Patent ID: 6906189

Claim:
A metal complex comprising Mn(II), Mn(III), Mn(IV), or Mn(V); and a cross-bridged ligand having the formula: wherein in this formula: each “n” is independently 1 or 2; each “R” and “R 1 ” moiety is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, aryl, alkylaryl, alkylheteroaryl and heteroaryl, or at least one R moiety is covalently bonded to another R moiety and/or R 1 moiety to form an aromatic, heteroaromatic, cycloalkyl or heterocycloalkyl ring; said moieties, except for H, being linear or branched and substituted or unsubstituted each “a” is an integer independently selected from 1, 2 and 3.