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- Title
Isolation of a Nitromethane Anion in the Calix-Shaped Inorganic Cage.
- Authors
Kikukawa, Yuji; Kitajima, Hiromasa; Kuwajima, Sho; Hayashi, Yoshihito; Berberan-Santos, Mario; Marcos, Paula M.
- Abstract
A calix-shaped polyoxometalate, [V12O32]4− (V12), stabilizes an anion moiety in its central cavity. This molecule-sized container has the potential to control the reactivity of an anion. The highly-reactive cyanate is smoothly trapped by V12 to form [V12O32(CN)]5−. In the CH3NO2 solution, cyanate abstracts protons from CH3NO2, and the resultant CH2NO2− is stabilized in V12 to form [V12O32(CH2NO2)]5− (V12(CH2NO2)). A crystallographic analysis revealed the double-bond characteristic short bond distance of 1.248 Å between the carbon and nitrogen atoms in the nitromethane anion in V12. 1H and 13C NMR studies showed that the nitromethane anion in V12 must not be exchanged with the nitromethane solvent. Thus, the V12 container restrains the reactivity of anionic species.
- Subjects
NITROMETHANE; ANIONS; CHEMICAL bond lengths; KEGGIN anions; HOST-guest chemistry
- Publication
Molecules, 2020, Vol 25, Issue 23, p5670
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules25235670