Vibrational spectra of volatile inorganic hydrides in the liquid state

High‐Pressure Chemistry of Red Phosphorus and Water under Near‐UV Irradiation

“…The experimental spectrum measured in a transparent area could be reproduced by a linear combination of the spectra of the three phosphorus acids. A sharp peak at 2330 cm À1 (Figure 4 B, traces c, l, and g), assigned to the PÀH stretching mode of gaseous phosphine (PH 3 ) [25] (2314 cm À1 in the liquid at 300 K, P < 3 MPa [25,26] ), characterizes the spectra Figure 1 for the labels): A) spectra measured in four different bubbles (traces c, e, h, and l); B) spectra measured in four different transparent areas (traces d, x, y, and z); C) spectra measured in three dark areas (traces u, v, and w). Also in the 2100-2800 cm À1 frequency range, characteristic Raman spectra could be measured both in the bubbles and in the transparent areas ( Figure 4).…”

“…Also in the 2100-2800 cm À1 frequency range, characteristic Raman spectra could be measured both in the bubbles and in the transparent areas ( Figure 4). A sharp peak at 2330 cm À1 (Figure 4 B, traces c, l, and g), assigned to the PÀH stretching mode of gaseous phosphine (PH 3 ) [25] (2314 cm À1 in the liquid at 300 K, P < 3 MPa [25,26] ), characterizes the spectra Figure 1 for the labels): A) spectra measured in four different bubbles (traces c, e, h, and l); B) spectra measured in four different transparent areas (traces d, x, y, and z); C) spectra measured in three dark areas (traces u, v, and w). Figure 5.…”

Raman spectroscopic measurements of ν1 band of hydrogen sulfide over a wide range of temperature and density in fused‐silica optical cells

“…Raman spectroscopy, a non‐destructive and non‐invasive technique, has been used to provide information on the formation pressures and temperatures of geologic fluids and on the solubility and diffusion coefficients of gases (e.g., CH 4 and CO 2 ) in pure water and brines . Murphy and Vance reported the first Raman spectroscopy measurements of gaseous, liquid, and solid H 2 S. Since then, Raman spectroscopy has been successfully applied to identify H 2 S in fluid inclusions and gas hydrates, and Raman spectra of H 2 S in gas, liquid, and solid phases and supercritical fluids, collected under various temperature ( T ) and pressure ( P ) conditions, have been reported, including those for the crystalline H 2 S in diamond anvil cell at very low T and high P . However, these previous studies were mostly limited to the qualitative analysis of H 2 S, with few studies attempting to quantitatively determine H 2 S using Raman spectroscopy.…”

High pressure synthesis of phosphine from the elements and the discovery of the missing (PH3)2H2 tile

“…Even if the infrared bands of solid PH 3 have been measured only at low T 50,51 and those of liquid PH 3 only at low temperature and modest high pressure (up to 35 atm) 52 , the bands observed at 983,~1100, 2358, and 3466 cm −1 can be confidently assigned to the fundamental and combination vibrational modes of PH 3 , as indicated in Table 1.…”