A New Coordination Polymer Architecture with (10,3)-a Network Containing Chiral Hydrophilic 3-D Channels

✍ Scribed by Aksana Zharkouskaya; Axel Buchholz; Winfried Plass

• Book ID: 102168540
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 213 KB
• Volume: 2005
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200500652

✦ Synopsis

Abstract

The triaminoguanidine‐based Schiff‐base ligand H~5~L^OH^ reacts with copper(II) ions to afford a three‐dimensional coordination polymer with (10,3)‐a topology which is solely assembled by a single trigonal molecular building block {Cu~3~L^OH^}^+^. The unusual bridging mode of the phenolate oxygen atoms between the trigonal building blocks leads to a dihedral angle between the interlinked {Cu~3~L^OH^}^+^ units of 71°. The (10,3)‐a topology of the singular network results in a rather large void space of about 56 % that is established by interpenetrated chiral channels with a diameter limited by pseudo‐tetrahedral cavities defined by non‐coordinating phenolate hydroxy groups of the ligand. Additional information to establish the composition is derived from elemental analysis and TGA measurements. For the coordination polymer an overall antiferromagnetic behavior is observed. The spin‐frustrated trinuclear building blocks {Cu~3~L^OH^}^+^ are antiferromagnetically coupled via the bis(phenoxide)‐bridged dinuclear copper(II) moieties for which a dihedral angle of 132° is observed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)