Table 1. Comparison between Selected X-ray diffraction Bond Lengths [Å] of [Cu(L1/L2)₂]SbF₆ and Their Neutral, Reduced Forms [Cu(L1/L2)₂]^a.

complex	bond	ligand a	ligand b
[Cu(L1)2]SbF6	Cu–N1	1.993(3)	1.993(3)
	Cu–N3	2.095(3)	2.095(3)
	C1–N2	1.340(5)	1.340(5)
	N2–N3	1.369(4)	1.369(4)
	N3–C2	1.341(5)	1.341(5)
[Cu(L1)2]	Cu–N1	1.924(2)	1.924(2)
	Cu–N3	2.007(2)	1.976(2)
	C1–N2	1.305(2)	1.307(2)
	N2–N3	1.426(2)	1.426(2)
	N3–C2	1.313(2)	1.313(2)
[Cu(L2)2]SbF6	Cu–N1	1.909(3)	1.922(3)
	Cu–N3	1.962(3)	1.986(3)
	C1–N2	1.310(4)	1.327(4)
	N2–N3	1.405(4)	1.371(4)
	N3–C2	1.340(4)	1.362(4)
[Cu(L2)2]	Cu–N1	1.944(2)	1.944(2)
	Cu–N3	1.985(2)	1.985(2)
	C1–N2	1.304(3)	1.304(3)
	N2–N3	1.420(2)	1.420(2)
	N3–C2	1.326(3)	1.326(3)

^aBonds are visualized in Figure 3. Ligands a and b correspond to the two different coordinated ligands within each of the complexes.