Derivatives of Linear Chain Geometry

5 Derivatives of Linear Chain Geometry. The molecular structure 

The complex can be viewed as a dimer of MnnMnm dimers joined by a single oxygen bridge, with the four manganese atoms assuming a chain disposition. It is interesting to note the presence of two coordinated water molecules (01), even if their positions at opposite ends prevent any possible mutual interaction to form an 0-0 bond able to lead to the development of dioxygen. 

In this case too the chain is formed by a dimer of dimers with a double oxygen bridge. The overall oxidation state is Mn2nMnniMnlv. There are 

In MeCN solution the complex displays both a quasireversible one-electron oxidation (E01 = +0.87 V vs. SCE) and a quasireversible one-electron reduction (Eof = + 0.36 V).75 

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