Remarks
aIn units reciprocal to X units
Molecular graphs of the the2[Ph Cu]2+complexes (see Fig. S1 of Supplementary information) suggest the Cu-O distance, d Cu-O, as the most simple predictor variable (Fig. 1, Table S1 of Supplementary information) which might reflect the strength of the phenolic oxygen bonding with the interacting cell. The corresponding statistical parameters of Eq. (2) are fairly good, especially for the dataset A (Table 2).