Integrated Band Intensities of Ethylene (¹²𝐂₂𝐇₄) by Fourier Transform Infrared Spectroscopy

Table 1

The integrated band intensities 𝑆(𝜈) of ¹²C₂H₄ at 296 K in the 640–3260 cm⁻¹ region.

Band assignment	Band centre 𝜈0 (cm^−1)	Band region; (cm^−1)	𝑆(𝜈) (cm^−1/cm atm)
			Previous works	Present work
𝜈9 and 𝜈2 + 𝜈12	3105 and 3079	3034–3260	𝑆(𝜈9)=100±3^a	112.20±0.24
			𝑆(𝜈9)=82.52±0.86^b
𝜈11	2989	2920–3034	56.0±0.3^a	55.35±0.14
			65.87±0.64^b
𝜈6+𝜈10	2048	1990–2100	—	2.568±0.025
𝜈7+𝜈8	1889	1820–1950	—	21.701±0.028
𝜈12	1443	1340–1540	41.16±0.50^c	41.22±0.30
𝜈7 and 𝜈10	949 and 826	640–1200	𝑆(𝜈7)=321.69±0.36^d	329±16
			𝑆(𝜈10)=1.16±0.47^d

aSee [35]. Value adjusted for 296 K. 𝜈₉ band center 𝜈₀=3105.5 cm⁻¹ and 𝜈₁₁ band center 𝜈₀=2989.5 cm⁻¹.
bSee [29]. 𝜈₉ band center 𝜈₀=3104.885 cm⁻¹ and 𝜈₁₁ band center 𝜈₀=3012.436 cm⁻¹. Included in HITRAN database [28].
cSee [21]. Value adjusted for 296 K. Included in GEISA and HITRAN databases [26, 27].
dSee [22]. Value converted to cm⁻¹/cm atm. Included in HITRAN database [28].