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Glycine–methanesulfonic acid (1:1) and glycine–p-toluenesulfonic acid (1:1) crystals: Comparison of structures, hydrogen bonds, and vibrations

✍ Scribed by D. Chwaleba; M.M. Ilczyszyn; M. Ilczyszyn; Z. Ciunik

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
472 KB
Volume
831
Category
Article
ISSN
0022-2860

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✦ Synopsis

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) P2 1 /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-HÁ Á ÁO hydrogen bonds. N-HÁ Á ÁO 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-HÁ Á Áp improper hydrogen bonds are formed. Vibrational spectra of the crystals are related to their structures.

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