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A New Coordination Polymer Architecture with (10,3)‐a Network Containing Chiral Hydrophilic 3‐D Channels
Author(s) -
Zharkouskaya Aksana,
Buchholz Axel,
Plass Winfried
Publication year - 2005
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200500652
Subject(s) - chemistry , dihedral angle , copper , crystallography , antiferromagnetism , topology (electrical circuits) , ligand (biochemistry) , block (permutation group theory) , tetrahedron , coordination polymer , trigonal prismatic molecular geometry , schiff base , trigonal crystal system , crystal structure , molecule , geometry , octahedron , organic chemistry , hydrogen bond , condensed matter physics , physics , receptor , mathematics , biochemistry , combinatorics
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)