Isolation of Fluorescent 2π-Aromatic 1,3-Disiladiboretenes

Jiawei Fan; Ling Yue; Ce Liu; Bin Rao; Guijiang Zhou; Anyang Li; Bochao Su

doi:10.1021/jacs.3c09747

Isolation of Fluorescent 2π-Aromatic 1,3-Disiladiboretenes

J Am Chem Soc. 2024 Jan 10;146(1):39-44. doi: 10.1021/jacs.3c09747. Epub 2023 Dec 20.

Authors

Jiawei Fan¹, Ling Yue¹, Ce Liu², Bin Rao¹, Guijiang Zhou¹, Anyang Li², Bochao Su^{1

3}

Affiliations

¹ School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, China.
² Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China.
³ State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China.

PMID: 38117532
DOI: 10.1021/jacs.3c09747

Abstract

Herein, we reported the isolation of 2π-aromatic disiladiboretenes (L₂Si₂B₂Ph₂) [L = ArC(N^tBu)₂, Ar = Ph (1), Mes (2)], which have been synthesized from the straightforward reduction of silylene-borane adducts (LSiX → BX₂Ph) [X = Cl, Br] with potassium graphite (KC₈). X-ray diffraction analysis of 1 and 2 revealed that the Si₂B₂ units are completely planar, and DFT calculations suggested delocalization of 2π-electrons over the Si₂B₂ rings. Moreover, their photophysical properties and reactivity toward sulfur were also investigated in detail.