کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1327978 1499948 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diphosphine ligand chelation and bridging and regiospecific ortho metalation in the reaction of 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) with Ir4(CO)12: X-ray diffraction structures of Ir4(CO)7(μ-CO)3(bpcd), Ir4(CO)5(μ-CO)3(bpcd)(μ-bpc
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Diphosphine ligand chelation and bridging and regiospecific ortho metalation in the reaction of 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) with Ir4(CO)12: X-ray diffraction structures of Ir4(CO)7(μ-CO)3(bpcd), Ir4(CO)5(μ-CO)3(bpcd)(μ-bpc
چکیده انگلیسی
The reactivity of the tetrairidium clusters Ir4(CO)12 and [Ir4(CO)11Br][Et4N] with the unsaturated diphosphine ligand 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) has been investigated. The simple substitution products Ir4(CO)7(μ-CO)3(bpcd) (3) and Ir4(CO)5(μ-CO)3(bpcd)(μ-bpcd) (4) have been isolated and the coordination mode adopted by the bpcd ligand(s) established by X-ray crystallography. Facile loss of a CO group in cluster 4 is accompanied by ortho metalation of one of the aryl rings in the bridging bpcd ligand and formation of the hydride-bridged cluster HIr4(CO)4(μ-CO)3(bpcd)[μ-PhP(C6H4)CC(PPh2)C(O)CH2C(O)] (5).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 693, Issues 8–9, 15 April 2008, Pages 1439-1448
نویسندگان
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