About: http://webisa.webdatacommons.org/48411845

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	alkyl group, a C6 -C18 -aryl group or hydrogen, and p is an integer of from 2 to 50, wherein the metallocene is a compound of the formula I ##STR4## wherein M1 is a metal of group IVb, Vb or VIb of the Periodic Table,
http://www.w3.org/ns/prov#wasQuotedFrom	google.es