Synthesis, Crystal Structure, and Catalytic Properties of Porous 3d-4f Heterometallic Coordination Polymers Constructed from Pyrazine-2,3-dicarboxylic Acid
authors Yang, TH; Silva, AR; Fu, LS; Shi, FN
nationality International
journal ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
author keywords Pyrazine-2,3-dicarboxylic acid; Heterometal coordination polymers; Cobalt; Lanthanides / Catalytic properties
keywords METAL-ORGANIC FRAMEWORK; SINGLE-MOLECULE MAGNET; HYDROTHERMAL SYNTHESIS; MACROCYCLIC OXAMIDE; 3-DICARBOXYLIC ACID; COMPLEXES; LIGAND; SERIES; ADSORPTION; CHAINS
abstract Reactions of pyrazine-2,3-dicarboxylic acid (H(2)pzdc), cobalt nitrate and lanthanide (Ln) oxide under hydrothermal conditions result in four new 3d-4f heterometal coordination polymers, namely, [Ln(2)Co(pzdc)(4)(H2O)(6)]2H(2)O [Ln = La (1), Pr (2), Eu (3) and Gd (4)]. All compounds were characterized by elemental analysis, infrared spectroscopy, thermal gravimetric analysis, and X-ray diffraction. The compounds exhibit a three-dimensional (3D) brick-like structure with rectangular-shaped nano-scale channels along a axis direction, made up of wave-like layers containing [Ln(pzdc)](+) units, which are connected by one-dimensional (1D) chain of [Co(pzdc)(2)](2-). The catalytic properties of compounds 1 and 3 were investigated in the synthesis of cyanohydrins at room temperature under solventless conditions. They showed similar catalytic activities with very high conversions of benzaldehyde and high selectivity towards cyanohydrin. The control experiment without addition of the coordination polymers only reached 16% conversion. Other aldehydes could also be converted totally under shorter reaction times also with very high selectivities for the corresponding cyanohydrins. Compound 1 could also be recycled in another catalytic cycle.
publisher WILEY-V C H VERLAG GMBH
issn 0044-2313
year published 2017
volume 643
issue 22
beginning page 1801
ending page 1808
digital object identifier (doi) 10.1002/zaac.201700344
web of science category Chemistry, Inorganic & Nuclear
subject category Chemistry
unique article identifier WOS:000416913400012
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journal impact factor 1.179
5 year journal impact factor 1.099
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