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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: J Photochem Photobiol B. 2011 Mar 3;104(1-2):51–59. doi: 10.1016/j.jphotobiol.2011.02.019

Figure 1.

Figure 1

Three major Fourier peaks are seen in the Mn EXAFS of Ca and Sr containing PS II samples [15]. The first peak is assigned to Mn-O,N ligands. The second FT peak is assigned to Mn-Mn distances. A third FT peak fits best to Mn-Mn and Mn-Ca/Sr distances The spectra are clearly different in the amplitude of the third peak, which isenhanced in the spectrum from the Sr-reactivated sample, as this peak consists of both Mn-Mn and Mn-Ca or Sr contributions. The insets shows the Ca oxo-bridging motifs to Mn that are compatible with the Mn-Ca and Mn-Sr distances of 3.3 and 3.4 Å respectively.