Dinitrogen pentoxide properties

Preparation. It was first prepd by passing a mixt of N monoxide and N dioxide into 72% perchloric ac, the mixt evapd until the temp rose to 140° and dense white fumes were evolved, and cooled. The solid which sepd was found to be a monohydrate of nitrosyl perchlorate which was dried in a vacuum over P pentoxide to give the anhyd salt (Ref 2). More recently it was obtained by the action of an excess of liq dinitrogen tetroxide on anhyd Mg perchlorate (Ref 5) Properties... 

Nitrous oxide, nitric oxide, nitrogen trioxide, nitrogen dioxide, dinitrogen te-troxide, nitrogen pentoxide their properties, method of formation, and electronic structure. 

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