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These behaviors are not observed in sterically encumbered derivatives, emphasizing the role of steric modulation in unlocking new phenomena in geometrically\u2010constrained main group complexes.<\/jats:p>","DOI":"10.1002\/anie.202518367","type":"journal-article","created":{"date-parts":[[2025,11,17]],"date-time":"2025-11-17T08:58:10Z","timestamp":1763369890000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Steric Pruning Unlocks Hierarchical Structuring, Thermochromism, C\u2010H\/O Activation, and 6\u2010electron Redox Transmetalation in Planar Bismuth Triamides"],"prefix":"10.1002","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-3637-2965","authenticated-orcid":false,"given":"William P.","family":"Howlett","sequence":"first","affiliation":[{"name":"Department of Chemistry Dalhousie University  6243 Alumni Crescent Halifax NS B3H 4R2 Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tyler J.","family":"Hannah","sequence":"additional","affiliation":[{"name":"Department of Chemistry Dalhousie University  6243 Alumni Crescent Halifax NS B3H 4R2 Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-7803-8395","authenticated-orcid":false,"given":"Lars J. 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