{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,3]],"date-time":"2026-01-03T15:17:17Z","timestamp":1767453437868,"version":"3.41.2"},"reference-count":39,"publisher":"AIP Publishing","issue":"8","license":[{"start":{"date-parts":[[2023,8,23]],"date-time":"2023-08-23T00:00:00Z","timestamp":1692748800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2023,8,23]],"date-time":"2023-08-23T00:00:00Z","timestamp":1692748800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100015694","name":"Fondazione Cassa di Risparmio di Firenze","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100015694","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2023,8,28]]},"abstract":"<jats:p>While polymeric carbon monoxide (pCO) has been experimentally found to remain amorphous and undecomposed at room temperature up to 50\u00a0GPa, the question of whether crystalline counterparts of it can be obtained naturally raises. From different computational studies, it can be inferred that either the crystallization of amorphous pCO (a-pCO) or its decomposition into a mixture of CxOy suboxides (x &amp;gt; y) or carbon and CO2 may occur. In this study, we report experimental investigations of the high temperature (700\u20134000\u00a0K) transformation of a-pCO in the 47\u2013120\u00a0GPa pressure range, conducted by x-ray diffraction in laser heated diamond anvil cells. Our results show the formation of no crystalline phases other than CO2 phase V, thus indicating the decomposition of the pristine a-pCO into CO2 and, likely, a mixture of amorphous CxOy suboxides and amorphous carbon hardly detectable at extreme conditions. These results support the theoretical picture of the pCO decomposition. We also show that the pressure-temperature kinetic border for this decomposition is very steep, thus indicating a strongly pressure-dependent kinetic barrier.<\/jats:p>","DOI":"10.1063\/5.0157907","type":"journal-article","created":{"date-parts":[[2023,8,23]],"date-time":"2023-08-23T10:05:08Z","timestamp":1692785108000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":3,"title":["High temperature decomposition of polymeric carbon monoxide at pressures up to 120 GPa"],"prefix":"10.1063","volume":"159","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4856-0125","authenticated-orcid":false,"given":"Demetrio","family":"Scelta","sequence":"first","affiliation":[{"name":"European Laboratory for Nonlinear Spectroscopy, LENS 1 , Via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy"},{"name":"Consiglio Nazionale delle Ricerche\u2013Istituto di Chimica dei Composti OrganoMetallici, CNR-ICCOM 2 , Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0688-5167","authenticated-orcid":false,"given":"Matteo","family":"Ceppatelli","sequence":"additional","affiliation":[{"name":"European Laboratory for Nonlinear Spectroscopy, LENS 1 , Via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy"},{"name":"Consiglio Nazionale delle Ricerche\u2013Istituto di Chimica dei Composti OrganoMetallici, CNR-ICCOM 2 , Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6746-696X","authenticated-orcid":false,"given":"Roberto","family":"Bini","sequence":"additional","affiliation":[{"name":"European Laboratory for Nonlinear Spectroscopy, LENS 1 , Via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy"},{"name":"Consiglio Nazionale delle Ricerche\u2013Istituto di Chimica dei Composti OrganoMetallici, CNR-ICCOM 2 , Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy"},{"name":"Dipartimento di Chimica \u201cUgo Schiff,\u201d Universit\u00e0 di Firenze 3 , Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4014-0203","authenticated-orcid":false,"given":"Anna","family":"Pakhomova","sequence":"additional","affiliation":[{"name":"European Synchrotron Radiation Facility, ESRF 4 , 71 Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4780-9520","authenticated-orcid":false,"given":"Gaston","family":"Garbarino","sequence":"additional","affiliation":[{"name":"European Synchrotron Radiation Facility, ESRF 4 , 71 Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5336-544X","authenticated-orcid":false,"given":"Mohamed","family":"Mezouar","sequence":"additional","affiliation":[{"name":"European Synchrotron Radiation Facility, ESRF 4 , 71 Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5693-4636","authenticated-orcid":false,"given":"Mario","family":"Santoro","sequence":"additional","affiliation":[{"name":"European Laboratory for Nonlinear Spectroscopy, LENS 1 , Via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy"},{"name":"Consiglio Nazionale delle Ricerche\u2013Istituto Nazionale di Ottica, CNR-INO 5 , Via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"317","published-online":{"date-parts":[[2023,8,23]]},"reference":[{"key":"2023120718484526300_c1","doi-asserted-by":"publisher","first-page":"857","DOI":"10.1002\/chin.200638002","article-title":"Amorphous silica-like carbon dioxide","volume":"441","year":"2006","journal-title":"Nature"},{"key":"2023120718484526300_c2","doi-asserted-by":"publisher","first-page":"1262","DOI":"10.1103\/physrevlett.85.1262","article-title":"Optical evidence for a nonmolecular phase of nitrogen above 150 GPa","volume":"85","year":"2000","journal-title":"Phys. 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