TMEDA Adducts of CpMnCl and Manganocene

Abstract

The base‐stabilized manganese(II) half‐sandwich complex 1 , the first unsubstituted cyclopentadienylmanganese(II) halide, was synthesized via the route depicted below. 1 could find wide application as a CpMn transfer agent, e.g. for the synthesis of unsymmetrical sandwich compounds, especially “mixed” manganocenes, which should enable a detailed study of the high‐spin—low‐spin equilibrium. The thermolysis of 1 leads to Cp 2 Mn(TMEDA), the first Mn 11 compound known to contain a η 5 ‐ and a η 1 ‐ligand (TMEDA Me 2 NCH 2 CH 2 NMe 2 , Cp  C 5 H 5 ). equation image