A Simple One‐Step Synthesis of Symmetrical Thiocrown Ethers and the Molecular Structure of an Unusual Sandwich‐like Tetrametallic Silver Thiocrown Ether Complex

Abstract

Also in the presence of functional groups, the 2 + 2 cyclization of 1 and 2 to give thiocrown ethers 3 is achieved in good yields, if B(OiPr)3/Al(OiPr)3) is present. Furthermore a sandwich-like cationic complex [Ag4-(3b)2]4+ was prepared with 3b. This complex is also stable in solution.