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electrochemical reduction of co2 using cu (ii) and ni (ii) complexes with 8-hydroxyquinoline ligand
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نویسنده
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binaeizadeh mohammad reza ,amiri ahmad ,fadaei farzaneh ,schenk joß kurt
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منبع
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شيمي كاربردي روز - 2020 - دوره : 14 - شماره : 53 - صفحه:135 -142
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چکیده
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Two dinuclear cu (ii) and ni (ii) complexes of the general formula [cu2l2], (1), and [ni2l6].4 (c2h5oh), (2), which l=8hydroxyquinoline have been synthesized and characterized by elemental analysis, ir and uvvis spectroscopic methods. the crystal structure analysis showed the binuclear structure for 1 and the cu (ii) centers adopt a distorted square pyramidal geometries. two cu centers in complex 1 are linked via µo coordination bridge modes of 8hydroxyquinoline ligands with the cucu distances of 3.534 å. the electrochemical behavior of the free ligand and corresponding 1 and 2 complexes was studied in dmf. the cyclic voltammetry of the complexes 1 and 2 show an irreversible metal and ligand based reductions at negative potentials. the electrocatalytic activity of the complexes 1 and 2 was monitored for co2 reduction in dmf solution. the results show that the complexes can be used as new electrocatalysts for co2 reduction, leading to formation of carbon monoxide product.
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کلیدواژه
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copper (ii) complexes ,crystal structure ,electrocatalyst ,co2 reduction
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آدرس
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university of tehran, college of science, department of chemistry, iran, university of tehran, college of science, department of chemistry, iran, école polytechnique fédérale de lausanne, institute of chemical sciences and engineering, switzerland, école polytechnique fédérale de lausanne, institute of physics, switzerland
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Electrochemical Reduction of CO2 Using Cu (II) and Ni (II) Complexes with 8Hydroxyquinoline Ligand
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Authors
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Binaeizadeh Mohammad Reza ,Amiri Ahmad ,fadaei Tirani Farzaneh ,Schenk Kurt
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Abstract
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Two dinuclear Cu (II) and Ni (II) complexes of the general formula [Cu2L2], (1), and [Ni2L6].4 (C2H5OH), (2), which L=8Hydroxyquinoline have been synthesized and characterized by elemental analysis, IR and UVVis spectroscopic methods. The crystal structure analysis showed the binuclear structure for 1 and the Cu (II) centers adopt a distorted square pyramidal geometries. Two Cu centers in complex 1 are linked via µO coordination bridge modes of 8hydroxyquinoline ligands with the CuCu distances of 3.534 Å. The electrochemical behavior of the free ligand and corresponding 1 and 2 complexes was studied in DMF. The cyclic voltammetry of the complexes 1 and 2 show an irreversible metal and ligand based reductions at negative potentials. The electrocatalytic activity of the complexes 1 and 2 was monitored for CO2 reduction in DMF solution. The results show that the complexes can be used as new electrocatalysts for CO2 reduction, leading to formation of carbon monoxide product.
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Keywords
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