Synthesis and Reactivity of Dinuclear Ni(II) Azido Complexes Containing Bithienylene or Terthienylene Bridging Ligands

Bulletin of the Korean chemical society

Yong-Joo Kim¹  Hyuck Hee Lee¹  Zhen Nu Zheng¹  Soon W. Lee¹ 

关键词: Azido;    Thienylene;    Trimethylsilyl isothiocyanate;    Trimethylsilyl cyanide;    Nickel;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Dinuclear Ni(II)–thiophene halides, which contain linear bridging thienylenes, trans,trans-[(PR3)2(X)Ni–Y– Ni(X)(PR3)2] {X = Cl, Br; H2Y = 5,5`-dichloro-2,2`-bithiophene (H2bth); H2tth = 5,5``-dichloro-2,2`:5`,2``-terthiophene (H2tth)} were prepared by the oxidative addition of dihalobithiophene (H2bth) or dihaloterthiophene (H2tth) to [Ni(COD)2] in the presence of tertiary phosphines. Subsequent reactions of NaN3 with the dinuclear Ni(II)–thiophene chlorides gave the corresponding Ni(II)–azido complexes, trans,trans-[(PR3)2(N3)Ni–Y– Ni(N3)(PR3)2], whose reactivity toward trimethylsilyl pseudohalides such as trimethylsilyl isothiocyanates and cyanides was investigated. In addition, the reaction of trans-[BrNi(PEt3)2–C4H2S–C4H2S–CHO], a thienyl Ni(II) complex containing a terminal aldehyde group, with phosphonium ylide was examined.

【 授权许可】

Unknown