83966-40-9

Basic information

• Product Name: Ethyl, 1-(4-nitrophenyl)- (9CI)
• Synonyms: Ethyl, 1-(4-nitrophenyl)- (9CI)
• CAS NO: 83966-40-9
• Molecular Formula: C8H8NO2
• Molecular Weight: 0
• Mol File: 83966-40-9.mol
• Article Data: 2

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Ethyl, 1-(4-nitrophenyl)- (9CI)(CAS DataBase Reference)
• NIST Chemistry Reference: Ethyl, 1-(4-nitrophenyl)- (9CI)(83966-40-9)
• EPA Substance Registry System: Ethyl, 1-(4-nitrophenyl)- (9CI)(83966-40-9)

Safety Data

• Hazardous Substances Data: 83966-40-9(Hazardous Substances Data)

Upstream product

• 82925-36-8 Toluene-4-sulfonic acid 1-(4-nitro-phenyl)-ethyl ester 
• 5339-26-4 1-(2-Bromo-ethyl)-4-nitro-benzene 
• 19935-81-0 1-(1-Bromo-ethyl)-4-nitro-benzene 
• 19935-75-2 1-(1-Chloro-ethyl)-4-nitro-benzene 
• 100-11-8 p-nitrobenzyl bromide radical anion 

Relevant articles and documents

Temperature Effects on Rates of Dehalogenation of Aromatic Anion Radicals

The temperature dependence of the unimolecular dehalogenation of radical anions of nitrobenzyl halides and haloacetophenones was measured between -7 and 70 deg C.Activation parameters range from Ea=11.2-16.9 kcal/mol and log A=12.7-17.1.Both Ea and log A increase from p- to o-nitro radicals and from chloro to bromo radicals.Unfavorable steric effects that move the halogen atom out of the aromatic plane result in lowered A factors.In general, the variation of k294 with structure depends in a complex way on the combination of Ea and log A factors, which suggests caution in the evaluation of rate constants at one temperature.The fast unimolecular dissociation of (p-NO2C6H4CH2Br)(1-). (k294=4.6*105 s-1) allows measurement of the slower bimolecular electron transfer (C6H5NO2)(1-).+p-NO2C6H4CH2Br->(p-NO2C6H4CH2Br)(1-).+C6H5NO2 (k294=1.9*106 M-1 s-1).Both the activation energy and probability factor contribute to the slow rate, possibly due to a geometry change upon the reduction of ArNO2.Extending the temperature studies to supercooled solutions shows no discontinuity of the unimolecular rate constants near the phase transition temperatures.