Aqua(4-hydroxypyridine-2,6-dicarboxylato)(1,10-phenanothroline)copper(II) 4.5-hydrate

Abstract

The title compound, [Cu(C7H3NO5)(C12H8N2)(H2O)]·4.5H2O or [Cu(hypydc)(phen)(H2O)]·4.5H2O (phen is 1,10-phenanthroline and hypydcH2 is 4-hydroxy­pyridine-2,6-dicarboxylic acid), was obtained by the reaction of copper(II) nitrate hexa­hydrate with the proton-transfer compound (phenH)2(hypydc) in aqueous solution. Both the cationic and the anionic fragments of the proton-transfer compound are involved in complexation. Each CuII atom has a distorted octa­hedral geometry. It is hexa­coordinated by three O atoms and three N atoms, from one phen fragment (as bidentate ligand), one (hypydc)2− unit (as tridentate ligand) and a water mol­ecule. In the crystal structure, O—H⋯O and C—H⋯O hydrogen bonds, and π–π stacking inter­actions [centroid-to-centroid distance 3.5642 (11) Å] between the phen ring systems, contribute to the formation of a three-dimensional supra­molecular structure.

A brief review on formation of (H2O)n clusters in supramolecular proton transfer compounds and their complexes

“…9). The (H 2 O) 15 cluster by crystal structure of (pipzH 2 ) 3 [Nd(pydc) 3 ] 2 .15.33H 2 O compound [9], as could make (H 2 O) cluster in previous section, forms simultaneously a branched-cage cluster. The 10 water molecules form the cage cluster with 5 molecules as a branch in this cluster (Fig.…”

“…10). The (H 2 O) 9 cluster created by crystal structure of [Cu(hypydc)(phen)(H 2 O)].4.5H 2 O (hypydcH 2 = 4-hydroxypyridine-2,6-dicarboxylic acid and phen = 1,10-phenanothroline) [15], is placed after stated above-mentioned water clusters (Fig. 11).…”

“…The present brief review deals with (H 2 O) n clusters, identified/observed crystallographically upon 170 crystal structures of synthesized coordination compounds based upon proton transfer compounds by Hossein Aghabozorg's research groups since 2000. The structural details of water clusters, (H 2 O) n , n = 2, 3,4,5,6,7,8,9,15,16 and are described systematically. …”

Synthesis, Crystal Structure, Spectroscopic, Electrochemical and Antimicrobial Properties of Cu(II) Complex with the Mixed Ligands of 2,9‐Dimethyl‐1,10‐phenanthroline and 4‐Hydroxypyridine‐2,6‐dicarboxylic Acid

“…Two complexes of Cu(II) with chelidamic acid, 1,10-phenanthroline and neocuproine were synthesized. 37,38 The title complex is different from another one that has been synthesized by chelidamic acid and neocuproine in crystal system, space group, cell parameters and uncoordinated water molecules, however in both complexes one chelidamate and one neocuproine have coordinated to Cu(II) atom. The Cu(II) atoms in complex adopt a distorted square-pyramidal coordination geometry being pentacoordinated by one N and two O atoms of 4-hydroxypyridine-2,6-dicarboxylate anion and two N atoms of 2,9-dimethyl-1,10-phenanthroline (dmp) molecule.…”

Butane-1,4-diammonium bis(pyridine-2,6-dicarboxylato)cuprate(II) trihydrate

“…This has resulted in the formation of new proton-transfer systems, such as (pipzH 2 )(pydc) (Aghabozorg et al, 2006). In this regard, we have so far synthesized several metal organic complexes (Aghabozorg, et al, 2008a;2008b, 2008c.…”