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Low-frequency raman spectrum and pressure-induced phase transition of crystalline 4,4'-d1chlorobenzophenone

✍ Scribed by D. Kirin; G.S. Pawley


Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
309 KB
Volume
85
Category
Article
ISSN
0009-2614

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Pressure dependence of the low-frequency
✍ D. Kirin; G.S. Pawley πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science 🌐 English βš– 300 KB

The low-frequency Raman spectra as a function of hydrostatic pressure for 4,4'difluorobenzophenone and 4,4'-dibromobenzophenone are presented. The change observed in some of the Raman bands suggests that the pressure induces changes in the crystal structure.

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## Abstract Raman spectra of a 3‐methyl‐4‐nitropyridine __N__‐oxide crystal were investigated as a function of pressure in a diamond‐anvil cell up to 93 kbar at room temperature. The crystal shows successive reversible phase transitions at 8, 20 and 60 kbar. Above 60 kbar, all of the external Raman