Synthesis of Ti, Zr, and Hf complexes with a new tetra-azane ligand by one-pot HCl-elimination and their properties as catalysts for production of UHMWPE
作者:Xiangdong Ji、Wei Yao、Xuyang Luo、Wei Gao、Ying Mu
DOI:10.1039/c5nj02151k
日期:——
The first example for the HCl-elimination reaction being applied in the attachment of an amido-containing ligand to Zr and Hf.
HCl-消除反应的第一个例子是将含有氨基配体附着到锆和铪上。
Germylenes and Stannylenes with Chelating Anilido–Imine Ligands: Syntheses, Structures and Reactivity
Germylenes and stannylenes with anilido–imine ligands were synthesized in high yields by the reaction of group 14 dichlorides (Cl2Ge·dioxane, Cl2Sn) and the lithium salts of the ligands. Complexes were characterized by 1H and 13C NMR spectroscopy, and the molecular structure of methoxygermylene was determined by X-ray crystallography. These data indicate the formation of N,N′-chelate complexes having
Syntheses of three new chelatinganilido-imine conjugated ligands, ortho-C6H4(NHAr‘)(CHNAr‘ ‘) [Ar‘ = Ar‘ ‘ = 2,6-Me2C6H3 (2b); Ar‘ = p-MeC6H4, Ar‘ ‘ = 2,6-iPr2C6H3 (2c); Ar‘ = Ar‘ ‘ = p-MeC6H4 (2d)], as well as their four-coordinate dialkyl aluminum complexes, ortho-C6H4(NAr‘)(CHNAr‘ ‘)AlMe2 [Ar‘ = Ar‘ ‘ = 2,6-iPr2C6H3 (3a); Ar‘ = Ar‘ ‘ = 2,6-Me2C6H3 (3b); Ar‘ = p-MeC6H4, Ar‘ ‘ = 2,6-iPr2C6H3 (3c);
三种新的螯合苯胺-亚胺共轭配体的合成,邻位-C 6 H 4(NHAr')(CH NAr'')[Ar'= Ar''= 2,6-Me 2 C 6 H 3(2b);Ar'= p -MeC 6 H 4,Ar''= 2,6- iPr 2 C 6 H 3(2c);Pr 2 C 6 H 3(2c)。Ar'= Ar''= p -MeC 6 H 4(2d)]以及它们的四配位二烷基铝络合物,邻位-C 6 H 4(NAr')(CH NAr'')AlMe 2 [Ar' = Ar''= 2,6- iPr 2 C 6 H 3(3a);Pr 2 C 6 H 3(3a)。Ar'= Ar''= 2,6-Me 2 C 6 H 3(3b); Ar'= p -MeC 6 H 4,Ar''= 2,6- iPr 2 C 6 H 3(3c);Pr 2 C 6 H 3(3c)。描述了Ar'= Ar''= p -MeC 6 H 4(3d)]。在室温下通过烷烃消除由AlMe
Transient Terminal Cu−Nitrene Intermediates from Discrete Dicopper Nitrenes
作者:Yosra M. Badiei、Ammani Krishnaswamy、Marie M. Melzer、Timothy H. Warren
DOI:10.1021/ja065299l
日期:2006.11.1
NAr)Cu[Me3NN] (5) and [Me2AI]Cu}2(mu-NAr) (6) as well as [Me3NN]Cu(benzene) over 3 h. These observations are consistent with the slow dissociation of a [Me3NN]Cu fragment from 2 to generate the transient terminal nitrenes [Me3NN]Cu=NAr and [Me2AI]Cu=NAr quickly trapped by the [Me2AI]Cu fragment to form the new unsymmetrical and symmetrical dicopper nitrenes 5 and 6. Preliminary reactivity studies indicate
铜 (I) β-二酮亚胺 [Me3NN]Cu}2(mu-甲苯) 与芳基叠氮化物 N3Ar(Ar = 3,5-Me2C6H3)在甲苯中的反应导致立即泡腾并形成二铜氮烯 [ Me3NN]Cu}2(mu-NAr) (2),产率为 77%。2 的 X 射线结构显示氮烯与被 2.911(1) A 隔开的两个 Cu 中心几乎对称键合,Cu-N 距离为 1.794(5) 和 1.808(5) A 以及 Cu-N-Cu 角107.8(2) 度。这种结构在概念上与二铜卡宾 [MexNN]Cu}2(mu-CPh2) (x = 2 or 3) (Dai, X.; Warren J. Am. Chem. Soc. 2004, 126, 10085. Badiei , YM; Warren J. Organomet. Chem. 2005, 690, 5989.) 表现出较短的 Cu-Cu 距离(2.4635(7)