6.

1H NMR spectrum of V 6 O 5 Cl – (light blue, top) and V 6 O 6 Cl – (blue, bottom), omitting region for TBA 1–4 ppm, in MeCN-d 3 at 21 °C.

1H NMR spectrum of V 6 O 5 Cl – (light blue, top) and V 6 O 6 Cl – (blue, bottom), omitting region for TBA 1–4 ppm, in MeCN-d 3 at 21 °C.