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Inne
Hydrogen bonds in betaine-acid (1:1) crystals revealed by Raman and 13C chemical shift tensors.
Autorzy
Rok wydania
2017
Czasopismo
Journal of Molecular Structure
Numer woluminu
1137
Strony
292-299
DOI
10.1016/j.molstruc.2017.02.048
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
H-bonds of five betaine-acid (1:1) crystals are considered by analysis of tensors based on the Raman scissoring mode and 13C chemical shift of the betaine –CO1O2− carboxylate group. The leading structural factor in these systems is the strongest H-bond linking the betaine and the acidic moieties, (O1⋯H-O)com. The Raman and NMR tensors are strongly related to its character and to the R(O1⋯O)com distance. Very high molecular polarizability variation due to the scissoring vibration was found for the betaine-selenious acid crystal. The probable reason is modest network of H-bonds in this case and relatively high proton polarizability of these bonds
Słowa kluczowe
Betaine-acid crystals, hydrogen bonds, Raman tensor, NMR tensor, Proton polarizability
Adres publiczny
http://dx.doi.org/10.1016/j.molstruc.2017.02.048
Strona internetowa wydawcy
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