A p-tert-Butyldithiacalix[4]arene-Copper(II) Complex Having Double-cone Shape of Unique Heteroditopic Inclusion Behavior

X-ray diffraction revealed a single crystal of a Cu(II) complex of p-tert-butyldithiacalix[4]arene 5 (H4L) to be [Cu3(HL)(H2L) (AcO)], in which three Cu(II) ions are sandwiched by two calixarene ligands including different guest molecules, CHCl3 and hexane, in each cone-shaped cavity.