High Quality Content by WIKIPEDIA articles! Dioxygen difluoride is a compound with the formula O2F2. It exists as an orange solid that melts into a red liquid at ?163 C. It is a strong oxidant and decomposes into OF2 and oxygen even at ?160 °C (4% per day). Dioxygen difluoride can be obtained by subjecting a 1:1 mixture of gaseous fluorine and oxygen at low pressure (7-17 mmHg is optimal) to an electric discharge of 25-30 mA at 2.1-2.4 kV. This is basically the reaction used for the first synthesis by Otto Ruff in 1933. Another synthesis involves mixing O2 and F2 in a stainless steel vessel cooled to ?196 °C, followed by exposing the elements to 3 MeV bremsstrahlung for several hours.

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