Advances in Physical Chemistry / 2013 / Article / Tab 2 / Research Article
Polyethylene Glycols as Efficient Media for Decarboxylative Nitration of α ,β -Unsaturated Aromatic Carboxylic Acids by Ceric Ammonium Nitrate in Acetonitrile Medium: A Kinetic and Mechanistic Study Table 2 Activation parameters of cinnamic acid in different PEG media. Units of
= dm
3 mol
−1 min
−1 .
Type of PEG PEG
atEquation
% (V/V) 300 K kJ/mol J/K/mol 0.5 0.01
= −13.32
+ 34.090.999 110 84.2 85.9 1.0 0.02
= −9.181
+ 20.970.999 76.3 83.3 −23.2 PEG-200 2.0 0.03
= −8.399
+ 18.750.995 70.0 95.5 −41.7 3.0 0.04
= −8.625
+ 19.840.998 91.8 81.8 −32.6 4.0 0.08
= −7.047
+ 15.060.999 58.6 55.6 −72.3 5.0 0.1
= −8.112
+ 19.010.995 67.5 39.7 39.5 0.5 0.01
= −22.79
+ 64.430.997 189 87.6 338 1.0 0.03
= −4.655
+ 6.3080.996 38.7 82.3 −145 PEG-300 2.0 0.04
= −5.385
+ 8.9300.999 44.8 81.8 −123 3.0 0.05
= −2.684
+ 0.2520.998 22.4 81.0 −195 4.0 0.06
= −8.743
+ 20.630.999 72.7 80.5 −20.0 5.0 0.08
= −7.750
+ 17.600.999 64.5 80.0 −51.3 0.5 0.02
= −6.979
+ 13.650.999 58.0 83.3 −84.0 1.0 0.03
= −6.106
+ 11.050.997 50.8 82.5 −105 PEG-400 2.0 0.04
= −9.224
+ 21.840.999 76.7 81.5 −16.0 3.0 0.06
= −8.718
+ 20.540.999 72.5 38.0 −80.5 4.0 0.07
= −7.054
+ 15.380.999 58.7 80.1 −69.7 5.0 0.1
= −7.687
+ 17.630.999 64.0 79.3 −51.0 0.5 0.02
= −5.421
+ 8.5500.998 45.0 83.0 −126 1.0 0.03
= −4.644
+ 6.2740.999 38.6 82.2 −145 PEG-600 2.0 0.04
= −3.131
+ 1.5420.999 26.0 81.4 −184 3.0 0.05
= −5.555
+ 9.8130.999 46.2 81.0 −115 4.0 0.07
= −3.622
+ 3.7530.998 30.1 80.0 −166 5.0 0.1
= −4.247
+ 5.956 0.999 35.3 80.0 −148