Construction of isostructural Ln–Ag (Ln = Eu; Tb; Dy) nano-channel heterometallic coordination frameworks based on pyrazine-2-carboxylate and oxalate ligands |
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| Affiliation: | 1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, PR China;2. Youngstown State University, Department of Chemistry, One University Plaza, Youngstown Ohio 44555-3663, USA |
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| Abstract: | The self-assembly of pyrazine-2-carboxylate and oxalate with mixed-metal salts under hydrothermal conditions gave three isostructural 3D 4d-4f coordination polymers, LnAg(ox)(2-pzc)2 · H2O Ln = Eu (1); Tb (2); Dy (3)] ox = oxalate, 2-pzc = pyrazine-2-carboxylate]. All three structures exhibit same unusual 3D nanoporous heterometallic coordination frameworks constructed by zigzag lanthanide–oxalate chains and Ag(2-pzc)2 units. Furthermore, the luminescent properties of complexes 1 and 2 are discussed. |
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