Electric Literature of 499-40-1, Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.499-40-1, Name is (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal, molecular formula is C12H22O11. In a patent, introducing its new discovery.
Two 1D coordination polymers, [Cu(mal)(Hdpa)]n (1) and {[Cu(mal)(tpy)] ? 4H2O}n (2) (mal = maleate, Hdpa = 2, 2?-dipyridylamine and tpy = 2,2?:6?,2?-terpyridine), have been synthesized and their crystal structures, IR spectra, thermal analyses, magnetic properties were determined. In 1 and 2, the maleate ligands link adjacent metal centers to form 1D coordination polymeric chains. Furthermore, the carboxylate oxygen atoms and the aromatic chelate ligands provide potential supramolecular recognition sites for noncovalent interactions to form higher dimensionality. In 1, each pair of 1D chains recognize each other through strong hydrogen bond formed by active amine (-NH-) hydrogen and aromatic pi-pi stacking interactions to generate a zipperlike double-stranded chain. In contrast, when the substitutions of tpy for dpa further enhance the pi-pi aromatic stacking interactions, complex 2 is directly constructed into 2D zipperlike layers by the unprecedented aromatic pi-pi stacking interactions that same orientated aromatic chelate ligands are simultaneously attached to both sides of the chain and the significant C-H?O hydrogen bonds. These layers are constructed through hydrogen bonds and result in a 3D supramolecular network with 1D open channels, in which exists an unprecedented one-dimensional water chain. Both were magnetically characterized, showing weak ferromagnetic behavior.
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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics