rhenium heptasulfide Heating;

1: 99 percent / NaN3, tricaprylmethylammonium chloride / H2O / 40 h / 20 °C 2: 93 percent / hydroquinone or hydroquinone methyl ether / 1 mol-percent Re2S7 / 34 h / 90 °C / Re2S7, hydroquinone or hydroquinone methyl ether, 80 deg C, 41 h View Scheme

1: AcOH/H2O / 36 h / 80 °C 2: 75 percent / aq. NaOH / 24 h / Ambient temperature View Scheme