Approach to a metallacycling polymerization - reactions of [(η5-C5H5)Co(PPh3)2] with α,β-diynes and Me3SiCCC6H4C6H4CCSiMe3

Ta i. Shimura, Akira Ohkubo, Kunitsugu Aramaki, Hidehiro Uekusa, Toyoaki Fujita, Shigeru Ohba, Hiroshi Nishihara

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Reactions of [CpCo(PPh3)2](Cp=η5-cyclopentadienyl) with conjugated diacetylenes were investigated in terms of the synthesis of π-conjugated organometallic polymers. The reaction of an α,β-diyne, PhCCCCPh, gave three geometric isomers of dialkynylcobaltacyclopentadienes, 1a-c, and an insoluble polymeric product, 1d. A 2,4-dialkynyl complex, 2, and a 2,5-dialkynyl complex, 3, were obtained solely from Me3SiCCCCSiMe3 and MeCCCCMe, respectively. 1,1′-Bis(trimethylsilylethynyl)-4,4′-biphenyl afforded two isomers of 1,3-dialkynylcyclobutadiene complexes, 4a and 4b. The stability of the one-electron oxidized forms of the cobalacyclopentadiene and cyclobutadiene complexes was examined by cyclic voltammetry.

Original languageEnglish
Pages (from-to)215-218
Number of pages4
JournalInorganica Chimica Acta
Volume230
Issue number1-2
DOIs
Publication statusPublished - 1995 Mar 1

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Diynes
Isomers
organometallic polymers
isomers
polymerization
Polymerization
Organometallics
Cyclic voltammetry
Polymers
Electrons
synthesis
products
electrons

Keywords

  • Cobaltacyclopentadiene complexes
  • Cyclic voltammetry
  • Cyclobutadiene complexes
  • Metallacycle complexes
  • Organometallic polymer complexes

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Approach to a metallacycling polymerization - reactions of [(η5-C5H5)Co(PPh3)2] with α,β-diynes and Me3SiCCC6H4C6H4CCSiMe3. / Shimura, Ta i.; Ohkubo, Akira; Aramaki, Kunitsugu; Uekusa, Hidehiro; Fujita, Toyoaki; Ohba, Shigeru; Nishihara, Hiroshi.

In: Inorganica Chimica Acta, Vol. 230, No. 1-2, 01.03.1995, p. 215-218.

Research output: Contribution to journalArticle

Shimura, Ta i. ; Ohkubo, Akira ; Aramaki, Kunitsugu ; Uekusa, Hidehiro ; Fujita, Toyoaki ; Ohba, Shigeru ; Nishihara, Hiroshi. / Approach to a metallacycling polymerization - reactions of [(η5-C5H5)Co(PPh3)2] with α,β-diynes and Me3SiCCC6H4C6H4CCSiMe3. In: Inorganica Chimica Acta. 1995 ; Vol. 230, No. 1-2. pp. 215-218.
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