Journal
ORGANIC LETTERS
Volume 17, Issue 6, Pages 1593-1596Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.5b00489
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Funding
- Adaptable and Seamless Technology Transfer Program through target-driven R&D, Japan Science and Technology Agency (JST)
- Ministry of Education, Culture, Sports, Science, and Technology, Japan [24102013, 2401]
- Grants-in-Aid for Scientific Research [14J03426] Funding Source: KAKEN
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Air- and moisture-stable dibenzo[b,f]gallepins with planar seven-membered rings have been designed and synthesized. From X-ray single-crystal analyses, the effects of the coordination numbers were evaluated at the gallium atom on the planarity of the seven-membered rings with a series of the synthesized complexes. Accordingly, it was shown that the seven-membered ring of dibenzogallepin involving a three-coordinated gallium atom presented the highest planarity compared to other dibenzogallepins with four- or five-coordinated gallium atoms. In addition, from theoretical calculations, it was proposed that the electronic states of the gallium atom in the complexes contributed to the energy levels of LUMOs+1.
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