.mu.-(Diphenylacetylene)bis(tricarbonylcobalt) 14515-69-6 Cobalt, hexacarbonyl(diphenylacetylene)di- Cobalt, hexacarbonyl[.mu.-(diphenylacetylene)]di-, (Co-Co) Cobalt, hexacarbonyl[.mu.-[1,1'-(.eta.2:.eta.2-1,2-ethynediyl)]bis[benzene]]]di-, (Co-Co) Cobalt, hexacarbonyl[.mu.-[1,1'-[(1,2-.eta.:1,2-.eta.)-1,2-ethynediyl]bis[benzene]]]di-, (Co-Co) NSC5264