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Exploration of low steric bulk improves thermochromism in planar bismuth triamides, suggesting new structural insights.
Planar bismuth triamides with tunable stereoelectronics offer a versatile platform for studying the effects of geometric constraints in p‐block elements. Here we show that exploring the low steric bulk regime in these compounds unlocks categorically new phenomena such as epitaxial hierarchical ordering, thermochromism, C─H/O activation, and 6‐electron pincer‐to‐pincer redox transmetalation. These behaviors are not observed in sterically encumbered derivatives, emphasizing the role of steric modulation in unlocking new phenomena in geometrically‐constrained main group complexes.
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Howlett et al. (2025) studied this question.
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