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Hemerythrin mixed-valence forms

Mixed-valence forms of the dinuclear iron unit have been observed for hemerythrin and MMO. These are characterized by EPR signals, which are observable only near liquid helium temperatures, with 1.7-1.8 and arise from the S = i state of an antiferromagnetically coupled high-spin Fe(III)-high-spin Fe(II) pair (Fig. 14) (127). Similar signals are found... [Pg.131]

Nitric oxide binds to deoxyhemocyanin, to deoxyhemerythrin, and to the mixed valence Fe Fe" semimethemerythrin. " Carbon monoxide binds to neither form of hemerythrin apparently the other ligands have insufficiently strong fields to stabilize the low-spin state for which electron density would be available for back donation into the CO tt orbitals. [Pg.211]

See other pages where Hemerythrin mixed-valence forms is mentioned: [Pg.165]    [Pg.216]    [Pg.152]    [Pg.163]    [Pg.254]    [Pg.276]    [Pg.366]    [Pg.254]    [Pg.3708]    [Pg.282]    [Pg.309]   
See also in sourсe #XX -- [ Pg.131 , Pg.132 , Pg.133 , Pg.134 ]



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