Dinuclear silver(I) complexes of N,N '-dibenzyl-4,13-diaza-18-crown-6-ether and dibenzo-24-crown-8-ether

摘要

Three silver(I) coordination complexes of diaza- and dibenzo-crown ethers, [Ag(DDAc)](CF3SO3) (1), [Ag-2(DDAC)(CF3SO3)(2)] (2) and [Ag-2(DB24C8)(CF3SO3)(2)] (3) have been synthesized by using different molar ratios of ligand to silver triflate salt, and characterized structurally. A large excess of DDAC ligand leads to mononuclear complex 1, and a large excess of silver triflate gives rise to dinuclear complex 2, based on metal-heteroatom and metal-oxygen interactions. Ligand DB24C8 coordinates two silver(I) ions to afford dinuclear complex 3. (C) 2004 Elsevier Ltd. All rights reserved.