...
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Synthesis and structures of some new types of lithium beta-diketiminates
【24h】

Synthesis and structures of some new types of lithium beta-diketiminates

机译:某些新型β-二酮锂的合成与结构

获取原文
获取原文并翻译 | 示例
           

摘要

The tetracyclic dilithio-Si,Si'-oxo-bridged bis(N, N'-methylsilyl-beta-diketiminates) 2 and 3, having an outer [GRAPHICS] macrocycle, were prepared from [Li{CH(SiMe3)SiMe(OMe)(2)}](infinity) and 2 PhCN. They differ in that the substituent at the beta-C atom of each diketiminato ligand is either SiMe3 (2) or H (3). Each of 2 and 3 has (i) a central Si-O-Si unit, (ii) an Si(Me) fragment N, N'-intramolecularly bridging each beta-diketiminate, and (iii) an Li(thf)(2) moiety N, N'-intermolecularly bridging the two b-diketiminates (thf = tetrahydrofuran). Treatment of [Li{CH(SiMe3)(SiMe2OMe)}](8) with 2Me(2)C(CN)(2) yielded the amorphous [Li{Si(Me)(2)((NCR)(2)CH)}](n) [R = C(Me)(2)CN] (4). From [Li{N(SiMe3)C(Bu-t) C(H)SiMe3}](2) (A) and 1,3-or 1,4-C6H4(CN)(2), with no apparent synergy between the two CN groups, the product was the appropriate (mu-C6H4)-bis(lithium b-diketiminate) 6 or 7. Reaction of [ Li{N(SiMe3) C(Ph)= C(H) SiMe3}(tmeda)] and 1,3-C6H4(CN)(2) afforded 1,3-C6H4(X) X' [GRAPHICS] gave the bis(lithio-isoindoline) derivative [GRAPHICS] (5). The X-ray structures of 2, 3, 5 and 9 are presented, and reaction pathways for each reaction are suggested.
机译:由[Li {CH(SiMe3)SiMe(OMe)制备具有外部[GRAPHICS]大环的四环二硫代-Si,Si'-氧桥联的双(N,N'-甲基甲硅烷基-β-二酮)2和3。 )(2)}](无穷大)和2 PhCN。它们的不同之处在于每个二酮亚胺基配体的β-C原子上的取代基是SiMe3(2)或H(3)。 2和3各自具有(i)中心Si-O-Si单元,(ii)Si(Me)片段N,N'-在分子内桥接每个β-二酮戊酸酯,(iii)Li(thf)(2 )N,N'部分-分子间桥接两个b-二酮(thf =四氢呋喃)。用2Me(2)C(CN)(2)处理[Li {CH(SiMe3)(SiMe2OMe)}](8)得到非晶态的[Li {Si(Me)(2)((NCR)(2)CH )}](n)[R = C(Me)(2)CN](4)。来自[Li {N(SiMe3)C(Bu-t)C(H)SiMe3}](2)(A)和1,3-或1,4-C6H4(CN)(2),两者之间没有明显的协同作用两个CN基团,产物为适当的(mu-C6H4)-双(b-二酮化锂)6或7。[Li {N(SiMe3)C(Ph)= C(H)SiMe3}(tmeda) ]和1,3-C6H4(CN)(2)得到1,3-C6H4(X)X'[图]得到双(硫代-异吲哚啉)衍生物[图](5)。给出了2、3、5和9的X射线结构,并提出了每个反应的反应途径。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号