An S-linked, heterocyclic calix[3]arene analogue 2 is prepared by cond
ensation of a dichloro-1,3,5-triazine with sulfide ion. X-ray structur
al analysis shows that 2 is approximately disk shaped in the solid sta
te, while molecular modelling indicates a high degree of conformationa
l mobility. (C) 1997 Elsevier Science Ltd.