Bands positions (cm−1)

1st experiment

2nd experiment

Experiment 1 and 2

3655

(2.828 +/− 0.065)∙10−5

(2.854 +/− 0.063)∙10−5

(2.845 +/− 0.045)∙10−5

1344

(3.064 +/− 0.061)∙10−5

(3.093 +/− 0.051)∙10−5

(3.083 +/− 0.038)∙10−5

1350 + 1344 + 1335

(3.999 +/− 0.080)∙10−4

(3.945 +/− 0.064)∙10−4

(3.964 +/− 0.049)∙10−4

1176

(1.124 +/− 0.022)∙10−4

(1.100 +/− 0.017)∙10−4

(1.109 +/− 0.013)∙10−4

1184 + 1176 + 1168

(7.90 +/− 0.17)∙10−4

(7.66 +/− 0.11)∙10−4

(7.742 +/− 0.095)∙10−4

752

(4.97 +/− 0.11)∙10−5

(5.138 +/− 0.096)∙10−5

(5.079 +/− 0.072)∙10−5