Rhenium tetrafluoride is a binary inorganic compound of rhenium and fluorine with the chemical formula ReF4.
Synthesis Rhenium tetrafluoride can be made by the reduction of rhenium hexafluoride with hydrogen, rhenium, or sulfur dioxide:
ReF6 + H2 → 2ReF4 + 2HF 2ReF6 + Re → 3ReF4 ReF6 + SO2 → ReF4 + SO2F2
Physical properties Rhenium tetrafluoride forms blue crystals of tetragonal structure, cell parameters a = 1.012 nm, c = 1.595 nm. Rhenium tetrafluoride reacts with water, and corrodes glass when heated.
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