二氯化锆络合物[Zr(N 2 TBS N py)Cl 2 ](1)与1摩尔当量的ArNHLi(Ar = Mes,DIPP)反应生成锆酰亚胺基络合物[Zr(N 2 TBS N py)(═) N DIPP)(py)](2 ; N 2 TBS N py = [(2-C 5 H 4 N)C(CH 3){CH 2 NSi(CH 3)2 t Bu} 2 ] 2–,DIPP = 2,6-二异丙基苯基)和[Zr(N 2 TBS N吡啶)(= N的Mes)(吡啶)](3 ;的Mes =异亚丙基丙酮)。亚胺复合物转化为四氮杂二烯基复合物[Zr(N 2 TBS N py)(N DIPP N 2 N Ph)](4)和Zr(N 2 TBS N py)(N Mes N 2 N Ph)](5)通过添加叠氮化苯,而2或3与异丁基叠氮化物的反应生成了另一种产物7,其中叠氮化物与CH活化的辅助三脚架配体偶联。三甲基甲硅烷叠氮
Assembly of an R<sub>3</sub>N<sub>5</sub><sup>2−</sup>Chain by Cycloaddition of a Hydrazinediide and an Azide at Zirconium and its Thermal Fragmentation
作者:Thorsten Gehrmann、Julio Lloret Fillol、Hubert Wadepohl、Lutz H. Gade
DOI:10.1002/anie.200805631
日期:2009.3.9
Breaking the chain: Reaction of a zirconium hydrazinediide with organoazides gives 2‐pentazene‐1,4‐diyl complexes, such as [Zr(N2TBSNpy)N(Ad)N3NPh2}] (C gray, N blue, Si green, Zr turquoise), by formal [2+3] cycloaddition. Bonding within the N5 chain is investigated using density functional calculations. These complexes thermally eject N2 to give side‐on bonded diazenides.