Functional self-assembly of hydrogen-bonded 3D coordination networks constructed from 1,2,4,5-benzenetetracarboxylic acid

Author: Bo Q.   Zhao S.   Zhang Z.   Sheng Y.   Sun Z.   Sun G.   Chen C.   Li Y.  

Publisher: MAIK Nauka/Interperiodica

ISSN: 1070-3284

Source: Russian Journal of Coordination Chemistry, Vol.33, Iss.7, 2007-07, pp. : 471-481

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Abstract

Hydrothermal synthesis, characterization (IR, TG/DTA, element analysis, inductively coupled plasma (ICP)) and single-crystal X-ray structures of H4Btec hydrate and its two cobalt complexes, colorless [H4Btec · 2H2O] n (I), pink [Co(H2O)6(H2Btec)] n (II), and nacarat {[Co(H2O)3(H2Btec)(Phen)] · H2O} n (III) (H4Btec = 1,2,4,5-benzenetetracarboxylic acid, Phen = 1,10-phenanthroline) have been solved. The results showed that I forms a 3D O-H…O hydrogen-bonded network generated from H4Btec and water molecules, II presents a 3D network constructed by mononuclear [Co(H2O)6]2+ cations and H2Btec2− dianions through extensive hydrogen-bonding interactions, and III gives rise to a pseudo-octahedral coordination geometry. Extensive hydrogen-bonding interactions have significant effects in configuring a 3D network constructed by mononuclear [Co(H2Btec)(Phen)(H2O)3] neutral molecules and a water molecules.

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