Table 2. Tabulated contributions from various valence bond pictures to the ground states of complexes 1–6 .

Compound	OVB-derived character			Q Cu
	%Cu(i)	%Cu(ii)	%Cu(iii)
1	17.2	70.2	4.3	0.698
2	22.4	67.9	2.2	0.607
3	29.9	60.2	1.8	0.531
4	48.6	42.3	1.3	0.366
5	— a	89.0	— a	0.665
6	17.0	71.8	3.1	0.656

^aNo configurations greater than the printing threshold (0.3%).