کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1325458 1499939 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and properties of sandwiched trinuclear palladium(II) complexes with tridentate phosphine and phosphine sulfide ligands
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Preparation and properties of sandwiched trinuclear palladium(II) complexes with tridentate phosphine and phosphine sulfide ligands
چکیده انگلیسی

The central phosphino group of tripodal tetradentate tris[2-(diphenylphosphino)ethyl]phosphine (pp3) was selectively oxidized by the reaction with diethyl disulfide to give tridentate phosphine ligand pOp3. The terminal phosphino groups were reacted with sulfur to give pOp3 trisulfide (pOp3S3). Three palladium(II) ions were sandwiched in the two pOp3 and pOp3S3 ligands to form the trinuclear complexes with three trans(P) and trans(S) PdX2 (X = Cl, Br, I) moieties, respectively. The tripodal triphosphine, 1,1,1-tris(diphenylphosphinomethyl)ethane (i-p3), and its mono- and tri-sulfide, which have shorter carbon chains compared with pOp3, form the mononuclear dichloro palladium(II) complexes with cis(P) and cis(S) geometries. Difference in the catalytic activity for the C–C coupling reaction was discussed in connection with the coordinated groups and geometries of the complexes.

The central phosphino group of tripodal tetradentate tris[2-(diphenylphosphino)ethyl]phosphine (pp3) was selectively oxidized to give tridentate phosphine ligand pOp3 and its trisulfide (pOp3S3). Three palladium(II) ions were sandwiched in the two pOp3 and pOp3S3 ligands to form the trinuclear complexes with three trans(P) and trans(S) Pd(II) moieties, respectively. The structure and catalytic activity were compared with the Pd(II) complexes with the tripodal triphosphine, 1,1,1-tris(diphenylphosphinomethyl)ethane (i-p3), and its mono- and tri-sulfide.Figure optionsDownload as PowerPoint slideHighlights
► The central phosphino group of tripodal tetradentate tris[2-(diphenylphosphino)ethyl]phosphine (pp3) was selectively oxidized to give tridentate phosphine ligand pOp3 and its trisulfide (pOp3S3).
► Three palladium(II) ions were sandwiched in the two pOp3 and pOp3S3 ligands to form the trinuclear complexes with three trans(P) and trans(S) Pd(II) moieties, respectively.
► The structure and catalytic activity were compared with the Pd(II) complexes with the tripodal triphosphine, 1,1,1-tris(diphenylphosphinomethyl)ethane (i-p3), and its mono- and trisulfide.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 696, Issues 11–12, 1–15 June 2011, Pages 2471–2476
نویسندگان
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