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Original Articles

Structural diversity and solid-state properties of CoII and ZnII coordination complexes with 5-aminonicotinate through metal direction

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Pages 3305-3313 | Received 30 Jun 2013, Accepted 05 Aug 2013, Published online: 24 Sep 2013
 

Abstract

Zinc and cobalt 5-aminonicotinate (5-AN) complexes, Co(5-AN)2(H2O)4 (1) and {[Zn(5-AN)2](H2O)}n (2), have been hydrothermally synthesized and structurally characterized. Single-crystal X-ray diffraction results indicate that coordination geometries are different (octahedral for CoII and tetrahedral for ZnII) and 5-AN adopts distinct binding modes (terminal in 1 and bridging in 2), forming a simple mononuclear coordination motif for 1 and a 2-D (4,4) coordination layer for 2. The higher-dimensional supramolecular architectures for both complexes are constructed via hydrogen bonding. Both complexes have been characterized by IR, microanalysis, and powder X-ray diffraction techniques and, their thermal stability and fluorescence have also been investigated.

Acknowledgement

This work was financially supported by Tianjin Normal University (No. 52XQ1104).

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