A simple synthesis of tetraethynylethenes and representative molecular structures of some dicobalt derivatives |
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| Authors: | Olivia F Koentjoro Philipp Zuber Horst Puschmann Andres E Goeta Judith A K Howard Paul J Low |
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| Institution: | Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, UK |
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| Abstract: | Palladium–copper catalysed cross-coupling reactions of tetracholoroethene with terminal acetylenes RC CH (R=SiMe3, C6H5, C6H4CN-4) in refluxing triethylamine afford the corresponding tetraethynylethenes in 30–60% isolated yields. The reaction of 1,6-bis(trimethylsilyl)-3,4-bis(trimethylsilylethynyl)-hex-3-ene-1,5-diyne with Co2(CO)6(L2)] L2=(CO)2 or μ-dppm] affords complexes in which one or two (trans) acetylene moieties are coordinated by a dicobalt fragment. |
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| Keywords: | Alkyne Tetraethynylethene Cobalt carbonyl complexes |
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