Figure 2
∊ // a* (solid line) and ∊ // c (dotted line) polarized XANES spectra of MbCO at T = 100 K. Pre-edge peaks probe transitions to the LUMO orbitals of the Fe-heme system. Peaks C and C2 are due to focused axial scattering including the imidazole histidine and the CO ligand. Peaks A and D probe heme plane distortions. |