Figure 4.

Evidence for distant oxygen scatterers in the [Cu(Im)₄(O)_ax1(O)_ax2] split axial structural model: a. Unfit residual vs. distance for an oxygen scatterer, with a minimum at 4 Å. b. Weighted F-value vs. the number of outlying oxygen scatterers, which refined to 3.8 Å. c. Unfit residual vs. distance for two outlying shells of oxygen scatterers. The main shell was stepped from 3 Å to 6 Å in 0.1 Å units. At each 0.1 Å main shell step, the subordinate shell was stepped from 3 Å to 6 Å, in 0.1 Å units. For each trace, total simulations = 961: ( ), main shell at 3.8 Å, subordinate shell minimum = 4.4 Å, and; ( ), main shell at 4.4 Å, shell, subordinate shell minimum = 3.8 Å. d. Weighted F-value vs. distribution number for two outlying shells of oxygen scatterers, at 3.8 Å and 4.4 Å. The first point in “d” represents 0,0. The 8,0 fit duplicates the CN=8 fit in panel “b.”