Ammonium Aminodiboranate: A Long-Sought Isomer of Diammoniate of Diborane and Ammonia Borane Dimer

被引：12

作者：

Chen, Weidong ^{[1
,2
]}

Yu, Haibo ^{[3
]}

Wu, Guotao ^{[1
]}

He, Teng ^{[1
]}

Li, Zhao ^{[1
,2
]}

Guo, Zaiping ^{[4
]}

Liu, Huakun ^{[4
]}

Huang, Zhenguo ^{[4
]}

Chen, Ping ^{[1
,5
,6
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Univ Wollongong, Sch Chem, Wollongong, NSW 2522, Australia

[4] Univ Wollongong, ISEM, Wollongong, NSW 2522, Australia

[5] Chinese Acad Sci, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China

[6] Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat IChEM, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2016年 / 22卷 / 23期

基金：

澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

aminodiboranes; boranes; boron; hydrogen bonds; INORGANIC BUTANE ANALOG; CHEMICAL EVIDENCE; BOROHYDRIDE; NH3BH2NH2BH3; EVOLUTION; HYDROGEN; HYDRIDES; RELEASE; SODIUM; SALTS;

D O I：

10.1002/chem.201601375

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ammonium minodiboranate ([NH4] [BH3NH2BH3]) is a long-sought isomer of diammoniate of diborane ([NH3BH2NH3][BH4]) and ammonia borane (NH3BH3) dimer. Our results show that [NH4][BH3NH2BH3] is stable in tetrahydrofuran at -18 degrees C and decomposes rapidly to NH3BH2NH2BH3 and H-2 at elevated temperatures. The decomposition pathway is dictated by the dihydrogen bonding between H delta+ on NH4+ and H delta- on BH3, as confirmed by theoretical calculations. This is in contrast to the interconversion between [NH3BH2NH3][BH4] and (NH3BH3)(2), although all three have dihydrogen bonds and the same stoichiometry.

引用

页码：7727 / 7729

页数：3

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