5905-61-3

Basic information

• Product Name: 2,2-di(p-nitrophenyl)-1-picrylhydrazyl radical
• Synonyms: 2,2-di(p-nitrophenyl)-1-picrylhydrazyl radical
• CAS NO: 5905-61-3
• Molecular Weight: 484.318
• Mol File: 5905-61-3.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 2,2-di(p-nitrophenyl)-1-picrylhydrazyl radical(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2-di(p-nitrophenyl)-1-picrylhydrazyl radical(5905-61-3)
• EPA Substance Registry System: 2,2-di(p-nitrophenyl)-1-picrylhydrazyl radical(5905-61-3)

Safety Data

• Hazardous Substances Data: 5905-61-3(Hazardous Substances Data)

Upstream product

• 147506-92-1 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl 
• 5905-68-0 2,2-di(p-nitrophenyl)-1-(2,4,6-trinitrophenyl)hydrazine 

Relevant articles and documents

A comparison between nitroxide and hydrazyl free radicals in selective alcohols oxidation

Literature data are abundant in oxidations catalyzed by nitroxides free radicals, while hydrazyls free radicals are very seldom encountered. In this work we made a comparison between some nitroxides and hydrazyl free radicals towards the ability to selectively oxidize activated alcohols to the corresponding carbonyl derivatives. As nitroxides we used 2,2,6,6-tetramethylpirrolidin-N-oxide (TEMPO) and phtalimide-N-oxyl (PINO) free radicals, while as hydrazyls were used 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-p-nitrophenyl-1-picrylhydrazyl (DN-DPPH). The differences in the physico-chemical properties between nitroxides and hydrazyls were evaluated by UV–vis, EPR and cyclic voltammetry. For DN-DPPH the X-ray crystal structure was resolved. It has been shown that a nitroxide radical is a far better catalyst in such aerobic oxidations comparatively with a hydrazyl one. The explanation of these results consists firstly in a different mechanism involved in the oxidation procedures and secondly in the variation of the oxidation potentials of nitroxides comparatively with hydrazyls.