Magnetic susceptibility measurements were performed by dissolving the desired metal to a concentration of 1 M in double–distilled H2O. Metals used in this study are provided in supplemental information (Supplemental Table S1). The metal solution was then put in a 4 mm O.D. Wilmad—quartz EPR tube (4 mm O.D.; Wilmad-LabGlass, Vineland, NJ, 707-SQ-250 M), sealed with parafilm, and measured at room temperature using a Johnson-Matthey MSB Evans magnetic susceptibility balance. Measurements were done in comparison to a water blank.
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