2010•Chemical CommunicationsRequires access

C 60 -induced alkyne–alkyne coupling and alkyne scission reactions of a tungsten tris(diphenylacetylene) complex

Wen‐Yann Yeh

Abstract

Reaction of W(NCMe)(η(2)-PhC≡CPh)(3) with C(60) affords W(η(3)-NC(Me)C(60))(η(4),η(2)-C(6)Ph(6)) (2) and W(≡CPh)(NCMe)(η(2)-C(60)) (η(3),η(2)-C(5)Ph(5)) (3). The hexaphenylbenzene species of 2 shows an η(4)-butadiene + η(2)-olefin bonding mode and the nitrile carbon is inserted into one 6:5-ring junction of C(60). Compound 3 contains an η(3),η(2)-pentaphenylcyclopentadienyl and a benzylidyne group from 2 + 2 + 1 cyclization and scission reactions of the diphenylacetylene ligands.

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Key concepts: Diphenylacetylene, Alkyne, Nitrile, Chemistry, Bond cleavage, Tris, Tungsten, Ring (chemistry)