Construction of diverse CdII/ZnII coordination polymers based on 5-(quinolyl)tetrazolate generated via in situ hydrothermal synthesis
作者： Li Ma , Naiqian Yu , Susu Chen , Hong Deng
DOI: 10.1039/C2CE26323H
关键词: Stereochemistry 、 Isonicotinic acid 、 Chemistry 、 Hydrothermal synthesis 、 Crystallography 、 Hydrothermal circulation 、 Salt (chemistry) 、 Ligand 、 Luminescence 、 Cycloaddition 、 Tetrazole
摘要: By variation of reaction parameters such as metal salts and secondary ligands, a series new coordination polymers, [Cd(QTZ)2] (1), [Cd(QTZ)N3·H2O] (2), [Zn(QTZ)Cl] (3), [Cd2(QTZ)2(INA)2]·0.25H2O (4), [Cd2(QTZ)(btrc)·2(H2O)]·1.67H2O (5), 2[Cd3(QTZ)2(btec)·H2O]·H2O (6) (QTZ = 5-(quinolyl)tetrazole; HINA isonicotinic acid; H3btrc 1,3,5-benzenetricarboxylic H4btec 1,2,4,5-benzenetetracarboxylic acid) were successfully synthesized under hydrothermal reactions structurally characterized by single-crystal X-ray diffraction. The QTZ ligands in these compounds are situ generated from [2 + 3] cycloaddition 3-quinolinecarbonitrile NaN3 water with the acid CdII/ZnII salt. Compound 1 displays three-dimensional (3D) 2-fold interpenetrating diamond network Schlafli symbol 66. 2 represents two-dimensional (2D) framework constructed infinite Cd–N3− chains ligands. 3 exhibits 4-connected 2D (4,4) net built up interconnection Zn2(QTZ)2Cl2 subunits. 4 is Cd2(QTZ)2(INA)2 subunit Cd2(QTZ)2 subunit. 5 layered structure Cd2–QTZ chain extended btrc In compound 6, trinuclear CdII clusters link each other pairs to form an zigzag Cd3–QTZ chain; furthermore adjacent btec 3D network. These results indicate that powerful functional ligand nature transition ions also play significant roles dominating molecular self-assembled structure. addition, luminescent properties all have been investigated solid state at room temperature.
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