کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1328198 977549 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Edge-bridged half-open zirconocenes: Synthesis, characterization, and reaction with diphenylacetylene
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Edge-bridged half-open zirconocenes: Synthesis, characterization, and reaction with diphenylacetylene
چکیده انگلیسی

The synthesis and characterization of the new, 16 electron half-open zirconocenes, Zr(C5H5)(c-C8H11)(PR3) (R = Me, Et) are reported, together with a structural study of the PEt3 complex. As with other low valent half-open zirconocenes, the Zr–C distances are significantly shorter on average for the electronically open dienyl ligand than those for the C5H5 ligand, 2.343 vs. 2.512 Å. Reaction of either of these compounds with PhC2Ph led to the incorporation of two equivalents of the alkyne, resulting in a formally 14 electron complex with coordination from cyclopentadienyl, allyl, σ-alkyl, and σ-vinyl units.

The synthesis and characterization of the half-open zirconocene, Zr(C5H5)(c-C8H11)(PEt3) (c-C8H11 = cyclooctadienyl), is described. The compound shows shorter Zr–C distances for the cyclooctadienyl ligand, in accord with expectations of stronger Zr–C bonding relative to C5H5. This compound reacts with two equivalents of diphenylacetylene to yield a bicyclic coupling product.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 692, Issue 21, 1 October 2007, Pages 4460–4466
نویسندگان
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