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学科主题: 物理化学
题名: Metathesis of alkali-metal amidoborane and FeCl3 in THF
作者: He, Teng1, 2;  Wang, Junhu1;  Chen, Zheng3;  Wu, Anan3;  Wu, Guotao1;  Yin, Jie1, 2;  Chu, Hailiang1;  Xiong, Zhitao1;  Zhang, Tao1;  Chen, Ping1
通讯作者: 熊智涛
刊名: JOURNAL OF MATERIALS CHEMISTRY
发表日期: 2012
DOI: 10.1039/c2jm16331d
卷: 22, 期:15, 页:7478-7483
收录类别: SCI
文章类型: Article
部门归属: DNL19;15
项目归属: DNL1901;1501
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: Metathesis of LiNH2BH3 and FeCl3 in THF solution was investigated in detail. Instead of formation of expected Fe amidoborane i.e., 3LiNH(2)BH(3) + FeCl3 -> 3LiCl + Fe(NH2BH3)(3), 1.5 equiv. H-2/LiNH2BH3 together with LiCl and a black precipitate was produced as a result of salt metathesis and reduction of Fe3+ by BH3. The hydrogen was desorbed in two steps involving a homogeneous interaction of the two starting chemicals to form [Fe(H2N=BH2)(3)] precipitate and subsequent solid-state dissociation of [Fe(H2N=BH2)(3)] to yield a polymeric product, [Fe(HN=BH)(3)](n), respectively. FTIR evidenced the persistence of B-H and N-H stretches in the above two solid products and following the dissociation of [Fe(H2N=BH2)(3)] to release 1 equiv. H-2/LiNH(2)BH3 the B-N bond strengthened. Mossbauer and XAFS both indicated that Fe atoms in these solids are in very similar chemical environments, linking to the neighbouring N and B atoms and bearing slightly positive charge. Most likely, H2N=BH2 in [Fe(H2N=BH2)(3)] binds to Fe as a pi-bound ligand. The mechanism of salt metathesis and reduction of Fe3+ was confirmed based on simulation work on the homogeneous reaction process.
关键词[WOS]: HYDROGEN STORAGE PROPERTIES ;  AMMONIA-BORANE ;  THERMAL-DECOMPOSITION ;  CRYSTAL-STRUCTURE ;  IRON ;  AMIDOTRIHYDROBORATE ;  CHEMISTRY ;  CATALYSTS ;  HYDRIDES ;  RELEASE
语种: 英语
WOS记录号: WOS:000301957300052
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118440
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
3.Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen, Peoples R China

Recommended Citation:
He, Teng,Wang, Junhu,Chen, Zheng,et al. Metathesis of alkali-metal amidoborane and FeCl3 in THF[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(15):7478-7483.
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