کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1324316 1499889 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Group-13 carbenoid ligands at tungsten: Coordination and C–H activation
ترجمه فارسی عنوان
لیگاندهای کربنوئید گروه 13 در تنگستن: هماهنگی و فعال سازی کلسیم
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
چکیده انگلیسی


• Structural characterization of the shortest W–Al bond in a molecular compound.
• C–H activation of ethylene.
• Formation of a novel organoaluminium cage structure acting as a ligand for tungsten.

Reactions of zero valent tungsten complexes with AlCp∗ and GaCp∗ (Cp∗ = pentamethylcyclopentadienyl) are presented. The treatment of [W(C2H4)2(PMe3)4] with 2 equiv of GaCp∗ or AlCp∗ leads to the formation of cis-[W(GaCp∗)2(PMe3)4] (1) or trans,cis,cis-[W(AlCp∗)2(C2H4)2(PMe3)2] (2) under cleavage of ethylene or PMe3 ligands, respectively. Treatment of either [W(C2H4)2(PMe3)4] or 2 with 4 or 6 equiv of AlCp∗ leads to the C–H activated species of over-all composition [W(AlCp∗)6(C2H4)2] (3), which features terminal W–H as well as bridging W–H–Al hydride ligands and C–H activated C2H4 resulting in Al–C bonds. All new compounds are characterized by solution NMR, IR, elemental analyses (EA), liquid injection field desorption ionization mass spectrometry (LIFDI-MS) as well as single crystal x-ray crystallography.

Zero valent tungsten complex [W(C2H4)2(PMe3)4] reacts with AlCp* and GaCp* (Cp* = pentamethylcyclopentadienyl) in the formation of cis-[W(GaCp*)2(PMe3)4] (1), trans,cis,cis-[W(AlCp*)2(C2H4)2(PMe3)2] (2), or a C–H activated species of over-all composition [W(AlCp*)6(C2H4)2] (3).Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 751, 1 February 2014, Pages 573–578
نویسندگان
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