Fluorous triosmium clusters. Preparation, properties, and reactivity of Os3(CO)11{P(CH2CH2(CF2)5CF3)3} and Os3(CO)10{P(CH2CH2(CF2)5CF3)3}2. Crystal structure of Os3(CO)9(PPh3)2{P(CH2CH2(CF2)5CF3)3}. Ring opening metathesis polymerization of norbornene by

Preparation and properties of six trimeric osmium complexes that are ligated by fluorous soluble tertiary phosphines. A dihydro-triosmium-fluorous phosphine cluster exhibits ROMP catalytic activity. The polymerization of norbornene, by this cluster, in a variety of solvent systems is disclosed.