L3 C3 P3 : Tricarbontriphosphide Tricyclic Radicals and Cations Stabilized by Cyclic (alkyl)(amino)carbenes.
Angew Chem Int Ed Engl
; 57(1): 198-202, 2018 01 02.
Article
em En
| MEDLINE
| ID: mdl-29106069
ABSTRACT
Alkynes usually oligomerize to give rings with a conjugated π-electron system. In contrast, phosphaalkynes, R-C≡P, frequently give compounds with polycyclic structures, which are thermodynamically more stable than the corresponding π-conjugated isomers. The syntheses of the first C3 P3 tricyclic compounds are reported with either radical or cationic ground states stabilized by cyclic (alkyl)(amino)carbenes (CAACs). These compounds may be considered as examples of tricarbontriphosphide coordinated by carbenes and are likely formed via trimerization of the corresponding mono-radicals CAAC-CP. . The mechanism for the formation of these tricarbontriphosphide radicals has been rationalized by a combination of experiments and DFT calculations.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
China