کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1334830 979467 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Role of hydrogen peroxide in the synthesis of nitrogen heterocycle containing cobalt complexes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Role of hydrogen peroxide in the synthesis of nitrogen heterocycle containing cobalt complexes
چکیده انگلیسی

The reactions of Co(O2CCH3)2·4H2O with the sodium salt of p-toluene sulfonic acid (NapTS) and pyridine (py) or 4-methylpyridine (4mepy) in the presence of hydrogen peroxide in methanol led to the formation of [Co(py)3(H2O)3](pTS)2 or [Co(4mepy)2(H2O)4](pTS)2·MeOH, respectively. The coordination polymer [{Co(44′bpy)(H2O)4}(pTS)2]n (4,4′-bipyridine = 44′bpy) was obtained from the reaction of Co(O2CCH3)2·4H2O with 44′bpy in the presence of NapTS. The reaction of Co(O2CCH3)2·4H2O, 2,2′-bipyridine (22′bpy) and NapTS with hydrogen peroxide resulted in the formation of the dinuclear complex [Co2(μ-OH)2(μ-O2CCH3)(O2CCH3)2(22′bpy)2](pTS). Characterization of these complexes and the role of hydrogen peroxide in these reactions are discussed. Similar reactions with sodium sulfamate gave the mononuclear [Co(22′bpy)2(O2CCH3)]NH2SO3·2H2O complex and [Co2(μ-OH)2(μ-O2CCH3)(O2CCH3)2(22′bpy)2](NH2SO3).

The role of hydrogen peroxide in the synthesis of [Co(py)3(H2O)3](pTS)2 and [Co(H2O)4(4mepy)2](pTS)2·MeOH (pyridine = py, 4-methylpyridine = 4mepy, para-toluene sulfonate = pTs) is described. A binuclear complex [Co2(μ-OH)2(μ-O2CCH3)(O2CCH3)2(22′bpy)2](pTS), is prepared under ambient conditions and characterized.Figure optionsDownload as PowerPoint slideHighlights
► The role of hydrogen peroxide in the synthesis of cobalt (II) complexes is described.
► The structures of mononuclear cobalt complexes containing p-toluenesulphonate are described.
► An hydroxo bridged dinuclear cobalt (III) complex with 2,2′-bipyridine is prepared under ambient conditions.
► A channel-like structure in a cobalt (II) coordination polymer of 4,4′-bipyridine is shown.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 30, Issue 15, 21 September 2011, Pages 2558–2563
نویسندگان
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