کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1324436 977339 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The intriguing substitution behavior of CO with bidentate phosphine ligands induced by a gem-dialkyl effect
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
The intriguing substitution behavior of CO with bidentate phosphine ligands induced by a gem-dialkyl effect
چکیده انگلیسی

The reaction of the complexes [FeCpX(CO)2] (X = Cl, Br, I) into either [FeCp(CO)(PP)]X or [FeCpX(PP)] (PP = a bidentate diphosphine ligand) is shown to be highly dependent of the phosphine ligand used. Diphosphine ligands that form stable chelates favor formation of the neutral complex, whereas diphosphine ligands that form less stable chelates favor formation of the cationic complex. Thus, with the use of dppdmp (= 1,3-bis(diphenylphosphino)-2,2-dimethylpropane) the [FeCpX(PP)] complexes (X = Cl, Br, I) are selectively formed, induced by a gem-dialkyl effect. Apart from the bidentate phosphine ligand, the halide ion present in the iron complex has a significant influence on the course of the substitution reaction.

The substitution behavior of the compound [FeCpX(CO)2] with bidentate phosphine ligands is determined by the nature of the ligand and the halide ion present on the Fe(II) complex. A gem-dialkyl effect induces the concerted substitution of two CO ligands to form [FeCpX(PP)] complexes.Figure optionsDownload as PowerPoint slideHighlights
► Reaction of the complex [FeCpX(CO)2] is shown to be dependent on the ligand used.
► Diphosphines that form stable chelates form the neutral complex [FeCpX(PP)]
► Ligands that form less stable chelates form the cationic complex [FeCp(CO)(PP)]X
► The halide ion X also has an influence on the course of the substitution reaction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 696, Issue 9, 1 May 2011, Pages 1899–1903
نویسندگان
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