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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Cerium-carbon dative interactions supported by carbodiphosphorane
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Cerium-carbon dative interactions supported by carbodiphosphorane

机译:Carbodiphophorane支持的铈 - 碳的DITIT相互作用

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摘要

A set of complexes containing dative interactions between a rare-earth metal and carbon are reported. Complex 2, Br3Ce(CDP)(THF), with a Ce <- C bond was synthesized by the reaction of CeBr3 with a carbon(0) ligand, carbodiphosphorane (CDP). More significantly, a trivalent cerium complex 3, [BrCe(CDP)(2)](BPh4)(2), with two sigma dative interactions C -> Ce <- C was also isolated, which represents an unusual example of two dative interactions formed with the same atom in a molecule. Furthermore, pi donation by the second lone-pair electrons of the CDP ligand is rather weak. Single-crystal X-ray diffraction shows that the Ce-C bond lengths in these complexes are comparable with those in cerium(iii)-carbene species. Density functional theory calculations support the dative interaction formation in these complexes and the strength of sigma-donation in 3 is stronger than that in 2.
机译:报道了一组含有稀土金属和碳之间的DIST相互作用的复合物。 通过CEBR3与碳(0)配体,碳二磷烷(CDP)的反应合成了CE < - C键合的复合物2,BR3CE(CDP)(THF)。 更重要的是,还分离出三价铈络合物3,[BRCE(CDP)(2)](BPH4)(2),其中分离出两种Sigma Dative相互作用C-> Ce < - C,这代表了两个Diative相互作用的不寻常示例 在分子中形成相同的原子。 此外,CDP配体的第二个单对电子的PI捐赠相当弱。 单晶X射线衍射表明,这些配合物中的CE-C键长度与铈(III)甘油物种中的CE-C键长度相当。 密度函数理论计算支持这些复合物中的DIVE相互作用形成,并且3中的SIGMA捐赠的强度比2强于2。

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    Nanjing Univ State Key Lab Coordinat Chem Jiangsu Key Lab Adv Organ Mat Sch Chem &

    Chem Engn Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Tech Univ Inst Adv Synth Sch Chem &

    Mol Engn Jiangsu Natl Synerget Innovat Ctr Adv Mat Nanjing 211816 Jiangsu Peoples R China;

    Nanjing Univ State Key Lab Coordinat Chem Jiangsu Key Lab Adv Organ Mat Sch Chem &

    Chem Engn Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Tech Univ Inst Adv Synth Sch Chem &

    Mol Engn Jiangsu Natl Synerget Innovat Ctr Adv Mat Nanjing 211816 Jiangsu Peoples R China;

    Nanjing Tech Univ Inst Adv Synth Sch Chem &

    Mol Engn Jiangsu Natl Synerget Innovat Ctr Adv Mat Nanjing 211816 Jiangsu Peoples R China;

    Nanjing Univ State Key Lab Coordinat Chem Jiangsu Key Lab Adv Organ Mat Sch Chem &

    Chem Engn Nanjing 210093 Jiangsu Peoples R China;

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