262 
iy fl 0/, amine | 
No. kad invented en 100 K. 
21. m-nitraniline. 
1 11), 57.0 1.06 
2 gi | 82.5 1.12 
3 6 | 87.5 1.19 
4 8 | 90.6 1.12 
5 10 91.8 1.04 
6 15 94.0 1.21 
7 20 96.2 (1.41) 
8 30 97.7 (1.83) 
deM eds LB En ES 
rohe 160 ike 25.4. hj eee 
1 95 | 100.0 = 
12 120 100.0 = 
Average: 1.13 
The following table contains a survey of the average values of 
the constants, while the graphs 1—-6 reproduce some of the series 
of observations. 
Velocity-constants of the diazo reaction: 100 K, 
C,H,NH, = 0.0965 o #p. (CH), C,H, NO = 0.0868 
o-CH;CsHyNH, = 0.0928 | o-CICsH,NH, = 0.483 | o-BrC,H,NH, = 0.450 
p- ni =0.0687 | p- i, =O153 pos » = 0.129 
m- i =0.137 | m- , =0.135 | m- , = 0.142 
o-I1,CgH4NHg = 0.453 | o-SO;HCgHyNH, = 0.966 Oo COOHC,HyNH2 = 176 
p- Ë =0.151 | p- 5 = 0.247 | p- 5 = 0.521 
Izer eh =0.1505 | m- 2 =0.107  m- 8 = 0.145 
From the results of our first series of experiments we have been 
able to draw the following conclusions: 
1. In coneordance with the researches cited above, the diazo 
reaction proved to be bimolecular under the given circumstances. 
2. When a group has been introduced into aniline, it will espe- 
cially influence the diazotisation velocity, if it is situated in the 
ortho-place; in the paraderivative the influence is less strong, in 
the meta-derivative it is commonly feeble (fig. 1, 2 and 3). 
