کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1338537 979670 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, characterization, crystal structure and oxygen-evolution activity of a manganese(II) complex with 2,4,6-tris (2-pyridyl)-1,3,5-triazine
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis, characterization, crystal structure and oxygen-evolution activity of a manganese(II) complex with 2,4,6-tris (2-pyridyl)-1,3,5-triazine
چکیده انگلیسی

The title complex [Mn(tptz)(CH3COO)(OH2)2]NO3 was synthesized through the reaction of tptz (2,4,6-tris(2-pyridyl)-1,3,5-triazine), nitric acid and manganese(II) acetate. The molecular structure was characterized by X-ray diffraction, elemental analysis, electrochemistry, EPR, IR, fluorescence and UV–Vis spectroscopy and its oxygen evolving activity has been studied. X-ray structure analysis shows that each Mn(II) ion is seven coordinated by a bidentate acetate, three nitrogen atoms of tptz and two oxygen atoms from two water ligands, which are coordinated in axial positions. The complex acts as an oxygen evolving complex with oxone (2KHSO5·KHSO4·K2SO4) as primary oxidant in aqueous solution with a turnover number of 1 (mol of O2/mol of the complex). Kinetic studies revealed a first-order dependence on the complex and oxidant. The EPR spectrum shows that the mononuclear complex oxidize to a MnIII,IV2 di-μ-oxo by oxone.

Crystal structure of [Mn(tptz)(CH3COO)(OH2)2]NO3 has been obtained. Elemental analysis, electrochemistry, IR, EPR, UV–Vis and fluorescence emission spectra for the complex have also been determined. Reactions between oxone and the manganese complex led to oxygen-evolution.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 29, Issue 17, 18 November 2010, Pages 3246–3250
نویسندگان
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