[|Bis{(eta~5-pentamethylcyciopentadienyl)cobalt}-mu-(eta~4: eta~4-arene)]: Synthesis, Structure, and Unusual Reactivity of a New Type of Triple-Decker with Bridging Arene Ligands

摘要

In organometallic triple-decker complexes with bridging car-bacyclic ir-perimeters. the bridging ligands are bonded to each transition metal with either maximum hapticity or lower. In the mixed triple-decker 1—the first with a bridging eta~6-coordinate arene ligand-- the aromatic benzene "middle deck" can be exchanged with other arenes such us toluene or mesitylene at temperatures above 100 deg C, and yet. retain the original triple-decker structure. To our knowledge, this is the only compound knownto date with an antifacial coordinated arene bridge with which this can be achieved.