Rational assembly and luminescence properties of 2 and 3D organometallic networks using silver(i) 4-pyridylethynide and 5-pyrimidylethynide complexes as building units

• Published in: CrystEngComm 2010-01, Vol.12 (10), p.3027-3032
• Main Authors: Zhang, Tianle, Hu, Yuejie, Kong, Jianxi, Meng, Xianggao, Dai, Xiaomei, Song, Hongbin
• Format: Article
• Language: English
• Subjects: Assembly; Construction; Ligands; Metalorganic compounds; Networks; Silver; Three dimensional; Two dimensional
• ISSN: 1466-8033; 1466-8033
• DOI: 10.1039/c002038a

4-Ethynylpyridine and 5-ethynylpyrimidine were utilized as ligands to synthesize three novel silver-ethynide complexes [(4-Py-C sub(2)Ag) sub(3). 6CF sub(3)CO sub(2)Ag.2H sub(2)O] (1), [(4-Py-C sub(2)Ag) sub(2). 4AgNO sub(3)] (2) and [(5-Pyrim-C sub(2)Ag).3AgNO sub(3).H sub(2)O] (3). In both 1 and 2, the [4-C sub(5)H sub(4)N(C&z.t bd; C)Ag sub(4)] super(3+) units aggregate to generate linear silver chains through silver-ethynide and argentophilic interactions, which are further connected through Ag-N(pyridyl) coordination bonds to afford 2D grids, and finally linked by trifluoroacetate or nitrategroups to form a rigid 3D coordination network. However in 3, each [5-C sub(4)H sub(3)N sub(2)(C&z.tbd; C)Ag sub(4)] super(3+) unit interacts with two other units through Ag-N(pyrimidyl) bonds to construct 2D honeycomb-like networks, and are also further connected by nitrategroups to generate a 3D network. It is demonstrated that the coordination modes of organic ligands play a key role in controlling the structures of the organometallic networks based on silver-ethynide complexes.