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However, the generation of NCN via C\u2500N coupling from the abundantly available molecules N\n                    <jats:sub>2<\/jats:sub>\n                    and CO\n                    <jats:sub>2<\/jats:sub>\n                    remains a significant challenge due to the inertness of their chemical bonds and competing side reactions. In this study, by using state\u2010of\u2010the\u2010art mass spectrometry and quantum chemistry calculations, the niobium oxide cluster anion Nb\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    <jats:sup>\u2013<\/jats:sup>\n                    is shown to enable the co\u2010conversion of N\n                    <jats:sub>2<\/jats:sub>\n                    and CO\n                    <jats:sub>2<\/jats:sub>\n                    at room temperature, achieving the formation of two C\u2500N bonds and the generation of a free NCN radical upon external energy input. The prior complete dissociation of N\n                    <jats:sub>2<\/jats:sub>\n                    on Nb\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    <jats:sup>\u2013<\/jats:sup>\n                    was found to generate two bridgingly bonded nitrogen atoms (N\n                    <jats:sub>b<\/jats:sub>\n                    ), together with adjacent metal centers, which function as Lewis acid\u2212base pairs (Nb\n                    <jats:sup>\u03b4+<\/jats:sup>\n                    \u2500N\n                    <jats:sup>\u03b4\u2013<\/jats:sup>\n                    ) to activate CO\n                    <jats:sub>2<\/jats:sub>\n                    , leading to the spontaneous formation of the first C\u2500N bond. The nitrogen\u2010centered radicals and dinuclear metal (Nb) centers play pivotal roles in promoting the formation of the second C\u2500N bond and in facilitating the removal of two oxygen atoms from CO\n                    <jats:sub>2<\/jats:sub>\n                    , culminating in the generation of NCN. This study introduces a novel route for NCN radical generation through the unprecedented co\u2010conversion of N\n                    <jats:sub>2<\/jats:sub>\n                    and CO\n                    <jats:sub>2<\/jats:sub>\n                    .\n                  <\/jats:p>","DOI":"10.1002\/anie.202519854","type":"journal-article","created":{"date-parts":[[2025,11,17]],"date-time":"2025-11-17T08:18:41Z","timestamp":1763367521000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Generation of the NCN Radical from Co\u2010Conversion of N\n                    <sub>2<\/sub>\n                    and CO\n                    <sub>2<\/sub>\n                    Mediated by the Niobium Oxide Cluster Anion Nb\n                    <sub>2<\/sub>\n                    O\n                    <sub>3<\/sub>\n                    <sup>\u2013<\/sup>"],"prefix":"10.1002","volume":"65","author":[{"given":"Xiao\u2010Xiao","family":"Liu","sequence":"first","affiliation":[{"name":"State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences  Beijing 100190 China"},{"name":"University of Chinese Academy of Sciences  Beijing 100049 China"},{"name":"Beijing National Laboratory for Molecular Sciences and CAS Research\/Education Centre of Excellence in Molecular Sciences  Beijing 100190 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zi\u2010Yu","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences  Beijing 100190 China"},{"name":"Beijing National Laboratory for Molecular Sciences and CAS Research\/Education Centre of Excellence in Molecular Sciences  Beijing 100190 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