| abstract |
A compound of formula XI, nMc-NR'-C(=O)-X-(Ar) n -(L) m -RXI nWherein n- Mc is a metallocenyl group in which each ring may independently be substituted or unsubstituted, n- the metallocenyl group comprises a metal ion M selected from the group consisting of iron, chromium, cobalt, osmium, ruthenium, nickel or titanium, n- R' is H or lower alkyl, n- X is either NR' or O, n- Ar is a substituted or unsubstituted aryl group, n- n is 0 or 1, n- L is a linker group, n- m is 0 or 1, and n- R represents a moiety to be labelled or R is a moiety comprising a leaving group. |