Dirhenioethin (OC)5Re–CC–Re(CO)5 als Baustein zum Aufbau von Carbonyl‐Metall‐Clusterverbindungen

Dirhenioethyne (OC)5Re–CC–Re(CO)5 as Building Block for the Synthesis of Carbonyl Metal Clusters The dimetallated ethyne (OC)5Re–CC–Re(CO)5 (1) reacts with (Ph3P)2Pt(η2‐C2H4), Fe2(CO)9, and Co2(CO)8 to give the acetylide‐bridged complexes PtRe2(μ3‐η1:η1:η2‐CC)(CO)9‐(PPh3)2 (2), FeRe2(μ3‐μ1:η1:η2‐CC)(CO)13 (3), and Co2Re2‐(μ4‐η1:η1:η2:η2‐CC)(CO)14 (4), resp., whose structures have been determined by X‐ray diffraction. These reactions of (CO)5Re–CC–Re(CO)5 proceed similarly to those of the isolobal organic acetylenes, but with formation of metal‐metal bonds.