Improved Methods for the Synthesis of B10H14 and N-Heterocycle-Coordinated B9H13 (N-Het·B9H13)

Xi-Meng Chen; Yi-Wen Ge; Xing-Chao Yu; Peng Wang; Kai Jiang; Yan-Na Ma; Xuenian Chen

doi:10.1021/acs.inorgchem.4c04530

Improved Methods for the Synthesis of B₁₀H₁₄ and N-Heterocycle-Coordinated B₉H₁₃ (N-Het·B₉H₁₃)

Inorg Chem. 2025 Jan 13;64(1):268-274. doi: 10.1021/acs.inorgchem.4c04530. Epub 2024 Dec 26.

Authors

Xi-Meng Chen¹, Yi-Wen Ge¹, Xing-Chao Yu¹, Peng Wang¹, Kai Jiang², Yan-Na Ma³, Xuenian Chen^{1

3}

Affiliations

¹ School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Materials, Henan Normal University, Xinxiang, Henan 453007, China.
² School of Environment, Henan Normal University, Xinxiang, Henan 453007, China.
³ College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.

PMID: 39723921
DOI: 10.1021/acs.inorgchem.4c04530

Abstract

Improved methods for the synthesis of B₁₀H₁₄ and a series of N-heterocycle-coordinated B₉H₁₃ complexes (N-Het·B₉H₁₃) have been developed with readily obtained KB₁₁H₁₄ as the starting material. Oxidation of KB₁₁H₁₄ could provide B₁₀H₁₄ in over 90% yield. Then, the N-Het·B₉H₁₃ complexes were prepared from the as-synthesized B₁₀H₁₄ through in situ multistep reactions by reacting with NaH, N-heterocycles, and dilute hydrochloric acid. Among these N-Het·B₉H₁₃ complexes, 4-(triphenylvinyl)pyridine-coordinated B₉H₁₃ (1k) exhibits a significant aggregation-induced emission (AIE) effect in a THF/H₂O mixed solution, and 8-aminoisoquinoline-coordinated B₉H₁₃ (2p) exhibits a positive solvatochromism phenomenon. These improved methods provide new approaches to synthesizing B₁₀H₁₄ and N-Het·B₉H₁₃ complexes with potential applications in luminescent materials.