{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T23:17:49Z","timestamp":1788304669111,"version":"build-2803163510"},"reference-count":38,"publisher":"American Chemical Society (ACS)","issue":"3","license":[{"start":{"date-parts":[[2019,2,15]],"date-time":"2019-02-15T00:00:00Z","timestamp":1550188800000},"content-version":"vor","delay-in-days":22,"URL":"https:\/\/pubs.acs.org\/page\/policy\/authorchoice_ccby_termsofuse.html"}],"funder":[{"DOI":"10.13039\/501100009023","name":"Precursory Research for Embryonic Science and Technology","doi-asserted-by":"publisher","award":["JPMJPR16S6"],"award-info":[{"award-number":["JPMJPR16S6"]}],"id":[{"id":"10.13039\/501100009023","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,2,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>We present a direct observation of carbon-atom tunneling in the flipping reaction of formaldehyde between its two mirror-reflected states on a Cu(110) surface using low-temperature scanning tunneling microscopy (STM). The flipping reaction was monitored in real time, and the reaction rate was found to be temperature independent below 10 K. This indicates that this reaction is governed by quantum mechanical tunneling, albeit involving a substantial motion of the carbon atom (\u223c1 \u00c5). In addition, deuteration of the formaldehyde molecule resulted in a significant kinetic isotope effect (RCH2O\/RCD2O \u2248 10). The adsorption structure, reaction pathway, and tunneling probability were examined by density functional theory calculations, which corroborate the experimental observations.<\/jats:p>","DOI":"10.1021\/acs.jpclett.8b03806","type":"journal-article","created":{"date-parts":[[2019,1,24]],"date-time":"2019-01-24T18:09:00Z","timestamp":1548353340000},"page":"645-649","source":"Crossref","is-referenced-by-count":11,"title":["Real-Space Observation of Quantum Tunneling by a Carbon\nAtom: Flipping Reaction of Formaldehyde on Cu(110)"],"prefix":"10.1021","volume":"10","author":[{"given":"Chenfang","family":"Lin","sequence":"first","affiliation":[{"name":"Fritz-Haber Institute of the Max-Planck Society , , Faradayweg 4-6 , ,","place":["Berlin, Germany, 14195"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emile","family":"Durant","sequence":"additional","affiliation":[{"name":"University of Liverpool , , ,","place":["Liverpool, U.K., L69 3BX"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mats","family":"Persson","sequence":"additional","affiliation":[{"name":"University of Liverpool , , ,","place":["Liverpool, U.K., L69 3BX"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3552-0677","authenticated-orcid":true,"given":"Mariana","family":"Rossi","sequence":"additional","affiliation":[{"name":"Fritz-Haber Institute of the Max-Planck Society , , Faradayweg 4-6 , ,","place":["Berlin, Germany, 14195"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7029-062X","authenticated-orcid":true,"given":"Takashi","family":"Kumagai","sequence":"additional","affiliation":[{"name":"Fritz-Haber Institute of the Max-Planck Society , , Faradayweg 4-6 , ,","place":["Berlin, Germany, 14195"]},{"name":"JST-PRESTO , 4-1-8 Honcho , , ,","place":["Kawaguchi, Saitama, Japan, 332-0012"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2019,1,24]]},"reference":[{"key":"2026090118593790700_cit1","doi-asserted-by":"publisher","first-page":"466","DOI":"10.1098\/rspa.1933.0031","article-title":"The Application\nof Quantum Mechanics to Chemical Kinetics","volume":"139","author":"Bell","year":"1933","journal-title":"Proc.\nR. 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