Regioselective Si-C bond activation in silicon-bridged ansa-cycloheptatrienyl-cyclopentadienyl complexes.
On treatment with [Pt(PEt3)3], silicon-bridged ansa-cycloheptatrienyl-cyclopentadienyl Ti and V complexes, [1]silatroticenophane and [1]silatrovacenophane, undergo oxidative addition and regioselective insertion of a Pt(PEt3)2 moiety into the silicon-carbon bond to the seven-membered ring; the resulting complexes, [2]platinasilatroticenophane and [2]platinasilatrovacenophane, can be partly used as single-source catalysts for the ring-opening polymerization (ROP) of the original highly strained sandwich molecules.
Tamm
Matthias
M
Lehrstuhl für Anorganische Chemie, Department Chemie, Technische Universität Munchen, Lichtenbergstr. 4, D-85747 Garching, Germany. matthias.tamm@ch.tum.de
Kunst
Andreas
A
Herdtweck
Eberhardt
E