Electric Literature of 499-40-1, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 499-40-1, C12H22O11. A document type is Article, introducing its new discovery.
Highly Thermally and Chemically Stable Nickel(II) Coordination Polymers: Tentative Studies on Their Sorption, Catalysis, and Magnetism
The five new Ni(II) coordination polymers (CPs) {[Ni(bitp)(bpe)0.5(H2O)2]¡¤0.5bpe}n (1), {[Ni(bitp)(bpa)0.5(H2O)2]¡¤0.5bpa}n (2), {[Ni(bitp)(4,4?-bpy)0.5(H2O)]¡¤H2O}n (3), {[Ni1.5(bitp)(Hbitp)(2,2?-bpy)(H2O)]¡¤3H2O}n (4), and [Ni(bitp)(bipyam)]n (5), where H2bitp = 2-(benzimidazol-1-yl)terephthalic acid, bpe = 1,2-bis(4-pyridyl)ethylene, bpa = 1,2-bis(4-pyridyl)ethylane, 4,4?-bpy = 4,4?-bipyridine, 2,2?-bpy = 2,2?-bipyridine, and bipyam = 2,2?-bipyridylamine, were prepared under the same hydrothermal environments except for various N-donor ligands which can effectively regulate the structures of the complexes. For the bridging N-donor ligands bpe, bpa, and 4,4?-bpy, isostructural 1 and 2 feature three-dimensional (3D) layered-pillared frameworks with one-dimensional (1D) channels that house free bpe or bpa, while 3 is a wavelike two-dimensional (2D) stacked layer with similar 4,4?-bpy bridging auxiliary ligands. However, when terminal ligands 2,2?-bpy and bipyam are used, 2D 4 and 1D ladder chains 5 are obtained, respectively. Interestingly, 1-5 exhibit outstanding thermostability (up to 320 C) and chemical stabilities (against boiling water, acids, bases, and organic solvents). Furthermore, on the basis of their highly thermal and chemical stability, tentative studies on the structures and properties (such as adsorption, catalysis, and magnetic properties) were undertaken. The gas sorption measurements show that 1 and 2 exhibit high adsorption selectivity of CO2 over CH4. The catalytic reactions demonstrate the role of catalysts 1-5 to synthesize 3,6-bis(pyridin-4-yl)-1,2,4,5-tetrazine. The magnetic analyses indicate that there exist a zero field splitting (ZFS) on the Ni(II) ions in 1-5.
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Reference£º
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics