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Study of the Family of Glycine–Selenious Acid Addition Compounds: Crystal Structure of Diglycine Hydrogen Selenite and Vibrational Spectra and DSC Measurement of Diglycine Hydrogen Selenite and Monoglycine–Selenious Acid Crystals

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Study of the Family of Glycine–Selenious Acid Addition Compounds: Crystal Structure of Diglycine Hydrogen Selenite and Vibrational Spectra and DSC Measurement of Diglycine Hydrogen Selenite and Monoglycine–Selenious Acid Crystals

Auteurs : Ivan N Mec [République tchèque] ; Ivana C Amp X0301 Sa Ová [République tchèque] ; Zden K Mi Ka [République tchèque]

Source :

Journal of Solid State Chemistry [ 0022-4596 ] ; 1998.

RBID : ISTEX:75C0281A84E50D2E61F859D011E6622D91ADF07C

English descriptors

Teeft :
- Absorption maxima, Academic press, Acid addition compounds, Acid addition compounds table, Acid crystals, Acta crystallogr, Addition compounds, Antisymetric deformation vibration, Assignment raman, Asymmetric unit, Bond lengths, Carboxyl groups, Crystal structure, Czech republic, Data collection, Diglycine, Diglycine hydrogen selenite, Displacement factors, Dseo, Extensive system, Ferroelectric, Ferroelectric properties, Ferroelectric substances, Ftir, Ftir spectra, Glycine, Glycinium, Glycinium cation, Higher wavenumbers, Hseo, Hydrogen bond, Hydrogen bond system, Hydrogen bonds, Hydrogen selenite anion, Hydrogen selenite anions, Important role, Indicator band, Intense bands, Internal modes, International tables, Laboratory temperature, Lattice modes, Micka, Micka table, Modes translational librational, Molar ratio, Nemec, Nuclear site group analysis, Other addition compounds, Overall character, Phase transition, Phase transitions, Polycrystalline samples, Raman, Raman spectra, Raman spectrosc, Raman spectrum, Selenious acid, Selenious oxide, Selenite, Short hydrogen bonds, Site symmetry, Solid state chem, Space group, Space groups, Spectrochemica acta, Splitting, Temperature interval, Temperature range, Torsion vibrations, Unit cell, Valence vibrations, Vibration, Vibrational, Vibrational bands, Vibrational spectra, Weak band.

Abstract

Abstract: The X-ray structural analysis of diglycine hydrogen selenite has been carried out. The substance crystallizes in the monoclinic space groupP21/c,a=12.2651(7),b=4.8079(6),c=19.9550(10) Å,β=122.745(4)°,V=989.73(14) Å3,Z=4,R=0.0338 for 1647 observed reflections. The crystal structure is formed by zwitterions of glycine (CH2NH+3COO−), glycinium cations (CH2NH+3COOH), and hydrogen selenite anions (HSeO−3) connected by an extensive system of hydrogen bonds. The FTIR and FT Raman spectra of natural and deuterated diglycine hydrogen selenite and monoglycine–selenious acid crystals were recorded and interpreted. The FTIR spectra were studied down to a temperature of 90 K. DSC measurements for both compounds were carried out in the temperature range 95–380 K. No phase transition was found in this temperature range by DSC and FTIR. The existence of ferroelectric properties of diglycine hydrogen selenite and monoglycine–selenious acid crystals can be excluded because of the centrosymmetry of their space groups.

Url:

https://api.istex.fr/ark:/67375/6H6-3916WX3H-Z/fulltext.pdf

DOI: 10.1006/jssc.1998.7855

Affiliations:

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Le document en format XML

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<term>Acid addition compounds table</term>
<term>Acid crystals</term>
<term>Acta crystallogr</term>
<term>Addition compounds</term>
<term>Antisymetric deformation vibration</term>
<term>Assignment raman</term>
<term>Asymmetric unit</term>
<term>Bond lengths</term>
<term>Carboxyl groups</term>
<term>Crystal structure</term>
<term>Czech republic</term>
<term>Data collection</term>
<term>Diglycine</term>
<term>Diglycine hydrogen selenite</term>
<term>Displacement factors</term>
<term>Dseo</term>
<term>Extensive system</term>
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<term>International tables</term>
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<term>Micka</term>
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<term>Phase transitions</term>
<term>Polycrystalline samples</term>
<term>Raman</term>
<term>Raman spectra</term>
<term>Raman spectrosc</term>
<term>Raman spectrum</term>
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<term>Selenious oxide</term>
<term>Selenite</term>
<term>Short hydrogen bonds</term>
<term>Site symmetry</term>
<term>Solid state chem</term>
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<term>Space groups</term>
<term>Spectrochemica acta</term>
<term>Splitting</term>
<term>Temperature interval</term>
<term>Temperature range</term>
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<term>Vibration</term>
<term>Vibrational</term>
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<front><div type="abstract" xml:lang="en">Abstract: The X-ray structural analysis of diglycine hydrogen selenite has been carried out. The substance crystallizes in the monoclinic space groupP21/c,a=12.2651(7),b=4.8079(6),c=19.9550(10) Å,β=122.745(4)°,V=989.73(14) Å3,Z=4,R=0.0338 for 1647 observed reflections. The crystal structure is formed by zwitterions of glycine (CH2NH+3COO−), glycinium cations (CH2NH+3COOH), and hydrogen selenite anions (HSeO−3) connected by an extensive system of hydrogen bonds. The FTIR and FT Raman spectra of natural and deuterated diglycine hydrogen selenite and monoglycine–selenious acid crystals were recorded and interpreted. The FTIR spectra were studied down to a temperature of 90 K. DSC measurements for both compounds were carried out in the temperature range 95–380 K. No phase transition was found in this temperature range by DSC and FTIR. The existence of ferroelectric properties of diglycine hydrogen selenite and monoglycine–selenious acid crystals can be excluded because of the centrosymmetry of their space groups.</div>
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Study of the Family of Glycine–Selenious Acid Addition Compounds: Crystal Structure of Diglycine Hydrogen Selenite and Vibrational Spectra and DSC Measurement of Diglycine Hydrogen Selenite and Monoglycine–Selenious Acid Crystals

Study of the Family of Glycine–Selenious Acid Addition Compounds: Crystal Structure of Diglycine Hydrogen Selenite and Vibrational Spectra and DSC Measurement of Diglycine Hydrogen Selenite and Monoglycine–Selenious Acid Crystals

Source :

English descriptors

Abstract

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