CRYSTAL STRUCTURE, ELECTROCHEMICAL AND MAGNETIC PROPERTIES OF A NEW BINUCLEAR COPPER(II) COMPLEX WITH BENZOIC ACID AS A LIGAND (300,00 руб.)

In 1, the Cu(II) ion is coordinated by six atoms to give a distorted octahedral coordination geometry. <...> The results show that the electron transfer of 1 is quasi reversible in the electrode reaction corresponding to Cu(II)/Cu(I), and 1 exhibits three relatively strong fluorescent emission peaks at 403, 425, and 454 nm. <...> In addition, complex 1 displays the antiferromagnetic property in a temperature range of 300 — 10 K. DOI: 10.15372/JSC20170126 Keywords: synthesis, copper(II) complex, crystal structure, electrochemical and magnetic properties. <...> In recent years, the rational design and assembly of coordination supramolecular complexes have attracted great interest due to their fascinating structural diversity as well as their potential applications in magnetism, photoluminescence, guest inclusion, gas adsorption, catalysis, and so on [ 1—10]. <...> Benzoic acid and its derivatives that commonly possess multiple coordination modes are excellent candidates for constructing supramolecular metal complexes through selective and directional noncovalent forces such as the hydrogen bonding, ƒ   ƒ and C—H ƒ interactions [ 11—18 ]. <...> In order to obtain further information about the complex construction with the benzoic acid ligand, we selected benzoic acid as a ligand, obtained a new complex [Cu2(L)4(DMF)2], and determined its structure. <...> The crystal structure determination was carried out on a Nonius CAD4 diffractometer. <...> The cyclic voltammogram was measured on a CHI660D electrochemical workstation from Shanghai Hua Chen. <...> PXRD was obtained on an Ultima IV X-Ray diffractometer. <...> Structure of 1 showing the coordination environment of the Cu(II) atom and coordination modes of the benzoic acid ligand and solvent molecules. <...> A mixture of copper chloride (0.017 g, 0.1 mmol), benzoic acid (0.048 g, 0.4 mmol) was ground for half an hour in a mortar, then the mixture was dissolved in 10 ml of DMF, and filtrated. <...> Crystallographic studies A crystal with dimensions of 0.200.100.10 mm was chosen to be measured on a Nonius CAD4 diffractometer equipped with graphite-monochromatic Moh radiation (y = 0.071073 nm) in the —w scan mode at 293(2) K. In total, 3380 reflections were collected within the range 2.23  „  25.40 <...>