Coordination of Epithio Groups ofp-tert-Butylthiacalix[4]arene in a Zn2+Complex Studied by X-Ray Crystallography

Single-crystal X-ray analysis has shown that p-tert-butylthiacalix[4]arene (H4L) binds to Zn2+ ion by bridging sulfur atoms in addition to phenolic oxygen atoms to form [Zn4L(H2L)2].