Synthesis, IR Spectra, Thermal Analysis and Crystal Structure of a One-Dimensional Coordination Polymer Containing Both Three- and Four-Coordinate Silver(I) Centers Bridged by Both Saccharinate and N-(2 Ligands

Abstract

A novel [Ag <inf>2</inf>(μ-sac) <inf>2</inf>(μ-hep) <inf>2</inf>] <inf>n</inf> [sac=saccharinate and hep={N-(2-hydroxyethyl)piperazine}] was synthesized and characterized. [Ag <inf>2</inf>(μ-sac) <inf>2</inf>(μ-hep) <inf>2</inf>] <inf>n</inf> consists of dimeric [Ag <inf>2</inf>(μ-sac) <inf>2</inf>] units bridged by the hep ligands, resulting a one-dimensional coordination polymer. [Ag <inf>2</inf>(μ-sac) <inf>2</inf>(μ-hep) <inf>2</inf>] <inf>n</inf> contains two different silver(I) centers with a Ag-Ag separation of 3.492(2) Å. One of the silver(I) ion is trigonal planar to the imino N and carbonyl O atoms of two sac ligands and one of the N atom of hep, while the other silver(I) ion is tetrahedrally coordinated by the N and carbonyl O atoms of two sac ligands and the N and O chelating hep ligand. © 2004 Elsevier B.V. All rights reserved.