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Table 2.

Peak position, assignments, and band strengths (at 25 K).

Label Mode Position 𝒜
cm−1 cm molecules−1

H2CO (a)
ν2 + ν6 comb. 2997 3.2 × 10−18
ν5 CH2 a-str. 2891 4.7 × 10−18
ν1 CH2 s-str. 2829 1.3 × 10−17
ν2 C=O str. 1725 1.6 × 10−17
ν3 CH2 scis. 1500 5.1 × 10−18
ν6 CH2 rock. 1247 1.5 × 10−18
ν4 CH2 wag. 1178 7.2 × 10−19

CO2(a)

ν3 a-str. 2343 7.6 × 10−17

CO (a)

1 − 0 str. 2139 1.12 × 10−17

POM (b)
CH2 s-str. 2924
comb. 1235
comb. 1105 1.9 × 10−18
comb. 907-942

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