Manganese complexes Manganocenes

Manganese forms a large number of mononuclear complexes in oxidation states II, III, and IV with acyclic and other common ligands. The complexes primarily are six-coordinate species with octahedral or pseudo-octahedral geometries. Some exceptions to this categorization are the tetraoxo anions in oxidation states V, VI, and VII and the manganocenes. Table 1 contains electrochemical data for representative redox couples in which the Mn coordination environment remains invariant with oxidation state. Many entries are for homoleptic complexes, but some species with mixed... 

A number of complexes have been prepared from the electron-rich ligand 3,5-di(tert-butyl)-l,2,4-triphospholyl these include manganese carbonyl complexes and the manganocene, which has been structurally characterised. A paper explaining the facile silane dissociation in transition metal T -silane complexes Cp(CO)2M[p -H(SiH3 Cl )] (M = Mn, Tc and Re n = 1-3) (see, for example, 28) makes interesting reading. ... 

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