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Structural and Topological Study of Two Coordination Polymers Formed by 1,2,4,5 – Benzenetetracarboxylic Acid, Isonicotinylhydrazine and Metallic Ions Co 2+ and Zn 2+
Author(s) -
de Almeida Filipe B.,
Cunha Mariana S.,
De Abreu Heitor A.,
Diniz Renata
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600784
Subject(s) - carboxylate , denticity , ligand (biochemistry) , hydrogen bond , crystallography , chemistry , coordination polymer , metal , polymer , zinc , coordination complex , metal ions in aqueous solution , cobalt , topology (electrical circuits) , stereochemistry , molecule , inorganic chemistry , crystal structure , organic chemistry , biochemistry , receptor , mathematics , combinatorics
In this work it is highlighted the structural and topological study of two coordination polymers formed by 1,2,4,5–Benzenetetracarboxylic acid (H 4 BTC), Isonicotinylhydrazine (INH) and metallic ions Co 2+ and Zn 2+ . Even formed by the same ligands, these coordination polymers are very different. The polymer formed by ligands and Co 2+ (compound 1), forms as a 3D coordination polymer and it crystalline stability is due to its coordination bonds. On the other hand, the compound formed by ligands and Zn 2+ (compound 2), forms a 1D coordination polymer and it is mainly stabilized by hydrogen bonds. Due to these facts, their structures present different and interesting topologies. Other interesting difference is related to coordination mode of H 4 BTC ligand. In compound 1, the H 4 BTC ligand is coordinated by carboxylate groups to cobalt ion by a monodentate way and by a bidentate bridge way. However, in compound 2 the H 4 BTC coordinates to zinc ion in a bidentate way by two different carboxylate groups. In both compounds the INH ligand coordinates in the same way to the metallic sites.