User:Graeme Bartlett/Oxygen dimer

The Oxygen dimer (O2)2, or just O4 is a van der Waals molecule consisting of two oxygen molecules weakly bound together. It is found in Earth's atmosphere, and can be produced in concentrated form by cooling oxygen gas. (O2)2 10.1029/2001GL013734 10.1021/jp9526713 10.1039/C3CP50968K 10.1021/ja9917215

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