Exchange-coupled oxygen- and sulfur-bridged cyclopentadienyl-manganese(ii) cages

Zusammenfassung

The trimetallic complex [{CpMn(mu-OSiPh3)(2)}(2)Mn] (1) and the heterocubane [CpMn(mu(3)-SSiPh3)](4) (2) are formed by deprotonation of Ph(3)SiQH (Q = O, S) by manganocene, or by transmetallation of manganocene by Ph(3)SiQLi. The Mn(II) centres in 1 and 2 are antiferromagnetically coupled, with J = -4.4 and -3.0 cm(-1) in 1 and 2, respectively (-2J formalism).