Pentametallic complexes

But not only organic stannylacetylenes coupled to 62 organometallic stanna-nes also gave rise to the formation of pentametallic complexes 64-67 in fair to good yields, and the cross-shaped complex 64 already is a sizable segment out of the proposed organometallic all-carbon network. It was possible to obtain X-ray... 

Also, pincer ligands have been prepared from l,3-bis(diisopropyl or /-butyl)(phosphinomethyl)ruthenocene. Notably, the iridium and rhodium complexes of these have been discussed. The iridium hydride complex [Ir(H)(Cl)[ 2,5-(Bu PCH2)2C5H2 Ru(Cp)]] exists in the form of a mixture of endo- and o-isomers, the exo being the more thermodynamically favorable.Trimetallic ruthenocene/ferrocene ligands 23 have been prepared in three steps from l,l -diacetylruthenocene, and further derivatized to the pentametallic bis-palladium allyl complex 24. 

---