{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T18:48:08Z","timestamp":1792003688529,"version":"4.4.0"},"reference-count":18,"publisher":"Wiley","issue":"19","license":[{"start":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T00:00:00Z","timestamp":1791763200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T00:00:00Z","timestamp":1791763200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP16K05641"],"award-info":[{"award-number":["JP16K05641"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP21H05418"],"award-info":[{"award-number":["JP21H05418"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["25K08689"],"award-info":[{"award-number":["25K08689"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["ChemPhysChem"],"published-print":{"date-parts":[[2026,10,14]]},"abstract":"<jats:p>\n                    A previous mass spectrometry study reported that the CO adsorption rate constant for the Ni\n                    <jats:sub>7<\/jats:sub>\n                    O\n                    <jats:sub>6<\/jats:sub>\n                    <jats:sup>+<\/jats:sup>\n                    cluster is anomalously smaller than those of adjacent sizes. In this study, the origin of this remarkable inertness was revealed using a combination of ion mobility\u2013mass spectrometry (IM\u2013MS) and theoretical calculations. IM\u2013MS measurements clearly resolved two distinct structural isomers of Ni\n                    <jats:sub>7<\/jats:sub>\n                    O\n                    <jats:sub>6<\/jats:sub>\n                    <jats:sup>+<\/jats:sup>\n                    : three\u2010dimensional (3D) and two\u2010dimensional (2D) structures. The CO adsorption rate constant for the 2D isomer of Ni\n                    <jats:sub>7<\/jats:sub>\n                    O\n                    <jats:sub>6<\/jats:sub>\n                    <jats:sup>+<\/jats:sup>\n                    was determined to be &lt;6\u2009\u00d7\u200910\n                    <jats:sup>\u221212\u2009<\/jats:sup>\n                    cm\n                    <jats:sup>3<\/jats:sup>\n                    molecule\n                    <jats:sup>\u22121\u2009<\/jats:sup>\n                    s\n                    <jats:sup>\u22121<\/jats:sup>\n                    , which is significantly smaller than that of the 3D isomer (1.3\u2009\u00d7\u200910\n                    <jats:sup>\u221210\u2009<\/jats:sup>\n                    cm\n                    <jats:sup>3<\/jats:sup>\n                    molecule\n                    <jats:sup>\u22121\u2009<\/jats:sup>\n                    s\n                    <jats:sup>\u22121<\/jats:sup>\n                    ). Molecular orbital analysis reveals that the \u03c0\u2010back donation cannot occur between the 2D isomer of Ni\n                    <jats:sub>7<\/jats:sub>\n                    O\n                    <jats:sub>6<\/jats:sub>\n                    <jats:sup>+<\/jats:sup>\n                    and a CO molecule due to the absence of d\n                    <jats:sub>yz<\/jats:sub>\n                    orbital character on the Ni atoms. We conclude that the extraordinary stability of Ni\n                    <jats:sub>7<\/jats:sub>\n                    O\n                    <jats:sub>6<\/jats:sub>\n                    <jats:sup>+<\/jats:sup>\n                    originates directly from the character of its constituent Ni atomic orbitals in the 2D isomer.\n                  <\/jats:p>","DOI":"10.1002\/cphc.70599","type":"journal-article","created":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T06:00:46Z","timestamp":1791871246000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Inertness of a Planar Ni\n                    <sub>7<\/sub>\n                    O\n                    <sub>6<\/sub>\n                    <sup>+<\/sup>\n                    Cluster in CO Adsorption Revealed by Ion Mobility\u2013Mass Spectrometry"],"prefix":"10.1002","volume":"27","author":[{"given":"Hiroya","family":"Sakakura","sequence":"first","affiliation":[{"name":"Department of Chemistry Graduate School of Science Tohoku University  Sendai Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuto","family":"Nakajima","sequence":"additional","affiliation":[{"name":"Department of Science Communication Faculty of Science Division I Tokyo University of Science  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keijiro","family":"Ohshimo","sequence":"additional","affiliation":[{"name":"Hokkaido University of Education Sapporo  Sapporo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0822-6285","authenticated-orcid":false,"given":"Fuminori","family":"Misaizu","sequence":"additional","affiliation":[{"name":"Department of Chemistry Graduate School of Science Tohoku University  Sendai Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,12]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1385\u20108947(03)00085\u20108"},{"key":"e_1_2_9_3_1","volume-title":"Introduction to Surface Chemistry and Catalysis","author":"Somorjai G. A.","year":"1994"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcat.2007.12.016"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cej.2006.05.018"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0920\u20105861(96)00044\u20102"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apcata.2008.11.034"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1021\/ar9000026"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/cphc.v10:7"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/nmat1056"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1166\/jnn.2009.433"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1006\/jssc.2000.8838"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1021\/jp400850u"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/jp5115674"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpca.2c09017"},{"key":"e_1_2_9_16_1","volume-title":"Gaussian 16, Revision C.01","author":"Frisch M. J.","year":"2016"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1021\/jp961623v"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1107\/S0567739476001551"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apsusc.2005.03.233"}],"container-title":["ChemPhysChem"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/cphc.70599","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/cphc.70599","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/cphc.70599","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T18:04:11Z","timestamp":1792001051000},"score":1,"resource":{"primary":{"URL":"https:\/\/chemistry-europe.onlinelibrary.wiley.com\/doi\/10.1002\/cphc.70599"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10,12]]},"references-count":18,"journal-issue":{"issue":"19","published-print":{"date-parts":[[2026,10,14]]}},"alternative-id":["10.1002\/cphc.70599"],"URL":"https:\/\/doi.org\/10.1002\/cphc.70599","archive":["Portico"],"relation":{},"ISSN":["1439-4235","1439-7641"],"issn-type":[{"value":"1439-4235","type":"print"},{"value":"1439-7641","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,10,12]]},"assertion":[{"value":"2026-08-26","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-09-30","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-10-12","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70599"}}