One-dimensional and two-dimensional coordination polymers constructed from copper(II) nodes and polycarboxylato spacers: Synthesis, crystal structures and magnetic properties

Abstract Four new coordination polymers were obtained by employing polycarboxylato spacers and cationic copper(II) complexes as nodes: ∞ 2 [Cu 3 (trim) 2 (NH 3 ) 6 (H 2 O) 3 ] ( 1 ); ∞ 1 [Cu(tmen)(dhtp)] ( 2 ), ∞ 1 [Cu(tmen)(hitp)(H 2 O)] ( 3 ), ∞ 1 [Cu(tmen)(nitp)] ( 4 ). (H 3 trim = trimesic acid, H 2 dhtp = 2,5-dihydroxy-terephthalic acid; H 2 hitp = 5-hydroxy-isophthalic acid, H 2 nitp = 5-nitro-isophthalic acid; tmen =  N , N , N ′, N ′-tetramethyl-ethylenediamine). The crystal structures of the four compounds have been solved. Compound 1 consists of 2D coordination polymers with heart-shaped meshes, while compounds 2 – 4 contain infinite zigzag chains. The role of the hydrogen bond interactions in sustaining the supramolecular solid-state architectures in compounds 1 and 3 is discussed. The cryomagnetic investigation of compounds 1 , 2 , and 4 reveals antiferromagnetic interactions between the copper ions.