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).