Light-Induced Increase in Bond Strength─from Chalcogen Bond to Three-Electron σ Bond upon Excitation.

• Tác giả: Gebhard Haberhauer, Saber Mehrparvar, Zoe Nonie Scheller
• Ngôn ngữ: eng
• Ký hiệu phân loại: 305.568 +Alienated and excluded classes
• Thông tin xuất bản: United States : Journal of the American Chemical Society , 2025
• Bộ sưu tập: NCBI
• ID: 193399

Tóm tắt

Chalcogen bonds are σ hole interactions between a chalcogen center and a Lewis base center and have been applied in recent years as an alternative to hydrogen bonds in supramolecular chemistry and catalysis. While the electronic interactions of chalcogen bonds in the ground state have been intensively analyzed, there is barely any knowledge about the electron structure in the excited state. This is despite the fact that in some cases photoswitches containing chalcogen bonds exhibit exceptional switching behavior. Here, we investigate the effect of light absorption on chalcogen bonds containing divalent chalcogen centers. Quantum chemical calculations reveal that in the excited S