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Whereas Pd\n                    <jats:sup>0<\/jats:sup>\n                    \/Pd\n                    <jats:sup>II<\/jats:sup>\n                    catalysis requires substrate-specific ligand optimization to balance the competing demands of oxidative addition and reductive elimination, Ni\n                    <jats:sup>I<\/jats:sup>\n                    \/Ni\n                    <jats:sup>III<\/jats:sup>\n                    catalysis offers a complementary strategy because the bond-forming step is intrinsically favourable. However, contemporary Ni\n                    <jats:sup>I<\/jats:sup>\n                    \/Ni\n                    <jats:sup>III<\/jats:sup>\n                    methodologies suffer from insufficient oxidative addition reactivity, restricting the aryl halide scope and requiring high catalyst loadings. Here we show that mechanistically guided ligand design overcomes these limitations. Together with a non-nucleophilic base additive that promotes direct visible-light generation of Ni\n                    <jats:sup>I<\/jats:sup>\n                    from a bench-stable Ni\n                    <jats:sup>II<\/jats:sup>\n                    precatalyst, this ligand design enables the coupling of electron-rich aryl bromides with N-, O-, S- and P-based nucleophiles at nickel loadings as low as 100\u2009ppm. The method is compatible with sterically encumbered nucleophiles and enables gram-scale synthesis and late-stage functionalization of complex molecules.\n                  <\/jats:p>","DOI":"10.1038\/s41929-026-01616-6","type":"journal-article","created":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T09:04:00Z","timestamp":1790672640000},"page":"1132-1140","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Ligand design broadens NiI-catalysed C(sp2)\u2013heteroatom couplings of aryl bromides at low catalyst loadings"],"prefix":"10.1038","volume":"9","author":[{"given":"Aleksander R.","family":"Bena","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Trisha","family":"Banik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christos","family":"Giannoudis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0458-5187","authenticated-orcid":false,"given":"Florian","family":"Ortis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3100-4293","authenticated-orcid":false,"given":"Daniel","family":"B\u00edm","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-2726-5955","authenticated-orcid":false,"given":"Haralds","family":"Baunis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gayathri H.","family":"Palissery","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8689-388X","authenticated-orcid":false,"given":"Bartholom\u00e4us","family":"Pieber","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,9,29]]},"reference":[{"key":"1616_CR1","doi-asserted-by":"publisher","first-page":"12564","DOI":"10.1021\/acs.chemrev.6b00512","volume":"116","author":"P Ruiz-Castillo","year":"2016","unstructured":"Ruiz-Castillo, P. & Buchwald, S. 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The other authors declare no competing interests.","order":1,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Ethics"}}]}}