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Inne
Glycine-methanesulfonic acid (1:1) and glycine-p-toluenesulfonic acid (1:1) crystals: comparison of structures, hydrogen bonds, and vibrations.
Autorzy
Rok wydania
2007
Czasopismo
Journal of Molecular Structure
Numer woluminu
831
Strony
119-134
DOI
10.1016/j.molstruc.2006.07.026
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The crystal structures of glycine–methanesulfonic acid (1:1) and glycine–p-toluenesulfonic acid (1:1) have been investigated by X-ray diffraction at 293 K. They belong to centrosymmetric: (i) P21/n space group of monoclinic system and (ii) Pbca space group of orthorhombic system, respectively. Both crystals consist of glycinium–sulfonate dimers (methane- or p-toluenesulfonate, respectively) with medium-strong and very similar O–H⋯O hydrogen bonds. N–H⋯O bonds connect glycinium–sulfonate dimers into infinite chains. Both sulfonic acids reveal very similar acidic properties. In glycine–p-toluenesulfonic acid (1:1) crystal very weak, C–H⋯π improper hydrogen bonds are formed. Vibrational spectra of the crystals are related to their structures.
Słowa kluczowe
Glycine–methanesulfonic acid crystal, Glycine–p-toluenesulfonic acid crystal, Vibrational spectra, X-ray diffraction, DSC, Hydrogen bond, Improper hydrogen bond, Blue shift, Acidity
Adres publiczny
https://doi.org/10.1016/j.molstruc.2006.07.026
Strona internetowa wydawcy
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