Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 29, Pages 11058-11061Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja203333j
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology of Japan [19002008]
- Grants-in-Aid for Scientific Research [19002008] Funding Source: KAKEN
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Diborane(6) as a H-bridged dimer of mono-borane can be converted cleanly by two-electron reduction into diborane (6) dianion, which is isoelectronic with ethane, through B-B sigma-bond formation when each boron atom has a bulky ligand on it. The existence of the B B sigma bond is supported by the X-ray molecular structure [B-B bond length of 1.924(3) angstrom], NMR studies, magnetic susceptibility measurements, and DFT calculations. Stepwise hydride abstraction reactions of the diborane(6) dianion produce the corresponding H-bridged diborane (5) anion and doubly H-bridged diborane(4) without B-B bond scission.
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