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(a) Pre-edge region of the normalized Cu K-edge XANES spectra for 0.35 M CuCl and CuCl2 molecular inks (which overlap) along with pressed Cu2O, CuCl, CuO, and CuCl2·2H2O powder references. (b–d) Molecular structure analysis of 0.35 M CuCl and CuCl2 molecular inks by liquid-phase Raman spectroscopy normalized according to the 2ME peaks. (e) Reaction between thioglycolate and Cu2+ species with the formation of Cu+, H+, and dithiodiglycolate.
