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PC(sp(3))P pincer carbonyl complexes of iridium(I), and iridium(III)

机译:PC(SP(3))铱(I)的P钳羰基络合物,铱(III)

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摘要

The previously reported complex trans-[IrHCl{cis-1,3-bis-(di-tert-butylphosphino)methyl} cyclohexane] (2) forms the 18-electron carbonyl compound anti-[Ir(CO)HCl{cis-1,3-bis-((di-tert-butylphosphino)methyl)} cyclohexane] (5a)upon reaction with 1 atm CO. The structural isomer syn-[IrH(CO)Cl{cis-1,3-bis-((di-tert- butylphosphino)methyl)}cyclohexane] (5b)is obtained directly upon complexation of the ligand (1) with IrCl3 center dot H2O in refluxing DMF syn-5b is the first iridium aliphatic pincer complex with this orientation of the hydrogens and is the thermodynamically more stable isomer. Both compounds 5a and 5b afford the Ir(I)complex trans-[Ir(CO){cis-1,3-bis-((di-tert-butylphosphino)methyl)}cyclohexane] (4)upon treatment with KO'Bu. Complex 4 was also synthesised in a more straightforward fashion from the previously known terminal nitrogen complex trans-[Ir(N-2){cis-1,3-bis-((di-tert-butylphosphino)-methyl)} cyclohexane] (3)under atmospheric CO. The complexes 4, 5a and 5b were characterised spectroscopically and in the solid state. IR data point to a more electron rich metal centre as compared to the corresponding aromatic complexes.
机译:先前报道的复杂反式 - [IRHCL {CIS-1,3-双 - (二叔 - 丁基膦基)甲基}环己烷](2)形成18-电子羰基化合物抗[IR(CO)HCl {CIS-1 ,3-双 - ((二叔丁基膦基)甲基)}环己烷](5a)与1atom Co反应后。结构异构体Syn- [IrH(CO)Cl {CIS-1,3-BIS - ((二叔丁基膦酰基膦酮)甲基)}环己烷](5b)直接在配体(1)与IRCL3中心点H2O回流中的DMF SYN-5B中获得,是第一个铱脂肽复合物,其具有氢的这种取向和热力学上更稳定的异构体。化合物5A和5B都提供IR(I)复合反式 - [IR(CO){CIS-1,3-双 - ((二叔 - 丁基膦基)甲基)}环己烷](4)在用KO'BU处理后。复合物4也以先前已知的末端氮气复合反式[IR(N-2){CIS-1,3-双 - ((二叔丁基膦基) - 甲基)}环己烷( 3)在大气中的CO。复合物4,5a和5b的光谱和固态化。与相应的芳族配合物相比,IR数据点进入更富有的金属中心。

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  • 来源
    《RSC Advances》 |2015年第20期|共5页
  • 作者单位

    Lund Univ Dept Chem Ctr Anal &

    Synth S-22100 Lund Sweden;

    Lund Univ Dept Chem Ctr Anal &

    Synth S-22100 Lund Sweden;

    Lund Univ Dept Chem Ctr Anal &

    Synth S-22100 Lund Sweden;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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