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To capture magnetic-field-induced changes in reactivity, current-density-functional theory (current-DFT) calculations are interpreted through conceptual density-functional theory (conceptual DFT) descriptors, namely global hardness and local softness via Fukui functions, focusing on the evolution of the electronic structure and associated properties with increasing field strength in different orientations. By extending our previous adiabatic treatment of molecules to include higher-spin states, in analogy with an earlier study on atoms, and by considering the symmetry properties of relevant quantum-chemical quantities within full magnetic groups using the qsym2 framework, we uncover substantial magnetic-field-induced modulations of both molecular polarity and the shape of the Fukui function. Despite these modulations, the ambident nucleophilicity of both (NO2)\u2212 and SCN\u2212 is largely preserved, as is the preference for attack by soft electrophiles at the sulfur end of SCN\u2212. At higher field strengths, however, the Fukui functions become increasingly diffuse, reflecting the growing importance of external magnetic interactions relative to internal electrostatic forces. The resulting redistribution of local reactivity not only predicts reaction pathways with unexpected geometries but also raises the possibility that regioselectivity may become progressively less well-defined in the strong-field regime.<\/jats:p>","DOI":"10.1063\/5.0351445","type":"journal-article","created":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T11:32:51Z","timestamp":1790595171000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Reactivity of ambident nucleophiles in magnetic fields: A combined conceptual DFT and current-DFT study"],"prefix":"10.1063","volume":"165","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5226-4054","authenticated-orcid":false,"given":"Bang C.","family":"Huynh","sequence":"first","affiliation":[{"name":"Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford 1 , Oxford OX1 3QZ,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2462-3328","authenticated-orcid":false,"given":"Meilani","family":"Wibowo-Teale","sequence":"additional","affiliation":[{"name":"School of Chemistry, University of Nottingham 2 , Nottingham NG7 2RD,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9617-1143","authenticated-orcid":false,"given":"Andrew M.","family":"Wibowo-Teale","sequence":"additional","affiliation":[{"name":"School of Chemistry, University of Nottingham 2 , Nottingham NG7 2RD,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4900-7513","authenticated-orcid":false,"given":"Frank","family":"De Proft","sequence":"additional","affiliation":[{"name":"Research Group of General Chemistry (ALGC), Vrije Universiteit Brussel (VUB) 3 , Pleinlaan 2, B-1050 Brussels,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1897-7285","authenticated-orcid":false,"given":"Paul","family":"Geerlings","sequence":"additional","affiliation":[{"name":"Research Group of General Chemistry (ALGC), Vrije Universiteit Brussel (VUB) 3 , Pleinlaan 2, B-1050 Brussels,","place":["Belgium"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2026,9,28]]},"reference":[{"key":"2026092807324551500_c1","doi-asserted-by":"publisher","first-page":"5146","DOI":"10.1039\/c8cs00352a","article-title":"Harnessing electrostatic catalysis in single molecule, electrochemical and chemical systems: A rapidly growing experimental tool box","volume":"47","year":"2018","journal-title":"Chem. 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