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Synthesis, Structural Characterization and Properties of Copper( II ) and Zinc( II ) Coordination Polymers with a New Bridging Chelating Ligand
Author(s) -
Yong GuoPing,
Wang ZhiYong,
Cui Yong
Publication year - 2004
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.200400218
Subject(s) - sbus , chemistry , chelation , crystallography , carboxylate , zinc , molecule , ligand (biochemistry) , stacking , denticity , stereochemistry , copper , coordination polymer , polymer , polymer chemistry , metal organic framework , inorganic chemistry , organic chemistry , receptor , crystal structure , biochemistry , adsorption
Two new coordination polymers [Cu 3 (cpida) 2 (H 2 O) 4 ] n ·4 n H 2 O ( 1 ) and [Zn(Hcpida)] n · n H 2 O ( 2 ) have been synthesized with a new bridging chelating ligand N ‐(4‐carboxyphenyl)iminodiacetic acid (H 3 cpida). X‐ray diffraction analysis reveals that complex 1 consists of 1D parallelogram‐shaped molecular‐box chains constructed from unusual linear trinuclear Cu II secondary building units (SBUs), which further extend into 2D layers by perfect parallel AA stacking. Complex 2 adopts a 2D framework comprised of tetrahedral Zn II centres isolated from each other by the bridging bidentate carboxylate groups of the Hcpida 2− ligands. Compound 2 possesses alternate open and closed channels along the a direction. The dehydation and rehydration experiments showed that compound 2 undergoes a reversible inclusion process to some extent. However, the removal of guest water molecules from 1 results in the collapse of the polymeric networks owing to the loss of the coordinated water molecules. Compound 2 also shows strong photoluminescence and may be a good candidate for a photoactive or porous material. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)