Syntheses, topological analyses and photoelectric properties of Ag(I)/Cu(I) metal-organic frameworks based on a tetradentate imidazolate ligand
作者:Hua-Sen Weng、Jian-Di Lin、Xi-Fa Long、Zhi-Hua Li、Ping Lin、Shao-Wu Du
DOI:10.1016/j.jssc.2009.03.012
日期:2009.6
A new tetradentate imidazolate ligand 1,1',1 '',1'''-(2,2',4,4',6,6'-hexamethylbiphenyl-3,3',5,5'-tetrayl)tetrakis(methylene)(1H-imidazole) (L) and four Ag(I)/Cu(I) coordination polymers, namely [(MCN)(3)L](n) (1: M = Ag; 2: M = Cu), and [(MSCN)(2)L] (3: M = Ag; 4: M = Cu) are described. All four new coordination polymers were fully characterized by infrared spectroscopy, elemental analysis and single-crystal X-ray diffraction. Compound 1 features a 3D supramolecular framework constructed by 1D chains through inter-chain Ag-N(CN) and inter-layer Ag-N(L) weak interactions with an uninodal 6(6) topology. Complex 2 presents a 3D framework characterized by a tetranodal (3,4)-connected (3(.)4(.)5(.)10(2.)11)(3(.)4(.)5(.)6(.)7(.)9)(3(.)6(.)7)(6(.)10(2)) topology. Complexes 3 and 4 are isostructural, and both have a 3D network of trinodal 4-connected (4(.)8(5))(2)(4(2.)8(2.)10(2))(4(2.)8(4))(2) topology. The luminescent properties for these compounds in the solid state as well as the possible ferroelectric behavior of 1 are discussed. (C) 2009 Elsevier Inc. All rights reserved.