Research Article

First Observation of Defined Structural Motifs in the Sulfur-Iodine Thermochemical Cycle and Their Role in Hydrogen Production

Table 2

Bands recovered by deconvolution of the Raman spectra obtained from samples of the HI-H2O binary system (S1, S2) at 298 K and 514.5 nm in the spectral region 2800–3800 cm−1. The entries for each band in this and subsequent tables, (from left to right) comprise band position; (within brackets) relative intensity normalized to the most intense band in each spectrum; (within brackets in italics) and bandwidth. Additionally the final column shows the mole ratio.

SampleBand I/cm−1Band II/cm−1Band III/cm−1Band IV/cm−1

S12829 (0.04; 289.2)3096 (0.12; 248.8)3251 (0.16; 177.3)3438 (1.00; 216.1)5.4
S22818 (0.06; 286.4)3081 (0.22; 274.1)3225 (0.16; 175.4)3414 (1.00; 232.9)3.5