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Table 1 For specific vibrational modes, a comparison of the experimental IR results (marked in bold) and the theoretical results calculated by DFT.

From: Colossal barocaloric effect achieved by exploiting the amorphous high entropy of solidified polyethylene glycol

Vibration mode	Wavenumber (cm⁻¹)
	Exp. PEG10000		Cal. free-PEG		Exp. PEG10000/PET15000		Cal. fixed-PEG
	295 K	353 K	LT	HT	295 K	353 K	LT	HT
\({\updelta}_{{\mathrm{CH}}_{2}}\) (gauche)	1469, 1455	1461	1475, 1462	1471	1469, 1455	1468	1475, 1462	1471
\({\updelta}_{{\mathrm{CH}}_{2}}\) (trans)		1485		1489
\({\upomega}_{{\mathrm{CH}}_{2}}\) (gauche)	1361, 1344	1351	1393, 1379	1392	1360, 1344	1347	1393, 1379	1388
\({\upomega}_{{\mathrm{CH}}_{2}}\) (trans)		1324		1350
\({\uptau}_{{\mathrm{CH}}_{2}}\)_-1	1282	1298	1319	1337	1280	1274	1318	1312
\({\uptau}_{{\mathrm{CH}}_{2}}\)_-2	1241	1251	1291	1300	1247	1257	1298	1308

LT and HT denote low-temperature and high-temperature, respectively.
The bold values represent the IR results obtained by the experiments, which has been labeled in the caption of the table.

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