Synthesis of Aminodiborane through the Reaction of Ammonia Borane with Acids

Kai Wang; Yi Jing; Xin-Ru Yin; Xi-Meng Chen; Xuenian Chen

doi:10.1021/acs.inorgchem.4c03522

Synthesis of Aminodiborane through the Reaction of Ammonia Borane with Acids

Inorg Chem. 2024 Nov 4. doi: 10.1021/acs.inorgchem.4c03522. Online ahead of print.

Authors

Kai Wang¹, Yi Jing¹, Xin-Ru Yin¹, Xi-Meng Chen², Xuenian Chen^{1

2}

Affiliations

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

PMID: 39495743
DOI: 10.1021/acs.inorgchem.4c03522

Abstract

A facile method for the synthesis of aminodiborane (NH₂B₂H₅, ADB) has been developed through the reaction of ammonia borane (NH₃BH₃, AB) with an ether solution of hydrogen chloride (HCl·Et₂O) at room temperature. In addition, N-alkyl substituted ADB derivatives were synthesized by reacting N-alkyl substituted AB with HCl·Et₂O at 50 °C. The mechanistic studies indicated that the nucleophilic substitution reaction of the B-H bonding pair electrons and the dihydrogen bonding interaction play an important role. This work paves an alternative way to prepare amine borane compounds.