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12 new diarylacet ylenedicobal t hexacarbonyl complexes were synthesized by complexation reaction of a-naphthyl,a-thienyl or sub-stituted-phenyl phenylacetylene with Co2CO)8 and N-acetylation ofp-aminophenyl phenylacetylenedicobalt hexacarbonyl.The structures of all the complexes were characterized by elemental analysis,IR and H NMR spectroscopy.Making a comparison between the N-acetylation of p-aminophenyl phenylacetylenedicobalt hexacarbonyl and that of aniline under comparable conditions,we found that the clustercore PhC2Co2(CO)6 para to an amino group attached to aromatic ring does not obviously affect the nucleophilicity of aniline.
12 new diarylacet ylenedicobal t hexacarbonyl complexes were synthesized by complexation reaction of a-naphthyl, a-thienyl or sub-stituted-phenyl phenylacetylene with Co2CO) 8 and N-acetylation of p-aminophenyl phenylacetylenedicobalt hexacarbonyl. The structures of all the complexes were characterized by elemental analysis, IR and H NMR spectroscopy. Preparation of a comparison between the N-acetylation of p-aminophenyl phenylacetylenedicobalt hexacarbonyl and that of aniline under comparable conditions, we found that the cluster core PhC2Co2 (CO) 6 para to an amino group attached to an aromatic ring does not obviously affect the nucleophilicity of aniline.