Cadmium Metal-Directed Three-Dimensional Coordination Polymers: In Situ Tetrazole Ligand Synthesis, Structures, and Luminescent Properties

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• 作者：Yongcai Qiu ; Yinghua Li ; Guo Peng ; Jinbiao Cai ; Limin Jin ; Li Ma ; Hong Deng ; Matthias Zeller ; Stuart R. Batten
• 刊名：Crystal Growth & Design
• 出版年：2010
• 出版时间：March 3, 2010
• 年：2010
• 卷：10
• 期：3
• 页码：1332-1340
• 全文大小：1059K
• 年卷期：v.10,no.3(March 3, 2010)
• ISSN：1528-7505

文摘

Seven three-dimensional (3D) cadmium coordination frameworks, {[Cd(5MT)₂] (1a); [Cd₅(N₃)(5MT)₉·0.12H₂O] (1b); [Cd₃(OH)Cl_1.39(N₃)_0.61(5MT)₃] (1c), 5MT = 5-methyl-tetrazole}; {[Cd₃(OH)Cl(N₃)(5AT)₃ (2a); Cd₂(OH)Br(5AT)₂ (2b), 5AT = 5-amino-tetrazole]}; {[Cd₇Cl₂(5BT)₁₂(H₂O)₂ (3a); and [Cd₇Br₂(5BT)₁₂(H₂O)₂ (3b), 5BT = 5-butyl-tetrazole], were obtained through in situ tetrazole synthesis and have been structurally characterized by elemental analyses, Fourier transform infrared spectroscopy, thermal studies, and single crystal and powder X-ray diffraction. Compounds 1a and 1b were constructed by the interconnection of 5MT and cadmium metal ions, and both exhibited distinct topological nets: 1a has a diamond-like framework, while 1b has the acs topological net. Compounds 1c and 2a represented similar structural network motifs; both were intricate coordination polymers constructed from interconnected {ClCd₃O} subnets through tetrazole anions. Compound 2b was constructed from two-dimensional (2D) wavelike {BrCd₃O} layers bridged by 5AT anions. Compounds 3a and 3b were structural isomorphs, constructed from 2D Cd-5BT wheel layers and halogen linkers. Furthermore, the luminescent properties of these complexes were investigated.