3.

(a) Electronic absorption spectra collected in MeCN at 25 °C and (b) IR spectra of V 6 O 6 Cl – (blue), V 6 O 6 SCN – (purple), V 6 O 5 Cl – (light blue), V 6 O 5 SCN – (light purple).

(a) Electronic absorption spectra collected in MeCN at 25 °C and (b) IR spectra of V 6 O 6 Cl – (blue), V 6 O 6 SCN – (purple), V 6 O 5 Cl – (light blue), V 6 O 5 SCN – (light purple).