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. Author manuscript; available in PMC: 2014 Oct 23.
Published in final edited form as: J Am Chem Soc. 2013 Oct 15;135(42):10.1021/ja406635k. doi: 10.1021/ja406635k

Figure 6.

Figure 6

The correlation diagram for a coupled Fe(II) system with both ions having negative ZFS. Correlation diagram includes only the zero field energy levels for a coupled S1 = S2 = 2 system (Equation 3 where Hx,y,z = 0) with D1 = D2 = −10 cm−1 and (E/D)1 = (E/D)2 = 0. The exchange coupling (J) is varied from +1 to −1 cm−1. The middle represents the energy splitting for only ZFS contributions (thus, an uncoupled system). The left and right sides represent antiferromagnetic (J < 0) and ferromagnetic (J > 0) interactions. The relative positions of biferrous MIOX and ACP Δ9D are indicated by the blue and purple arrows.