CF3SO3Ag reacts with the macrocyclic triyne ligand in THF in different ratios within several days to give the title complex (I) (yield 5‐10%) and polymerized THF.

No abstract

The interaction of octacarbonyldicobalt with 5,6,11 ,I 2,17,18-hexadehydrotribenzo[a,e,~~cyclododecine (tbc) yields the sixty-six electron cluster Co4(tbc)(CO), whose structure may model the transition state during metal catalysed [2 + 2 + 2]cyclotrimerization of alkynes.

The putative binding pocket of Im3 is the probable site of interaction with colicin E3. The six acidic residues in the pocket may interact with some of the numerous basic residues of colicin E3. The involvement of hydrophobic moieties in the binding is consistent with the observation that the tight complex can only be dissociated by denaturation. The structure of Im3 resembles those of certain nucleic acid binding proteins, in particular domain II of topoisomerase I and RNA-binding proteins that contain the ribonucleoprotein (RNP) sequence motif. This observation suggests that Im3 has a nucleic acid binding function in addition to binding colicin E3.