ZnII and CuII-Based Coordination Polymers and Metal Organic Frameworks by the of Use of 2-Pyridyl Oximes and 1,3,5-Benzenetricarboxylic Acid.

摘要: The simultaneous use of 2-pyridyl oximes (pyridine-2 amidoxime, H2pyaox; 2-methyl pyridyl ketoxime, Hmpko) and 1,3,5-benzenetricarboxylic acid (H3btc) provided access to five new compounds, namely [Zn(H2btc)2(H2pyaox)2]•2H2O (1•2H2O), [Zn(Hbtc)(H2pyaox)2]n (2), [Cu(Hbtc)(H2pyaox)]n (3), [Cu(Hbtc)(HmpKo)]n (4) [Cu2(Hbtc)2(Hmpko)2(H2O)2]•4H2O (5•4H2O). Among them, 3 is the first example a metal-organic framework (MOF) containing H2pyaox. Its can be described as 3-c uninodal net hcb topology with layers being parallel (1,0,1) plane. Furthermore, third reported MOF based on oxime in general. 2 4 are members small family coordination polymers an oximic ligand. 1-5 form 3D networks through strong intermolecular interactions. Dc magnetic susceptibility studies were carried out crystalline sample revealed presence weak exchange interactions between metal centres; experimental data fitted theoretical model fitting parameters J = -0.16(1) cm-1 g 2.085(1). isotropic value was also confirmed by electronic paramagnetic resonance (EPR) spectroscopy. Reactivity performed for ions; reaction progress studied discussed Fe(NO3)3 several characterization techniques, including single crystal X-ray crystallography IR