{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T05:48:04Z","timestamp":1782193684184,"version":"3.54.5"},"reference-count":29,"publisher":"AIP Publishing","issue":"17","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2005,5,1]]},"abstract":"<jats:p>Solid sulfur dioxide was investigated by vibrational spectroscopy over a broad pressure and temperature range, extending to 32.5GPa at 75\u2013300K in diamond anvil cells. Synchrotron infrared spectra provided the first measurements of the pressure dependence of the lattice modes in the far-IR region. Below 17.5GPa, two fundamentals exhibit splittings enhanced by pressure. The asymmetric stretching mode of SO2 exhibits a remarkable pressure-induced softening. The observations are consistent with the ambient pressure Raman measurements indicating that SO2 crystallizes in an acentric cell, but are inconsistent with a previously proposed interpretation that the structure of the high-pressure phase consists of (SO2)3 clusters. Dramatic changes in the Raman spectra are found above 17.5GPa at room temperature. These indicate major changes in structure and possible formation of SO2 clustering with an enlarged unit cell. The behavior at low temperature differs from that at room temperature. These findings provide constraints on the phase diagram of sulfur dioxide.<\/jats:p>","DOI":"10.1063\/1.1883405","type":"journal-article","created":{"date-parts":[[2005,5,3]],"date-time":"2005-05-03T22:01:47Z","timestamp":1115157707000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":34,"title":["High-pressure vibrational spectroscopy of sulfur dioxide"],"prefix":"10.1063","volume":"122","author":[{"given":"Yang","family":"Song","sequence":"first","affiliation":[{"name":"Carnegie Institution of Washington Geophysical Laboratory, , 5251 Broad Branch Road, NW, Washington, DC 20015"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenxian","family":"Liu","sequence":"additional","affiliation":[{"name":"Carnegie Institution of Washington Geophysical Laboratory, , 5251 Broad Branch Road, NW, Washington, DC 20015"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ho-kwang","family":"Mao","sequence":"additional","affiliation":[{"name":"Carnegie Institution of Washington Geophysical Laboratory, , 5251 Broad Branch Road, NW, Washington, DC 20015"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Russell J.","family":"Hemley","sequence":"additional","affiliation":[{"name":"Carnegie Institution of Washington Geophysical Laboratory, , 5251 Broad Branch Road, NW, Washington, DC 20015"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dudley R.","family":"Herschbach","sequence":"additional","affiliation":[{"name":"Harvard University Department of Chemistry and Chemical Biology, , 12 Oxford Road, Cambridge, Massachusetts 02138"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2005,5,5]]},"reference":[{"key":"2023080105274023500_c1","doi-asserted-by":"crossref","first-page":"183","DOI":"10.1021\/ar00043a001","volume":"27","year":"1994","journal-title":"Acc. 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