Cyclononatetraenyl‐Indenyl Transformation and a Zirconium(III) Trimer from Bulky Alkylcyclopentadienylzirconium Chlorides
作者:Sebastian Schäfer、Heiko Bauer、Julia Becker、Yu Sun、Helmut Sitzmann
DOI:10.1002/ejic.201300885
日期:2013.11.12
4)ZrCl3] (1) with potassium cyclononatetraenide did not afford the desired cyclononatetraenyl complexes [Cp″′ (C9H9)ZrCl2] or its Cp″ analogue, but the indenyl complexes [Cp″′(C9H7)ZrCl2] (8) and [Cp″(C9H7)ZrCl2] (9). By reduction of the starting compound 1 with potassium a dark red, paramagnetic zirconium(III) complex was obtained and characterized as the cyclic trimer 10 with almost equal Zr···Zr distances
已知钛、锆和铪三氯二(叔丁基)环戊二烯基配合物的结构测定 [Cp″MCl3] Cp″ = η5-C5H3tBu2, M = Zr (2), Ti (3), Hf (4) } 在通过升华获得的晶体上显示固态的单体分子。与外消旋二(叔丁基)(三甲基甲硅烷基)环戊二烯基三氯化锆 5 不同,2,3-二异丙基-1,4-二甲基环戊二烯基三氯化锆 7 不是单体,因为它的挥发性低,并且存在两组相似的信号。核磁共振谱。2 或其 Cp"' 类似物 [(η5-C5H2tBu3-1,2,4)ZrCl3] (1) 与环壬四烯化钾的反应没有得到所需的环壬四烯基配合物 [Cp"' (C9H9)ZrCl2] 或其 Cp" 类似物,但茚基复合物 [Cp″′(C9H7)ZrCl2] (8) 和 [Cp″(C9H7)ZrCl2] (9)。