کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1299873 | 1498809 | 2009 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Agostic interactions in alkyl derivatives of sterically hindered tris(pyrazolyl)borate complexes of niobium
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Agostic interactions in alkyl derivatives of sterically hindered tris(pyrazolyl)borate complexes of niobium Agostic interactions in alkyl derivatives of sterically hindered tris(pyrazolyl)borate complexes of niobium](/preview/png/1299873.png)
چکیده انگلیسی
This review describes how the joint experimental and computational study of a series of niobium(tris(pyrazolyl))(chloride)(alkyne)(alkyl) complexes has unearthed a very rich chemistry involving a variety of agostic interactions between the alkyl chain and the niobium centre. α and β CH agostic, as well as α CC agostic coordination, have been observed, in some cases in dynamic equilibrium within the same complex. The application of experimental and computational (DFT and DFT/MM) techniques reveals the subtle interplay of steric and electronic interactions that control the relative stability of these species. This analysis also sheds light on the electronic origin of agostic distortions in early transition metal centres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Coordination Chemistry Reviews - Volume 253, Issues 5–6, March 2009, Pages 635–646
Journal: Coordination Chemistry Reviews - Volume 253, Issues 5–6, March 2009, Pages 635–646
نویسندگان
Michel Etienne, John E. McGrady, Feliu Maseras,