3D pillar-layered coordination polymers based on 4d–4f heterometallic assembly

• Published in: Solid state sciences 2009, Vol.11 (1), p.49-55
• Main Authors: He, Yong-Ke, An, Hai-Yan, Han, Zheng-Bo
• Format: Article
• Language: English
• Subjects: Condensed matter: structure, mechanical and thermal properties; Coordination polymer; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Growth from solutions; Heterometallic assembly; Luminescent properties; Materials science; Methods of crystal growth; physics of crystal growth; Other materials; Physics; Specific materials; Structure of solids and liquids; crystallography; Structure of specific crystalline solids
• ISSN: 1293-2558; 1873-3085
• DOI: 10.1016/j.solidstatesciences.2008.04.022

By control of mixed ligands with particular coordination sites, heterometallic coordination polymers, [Ln 2(H 2O) 2Ag(C 2O 4) 2(ina) 3] n (Ln = Eu ( 1), Dy ( 2), Hina = isonicotinic acid) and {[LnAg(C 2O 4)(na) 2]·2H 2O} n (Ln = La ( 3), Tb ( 4), Hna = nicotinic acid), have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR, thermogravimetric analysis (TGA), and single-crystal X-ray diffraction. These coordination polymers feature 3D pillar-layered coordination frameworks constructed from two-dimensional (2D) lanthanide–carboxylate layers and Ag(ina) or Ag(na) pillars. It is interesting that the in situ decarboxylation of pyridine-2,3-dicarboxylic acid into nicotinic acid was observed. The luminescent properties of 1 and 4 were also studied. Heterometallic coordination polymers, [Ln 2(H 2O) 2Ag(C 2O 4) 2(ina) 3] n (Ln = Eu, Dy, Hina = isonicotinic acid) and {[LnAg(C 2O 4)(na) 2]·2H 2O} n (Ln = La, Tb, Hna = nicotinic acid), have been synthesized under hydrothermal conditions. These coordination polymers feature 3D pillar-layered coordination frameworks constructed from two-dimensional lanthanide–carboxylate layers and Ag(ina) or Ag(na) pillars. [Display omitted]