Synthesis and crystal structure of 5,17-di-amino-11-tert-butyl-25,26,27,28-tetra-prop-oxy-23-[(tri-phenyl-meth-yl)amino]-calix[4]arene di-chloro-methane monosolvate.

The title compound crystallizes as a di-chloro-methane monosolvate, C63H73N3O4·CH2Cl2. The main mol-ecule represents a calix[4]arene and possesses a pinched cone shape, with the two distal para-amino groups at the wide rim of the macrocycle being brought into close proximity due to steric repulsion between the bulky trityl-amino and tert-butyl groups attached to the other two distal positions of the wide rim. In the crystal, the calixarene mol-ecules are assembled by numerous C-H⋯π and van der Waals inter-actions, while the solvent mol-ecules reside in the cavities forming C-H⋯π and Cl⋯π contacts with the phenyl rings of the trityl group.