Synthesis and reactivity of cobalt dinitrogen complex supported by nonsymmetrical pincer ligand

扫码查看

原文链接

万方数据
维普

外文摘要：A nonsymmetrical PNN pincer ligand[6-(tBu2PNH)C5H4N-2-(3-Mes)C3H2N2]and its corresponding cobalt-N2 complex were synthesized and characterized.By the stoichiometric reaction of the PNN lig-and lithium salt with CoCl2,the complex 3,(PNN)CoCl,was obtained.Then,reduction of 3 with NaBHEt3 under a dinitrogen atmosphere yielded complex 5,(PNN)Co(Ⅰ)(η 1-N2).Single-crystal X-ray analysis,IR spectrum,and DFT calculations revealed that the dinitrogen in 5 was only weakly reduced by the cobalt center.The reactions of 5 with carbon monoxide and 2,6-dimethylphenyl isocyanide gave carbonyl and isocyanide complexes 6 and 7 with the release of N2,respectively.Furthermore,these cobalt complexes,especially complex 5,demonstrated the capacity to convert dinitrogen to N(TMS)3 with moderate effi-ciency.

外文关键词：

Dinitrogen fixationDinitrogen transformationNonsymmetrical pincer ligandCobalt complexCatalytic silylamine formation

作者：

Yuanjin Chen、Xianghui Shi、Dajiang Huang、Junnian Wei、Zhenfeng Xi

展开 >

作者单位：

Beijing National Laboratory for Molecular Sciences(BNLMS),Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,College of Chemistry,Peking University,Beijing 100871,China

State Key Laboratory of Organometallic Chemistry,Shanghai Institute of Organic Chemistry,Shanghai 200032,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaBeijing Natural Science FoundationHighperformance Computing Platform of Peking University

项目编号：

21988101222010132222008

出版年：

2024

DOI：

10.1016/j.cclet.2023.109292

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

年,卷(期)：2024.35(7)