• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Nudeophilic De-coordination and Electrophilic Regeneration of 'Hemilabile'Pincer-Type Complexes:Formation of Anionic Dialkyl,Diaryl,and Dihydride Pt11 Complexes Bearing No Stabilizing Jt-Acceptors
【24h】

Nudeophilic De-coordination and Electrophilic Regeneration of 'Hemilabile'Pincer-Type Complexes:Formation of Anionic Dialkyl,Diaryl,and Dihydride Pt11 Complexes Bearing No Stabilizing Jt-Acceptors

机译：“半不稳定性”柱塞型配合物的亲核性去配位和亲电再生：不含稳定Jt受体的阴离子二烷基，二芳基和二酐Pt11配合物的形成

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Novel anionic dialkyl,diaryl, and dihydride platinum(II)complexes based on the new "long-arm"hemila bile PCN-type ligand C_6H_4[CH_2P(tBu)_2](CH_2)_2N(CH_3)_2 withthe general formula Li~+[Pt(PCN)(R)_2]~-(R=Me(4),Ph(6)and H(9))were prepared by reaction of [Pt(PCN)(R)] complexes(obtained from the corresponding chlorides)with an equivalent of RLi,as a result of the opening of the chelate ring.Alkylating agents based on other metals produce less stable products.These anionic d~8 complexes are thermally stable al though they bear no stabilizing pi ac-ceptors.They were characterized by ~1H,~(31)P{~1H},~(13)C,and ~7Li NMR spectros-copy;complex 9 was also characterized by single crystal X-ray crystallography,showing that the Li~+ ion is coordinated to the nitrogen atom of the open amine arm and to the hydride ligand(trans to the P atom)of a neighboring molecule(H-Li=2.15 A),resulting in a dimeric structure.Complexes 4 and 9 exhibit high nudeophilic reactivity,upon which the pincer complex is regenerated.Reaction of 4 with water,methyl iodide,and iodobenzene resulted in the neutral complex [Pt(PCN)(CH_3)](3)and methane,ethane,or toluene,respectively.Labeling studies indicate that the reaction proceeds by direct electrophilic attack on the metal center,rather than attack on the alkyl ligand.The anionic dihydride complex 9 reacted with water and methyl iodide to yield [Pt(PCN)(H)](8)and H_2 or methane,respectively.
机译：基于新型“长臂” hemila胆汁PCN型配体C_6H_4 [CH_2P（tBu）_2]（CH_2）_2N（CH_3）_2的新型阴离子二烷基，二芳基和二氢化物铂（II）配合物[Pt（PCN）（R）_2]〜-（R = Me（4），Ph（6）和H（9））是通过[Pt（PCN）（R）]配合物的反应制备的（由相应的由于其他金属的烷基化剂生成的产品稳定性较差，这些阴离子d〜8络合物具有热稳定性，尽管它们没有稳定的pi受体。它们的特征是〜1H，〜（31）P {〜1H}，〜（13）C和〜7Li NMR光谱;配合物9的特征还在于单晶X射线晶体学，表明Li〜+离子与开放胺臂的氮原子和相邻分子（H-Li = 2.15 A）的氢化物配体（反式为P原子）配位，形成二聚结构。配合物4和9表现出高亲核性反应性，钳形复合物为r 4与水，碘甲烷和碘苯的反应分别生成中性络合物[Pt（PCN）（CH_3）]（3）和甲烷，乙烷或甲苯。标记研究表明，该反应是通过直接亲电进行的阴离子二酐配合物9与水和甲基碘反应分别生成[Pt（PCN）（H）]（8）和H_2或甲烷。

著录项

相似文献

  • 外文文献
  • 中文文献
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