
日期:2014.8.6
The bowl-shaped hydrocarbon hexakis[(E)-3,3-dimethyl-1-butenyl]benzene (HB) has been cocrystallized with either C-60 or C-70 to form clamshell-like assemblies with the fullerenes residing within the concave surfaces of two HB molecules. The structures of these two crystals have been determined by single-crystal X-ray diffraction. The HB molecules exhibit back-to-back stacking and close contacts in both cocrystals. This trait is remarkably similar to the packing seen in cases in which fullerenes cocrystallize with M-II(OEP), where OEP is the dianion of octaethylporphyrin and M is generally Ni or Co. The C-60 structure features an ordered cage with a disordered solvent position, while the C-70 structure exhibits two orientations of the cage, all other components being ordered.