کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1327835 | 977507 | 2005 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Piano stool complexes containing the bulky pentaphenylcyclopentadienyl(C5Ph5) ligand: Preparation, characterization and X-ray structure of C5Ph5Zr(N(CH3)2)3 (I) Piano stool complexes containing the bulky pentaphenylcyclopentadienyl(C5Ph5) ligand: Preparation, characterization and X-ray structure of C5Ph5Zr(N(CH3)2)3 (I)](/preview/png/1327835.png)
Tris(dimethylamido) pentaphenylcyclopentadienyl zirconium (I) has been prepared and characterized by NMR spectroscopy and X-ray crystallography. The structure reflects the strong p–d amido donation with short Zr–N distances and Zr–C distances that are longer than those in the 16 electron C5Ph5(C5H5)ZrCl2. The reaction of I with (R)-(+)-sec-phenethyl alcohol to form the alkoxide complexes proceeds rapidly to the spectroscopically characterized tris((R)-(+)-sec-phenethyl alkoxide) complex, suggesting an activating effect upon alkoxide substitution.
Tris(dimethylamido) pentaphenylcyclopentadienyl zirconium (I) has been prepared and its structure reflects strong amido π donation. I reacts rapidly with (R)-(+)-sec-phenethyl alcohol to give the trisubstituted complex.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 690, Issue 19, 1 October 2005, Pages 4376–4380