Self-Assembly of Antiferromagnetically-Coupled Copper(II) Supramolecular Architectures with Diverse Structural Complexities
| Autor: | Laurence K. Thompson, Esther C. Wang, Santokh S. Tandon, Scott D. Bunge, Neil Patel |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
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Molecular Macromolecular Substances self-assembly of supramolecular architectures Supramolecular chemistry Molecular Conformation Pharmaceutical Science chemistry.chemical_element Chemistry Techniques Synthetic Article Analytical Chemistry Ion lcsh:QD241-441 chemistry.chemical_compound X-Ray Diffraction lcsh:Organic chemistry Coordination Complexes Drug Discovery Physical and Theoretical Chemistry Schiff base Molecular Structure Organic Chemistry phenolate and azido bridged copper(II) complexes Hydrogen Bonding Copper antiferromagnetically-coupled copper(II) complexes Crystallography Oxygen atom chemistry Chemistry (miscellaneous) Molecular Medicine magneto-structural correlations Self-assembly |
| Zdroj: | Molecules, Vol 25, Iss 5549, p 5549 (2020) Molecules Volume 25 Issue 23 |
| ISSN: | 1420-3049 |
| Popis: | The self-assembly of 2,6-diformyl-4-methylphenol (DFMP) and 1-amino-2-propanol (AP)/2-amino-1,3-propanediol (APD) in the presence of copper(II) ions results in the formation of six new supramolecular architectures containing two versatile double Schiff base ligands (H3L and H5L1) with one-, two-, or three-dimensional structures involving diverse nuclearities: tetranuclear [Cu4(HL2&minus )2(N3)4]· 4CH3OH· 56H2O (1) and [Cu4(L3&minus )2(OH)2(H2O)2] (2), dinuclear [Cu2(H3L12&minus )(N3)(H2O)(NO3)] (3), polynuclear {[Cu2(H3L12&minus )(H2O)(BF4)(N3)]· H2O}n (4), heptanuclear [Cu7(H3L12&minus )2(O)2(C6H5CO2)6]· 6CH3OH· 44H2O (5), and decanuclear [Cu10(H3L12&minus )4(O)2(OH)2(C6H5CO2)4] (C6H5CO2)2· 20H2O (6). X-ray studies have revealed that the basic building block in 1, 3, and 4 is comprised of two copper centers bridged through one &mu phenolate oxygen atom from HL2&minus or H3L12&minus and one &mu 1,1-azido (N3&minus ) ion and in 2, 5, and 6 by &mu phenoxide oxygen of L3&minus and &mu O2&minus or &mu 3-O2&minus ions. H-bonding involving coordinated/uncoordinated hydroxy groups of the ligands generates fascinating supramolecular architectures with 1D-single chains (1 and 6), 2D-sheets (3), and 3D-structures (4). In 5, benzoate ions display four different coordination modes, which, in our opinion, is unprecedented and constitutes a new discovery. In 1, 3, and 5, Cu(II) ions in [Cu2] units are antiferromagnetically coupled, with J ranging from &minus 177 to &minus 278 cm&minus 1. |
| Databáze: | OpenAIRE |
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