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. Author manuscript; available in PMC: 2014 Mar 24.
Published in final edited form as: Photosynth Res. 2007 Apr 12;92(3):289–303. doi: 10.1007/s11120-007-9153-5

Fig. 4.

Fig. 4

(a) The Mn Kβ emission spectra of Mn oxides in formal oxidation states II, III, and IV (adapted from Messinger et al. 2001). (b) The exchange coupling for each of oxidation states II, III, and IV, showing how the splitting between the Kβ1,3 and K′ depends on the number of unpaired 3d electrons. The splitting increases as the number of unpaired electrons in the 3d states increases