NCN Trianionic Pincer Ligand Precursors: Synthesis of Bimetallic, Chelating Diamide, and Pincer Group IV Complexes
作者:Soumya Sarkar、Kevin P. McGowan、Jeffrey A. Culver、Adam R. Carlson、Jürgen Koller、Andrew J. Peloquin、Melanie K. Veige、Khalil A. Abboud、Adam S. Veige
DOI:10.1021/ic100232s
日期:2010.6.7
explain the apparent low symmetry of 13 in solution. Extension of the aliphatic arm of the NCN ligand provides the new NCCCN pincer ligand precursors N,N′-(2,2′-(1,3-phenylene)bis(ethane-2,1-diyl))bis(3,5-bis(trifluoromethyl)aniline) [3,5-CF3NCCCN]H3 (16) and [3,5-CF3NCCHCN](SiMe3)2 (17). A more rigid ligand architecture was accessed by synthesis of the anthracene derived pincer ligand anthracene-1
该报告详细介绍了新的NCN三阴离子钳形配体前体的合成和金属化反应,以形成基团(IV)配合物。Ñ,Ñ ' - [1,3-亚苯基双(亚甲基)]双- 2,6-二异丙基[2,6-我PrNCN 1 H 3(8)转化成Ñ,Ñ '取代的Si(IV), Sn(IV),Mg(II)和Zn(II)衍生物。[2,6- i PrNCHN](SiMe 3)2(9-Si)和[2,6- i PrNCHN](SnMe 3)2(9-Sn)形式,首先用MeLi处理8,然后用Me 3处理MCl,其中M = Si或Sn。单晶X射线实验表明8,9-硅,和9-Sn系具有在固态相似的结构特征。[ 2,6- i PrNCHN](μ-MgCl·THF)2(12)通过用MeMgCl处理8形成,其固态结构显示双-μ-MgCl桥联单元。12的1 H NMR光谱表明溶液中发生了动态过程。可变温度1 H NMR实验未能消除动力学过程。2,6- i