2-({4-[(1H-Imidazol-2-ylsulfanyl)methyl]-2,5-dimethylbenzyl}sulfanyl)-1H-imidazole

The title compound, C16H18N4S2, was prepared by the substitution reaction of two equivalents of 2-mercaptoimidazole for every bromine substituent of 1,4-bis­(bromo­meth­yl)-2,5-dimethyl­benzene. The mol­ecule is located on a crystallographic centre of inversion and therefore adopts a trans configuration with regards to the orientation of the two sulfur atoms. An inter­molecular N—H⋯N hydrogen bond forms layers of mol­ecules parallel to (03). The dihedral angle between the central and terminal rings is 174.8 (2)°

tert-Butyl 4-cyano­phenyl carbonate

The title compound, C12H13NO3, was prepared by reacting one equivalent of di-tert-butyl dicarbonate with 4-cyano­phenol. Herringbone crystal packing is observed and there are no significant inter­molecular inter­actions

Cyanocalix[4]arenes: synthesis, crystal structures and reactivity studies

<p>Herein, we describe an improved method to synthesise mono-, di- and tetra-cyanocalix[4]arene and report their crystal structure determinations. We also report our attempts to further functionalise the cyanocalix[4]arenes into dithiadiazolyl-calix[4]arenes, and propose a hypothesis as to why the cyano group on a calix[4]arene is an extremely challenging group to modify.</p