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在2,5-二甲氧基对苯二甲酸(H2DTA)的存在下,不同结构的咪唑衍生物1,2,4,5-四(1H-咪唑-1-基)苯(1,2,4,5-TIB)、1,4-双(4-甲基-1H-咪唑-1-基)苯(1,4-BMIB)和1,4-双(4-甲基-1H-咪唑-1-基)萘(1,4-BMIN)在溶剂热条件下分别与锌离子反应构筑出3个三维金属有机骨架:{[Zn(DTA)(1,2,4,5-TIB)0.5]·1.5H2O}n1)、[Zn(DTA)(1,4-BMIB)0.5(H2O)]n2)和{[Zn(DTA)(1,4-BMIN)]·H2O}n3)。单晶结构解析揭示3个配合物均属于单斜晶系。其中,四配位1,2,4,5-TIB参与构筑的配合物1具有拓扑符号为(62.84)的四连接框架。而具有纤细骨架和低配位数的1,4-BMIB与1,4-BMIN参与构建的配合物23则分别是二重穿插的pcu型和三重穿插的dia型框架。此外,对比配体和配合物的荧光发射光谱,发现配合物的荧光较配体有了明显的增强和蓝移现象。  相似文献   
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黄永清  万毅  程海蒂  赵越 《结构化学》2014,33(6):928-934
Two new Ag(I) complexes {Ag2(L)(NO3)(H2O)}n(1) and {Ag(L)}n·nH2O(2) have been synthesized via the reaction of silver nitrate and betaine derivative 1-carboxymethylpyridinium-3-carboxylate(L) by only changing the metal-to-ligand ratio. The results of X-ray crystallographic analysis indicate that complexes 1 and 2 both crystallize in the monoclinic space group P21/c with a = 5.0809(14), b = 17.390(5), c = 13.399(4), β = 91.677(5)o, V = 1183.4(6)3, Z = 4, Mr = 475.90, Dc = 2.671 g/cm3, F(000) = 912, μ = 3.352 mm-1, S = 1.259, the final R = 0.0320 and wR = 0.0831 for 2036 observed reflections with I 2σ(I) for 1 and a = 12.180(2), b = 5.0283(10), c = 14.396(3), β = 94.87(3)o, V = 878.5(3)3, Z = 4, Mr = 306.02, Dc = 2.314 g/cm3, F(000) = 600, μ = 2.294 mm-1, S = 1.053, the final R = 0.0283 and wR = 0.0684 for 2011 observed reflections with I 2σ(I) for 2. Complexes 1 and 2 both feature a unique 2D structure. For 1, the 2D undulated network consists of 1D infinite helical chains running parallel to the b axis, while for 2, the 2D network is made up of 1D tubes along the b axis. Moreover, the Ag…Ag interactions in complexes 1 and 2 are also discussed.  相似文献   
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