853051-76-0Relevant academic research and scientific papers
New and versatile routes to zirconium imido dichloride compounds
Dubberley, Stuart R.,Evans, Simon,Boyd, Catherine L.,Mountford, Philip
, p. 1448 - 1458 (2005)
Reactions of zirconium dialkyl- or bis(amido)-dichloride complexes "[Zr(CH2SiMe3)2Cl2(Et 2O)2]" or [Zr(NMe2)2Cl 2(THF)2] with primary alkyl and aryl amines are described. Reaction of "[Zr(CH2SiMe3)2Cl 2(Et2O)2]" with RNH2 in THF afforded dimeric [Zr2(μ-NR)2Cl4(THF) 4] (R = 2,6-C6H3iPr2 (1), 2,6-C6H3Me2 (2) or Ph (3)), [Zr 2(μ-NR)2Cl4(THF)3] (R = tBu (5), iPr (6), CH2Ph (7)), or the "ate" complex [Zr2(μ-NC6F5) 2Cl6(THF)2 {Li(THF)3}2] (4, the LiCl coming from the in situ prepared "[Zr(CH2SiMe 3)2Cl2(Et2O)2]"). With [Zr(NMe2)2Cl2(THF)2] the compounds [Zr2(μ-NR)2Cl4(L) x(L′)y] (R = 2,6-C6H3 iPr2 (8), 2,6-C6H3Me2 (9), Ph (10) or C6F5 (11); (L)X(L′) y = (NHMe2)3(THF), (NHMe2) 2(THF)2 or undefined), [Zr2(μ-N tBu)2Cl4(NHMe2)3] (12) and insoluble [Zr(NR)Cl2(NHMe2)]x (R = iPr (13) or CH2Ph (14)) were obtained. Attempts to form monomeric terminal imido compounds by reaction of 2 or 5 with an excess of pyridine led, respectively, to the corresponding dimeric adducts [Zr 2(μ-2,6-C6H3 Me2) 2Cl4(py)4] (15) and [Zr2(μ-N tBu)2Cl4(py)3] (16). The X-ray structures of 1, 2, 4, 8, 12 and 15 have been determined. The Royal Society of Chemistry 2005.
