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Synthesis and properties of hypervalent electron-rich pentacoordinate nitrogen compounds

Isolation and structural characterization of hypervalent electron-rich pentacoordinate nitrogen species have not been achieved despite continuous attempts for over a century. Herein we report the first synthesis and isolation of air stable hypervalent electron-rich pentacoordinate nitrogen cationic...

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Detalles Bibliográficos
Autores principales: Yan, Chenting, Takeshita, Masato, Nakatsuji, Jun-ya, Kurosaki, Akihiro, Sato, Kaoko, Shang, Rong, Nakamoto, Masaaki, Yamamoto, Yohsuke, Adachi, Yohei, Furukawa, Ko, Kishi, Ryohei, Nakano, Masayoshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8159240/
https://www.ncbi.nlm.nih.gov/pubmed/34122965
http://dx.doi.org/10.1039/d0sc00002g
Descripción
Sumario:Isolation and structural characterization of hypervalent electron-rich pentacoordinate nitrogen species have not been achieved despite continuous attempts for over a century. Herein we report the first synthesis and isolation of air stable hypervalent electron-rich pentacoordinate nitrogen cationic radical (11-N-5) species from oxidation of their corresponding neutral (12-N-5) species. In the cationic radical species, the nitrogen centers adopt a trigonal bipyramidal geometry featuring a 3-center-5-electron hypervalent attractive interaction. The combination of single crystal X-ray diffraction analysis and computational studies revealed weak N–O interactions between the central nitrogen cation and oxygen atoms. This successful design strategy and isolation of air-stable pentacoordinate hypervalent nitrogen species allow further investigations on reactivity and properties resulting from these unusually weakly coordinating interactions in nitrogen compounds.