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- Title
Water Entrapped inside Fullerene Cages: A Potential Probe for Evaluation of Bond Polarization.
- Authors
Hashikawa, Yoshifumi; Murata, Michihisa; Wakamiya, Atsushi; Murata, Yasujiro
- Abstract
The concept of the bond polarization is a useful tool to understand chemical reactions and fundamental properties of compounds. However, experimental considerations are limited owing to its difficulty of reliable description. We demonstrated that geometrically isolated H2O inside the cage of fullerene C60 is a possible probe to evaluate the polarization degree of covalent bonds C(C60)−X (X=heteroatom) on the C60 cage. The 1H NMR relaxation times of entrapped H2O have been systematically measured at variable temperatures for H2O@C60X (X=CR2, NR, O, and O2). The results followed in the order of electronegativities of C (2.55), N (3.04), and O (3.44), indicating that entrapped H2O can sensitively respond to the degree of the bond polarization.
- Subjects
FULLERENES; WATER chemistry; NUCLEAR magnetic resonance spectroscopy; ELECTRONEGATIVITY; CHEMICAL bonds; CHEMICAL reactions
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 42, p13303
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201607040