Infrared studies on some ferroelectric compounds of glycine

Khanna, R. K.; Horák, M.; Lippincott, Ellis R.

doi:10.1016/0371-1951(66)80224-2

Cited by 21 publications

(9 citation statements)

References 8 publications

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“…Its splitting into doublets is apparently caused by the presence of two nonequivalent glycine forms in the crystal. Similar splitting has also been observed in the spectra of other addition compounds of glycine (21,22). In the IR spectra of the natural molecules these bands are almost overlapped by the bands of the stretching N-H and O-H vibrations.…”

Section: Vibrational Spectra Of Dgse(iv)supporting

confidence: 77%

“…Although this band can be found in the 1615-1635 cm\ region for a number of addition compounds of glycine (21,22), the fact that practically no shift was observed on deuteration provides support for our interpretation.…”

Section: Vibrational Spectra Of Mgse(iv)supporting

confidence: 66%

“…The assignment of the bands in the vibrational spectra of MGSe(IV) and its deuterates was based on the results of previous studies on the interpretation of the spectra of -glycine (15)(16)(17), selenious acid (18)(19)(20), and the addition compounds of glycine (21)(22)(23). Broad, intense bands in the IR spectrum in the 3200-2100 cm\ region are characteristic for the stretching vibrations of the N-H and O-H groups connected in hydrogen bonds in a crystal.…”

Section: Vibrational Spectra Of Mgse(iv)mentioning

confidence: 99%

“…The ''indicator band'' at 2020 cm\ in the IR spectrum is an important indication of the presence of the NH> group in the compound (21,22). This band is a combination of the antisymetric deformation vibration and torsion vibration of the NH> group.…”

Section: Vibrational Spectra Of Mgse(iv)mentioning

confidence: 99%

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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

Němec

Cı́sařová

Mička

1998

Journal of Solid State Chemistry

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Section: Vibrational Spectra Of Dgse(iv)supporting

confidence: 77%

Section: Vibrational Spectra Of Mgse(iv)supporting

confidence: 66%

Section: Vibrational Spectra Of Mgse(iv)mentioning

confidence: 99%

Section: Vibrational Spectra Of Mgse(iv)mentioning

confidence: 99%

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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

Němec

Cı́sařová

Mička

1998

Journal of Solid State Chemistry

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“…22 The presence of the NH 3 group in the compound is confirmed also by an "indicator band" at 2053 cm −1 . 23,24 The stretching vibration bands of the C H groups, observed between 3200 and 2600 cm −1 , are almost overlapped by the bands of the stretching N H and O H vibrations. Frequencies in the range 1630-1570 cm −1 are assigned to C C stretching as well as the NH 3 bending.…”

Section: Downloaded By [Erciyes University] At 04:29 05 January 2015mentioning

confidence: 96%

Synthesis and Characterization of a New Monophosphate (C₆H₆NCl₂)(H₂PO₄) with an Interesting Chlorine-Mediated Framework

Kefi

Nasr

Lefèbvre

2007

Phosphorus, Sulfur, and Silicon and the Related Elements

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Chemical preparation, crystal structure, and NMR spectroscopy of a new monophosphate with 2,3-dichloroanilinium cation are given. This new compound crystallizes in the monoclinic system, with the space group P21/n and the following parameters: a = 11.031 (6), b = 6.007(3), c = 15.227(2)Å β = 98.98(4), V = 996.73(3)Å 3 , and Z = 4. The crystal structure has been determined and refined to R = 0.048 and R w = 0.1317 using 2030 independent reflections. The structure can be described as clusters that aggregate with six organic molecules, resulting in a (1 01) two dimensional sheet, and formation of arrays in three dimensions, via various interactions (H-bonds, electrostatic, Van der Waals). In addition, C Cl . . . π interactions are observed as a consequence of the chlorine atom being flanked by two phenyl rings of the neighboring molecules. The structure has also short intermolecular Cl . . . Cl interactions [type I, Cl . . . Cl = 3.380(1)Å, C Cl . . . Cl = 132.26 • ]. This compound has also been investigated by IR, thermal analysis, and solid-state 13 C and 31 P MAS NMR spectroscopy combined with Ab Initio calculations.

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Vibrational spectra and phase transition in triglycine sulpho‐phosphate

Joe

Aruldhas

Anbukumar

et al. 1994

Cryst. Res. Technol.

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Infrared and single crystal Raman spectra for various polarization geometries of Triglycine SulphoPhosphate (TGSP) have been recorded and analysed. The bonds of hydrogen atoms in H,S04 and H,PO, groups are shown to be weak and the possibility of proton transfer from H,S0,/H,P04 group is indicated. Two different types of glycinium ions are shown to be present in the unit cell. Temperature dependent Raman spectra of TGSP have been recorded. The phase transition detected around 325 K in TGSP is explained in terms of the flipping motion of the glycinium ion and of attaining a higher crystal symmetry. The influence of inorganic ions has been studied by GAFFER et al. They have shown that doping with Cu2 +, Mg2+ and Cr3+ considerably reduced the ability of TGS to convert mechanical energy to electrical energy while this ability slightly increased at room temperature when admixed with Fe3+. It has been found that the replacement of SO, by BeF, or SeO, group in TGS alters the transition temperature and other ferroelectric properties considerably (WINTERFELDT et al.; BLINC et al.). In the present study, an investigation has been made to analyse the vibrational spectra of TGS, P, --x (x = 0.5) and the temperature dependence of low frequency modes above and below the transition temperature. ExperimentalSingle crystals of triglycine sulpho-phosphate (TGSP) are synthesised from A R grade glycine, sulphuric acid, and orthophosporic acid ( NATARAJAN et al.) in the stoichiometric ratio. Good optical quality single crystals are used to record the Raman spectra in the 90" scattering geometry, for the four orientations Z[YY[X, Z[XY]X, Z[YZ[X and Z[XZ]X using a Spex Ramalog 1401 spectrometer. The green line at 514.5 nm generated by an Ar' ion laser operating at 80 mw power, is used as the source. Bruker IFS-85 (4000-500 cm-') and Bio-Rad FTS-7 (500-200 cm-') FT-IR spectrometers are used to obtain the IR spectra with the sample in KBr.The structural data are collected on a ENRAF-NONIVS diffractometer with MoK,-radiation to confirm the crystal structure of TGSP.

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Infrared studies on some ferroelectric compounds of glycine

Cited by 21 publications

References 8 publications

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

Synthesis and Characterization of a New Monophosphate (C₆H₆NCl₂)(H₂PO₄) with an Interesting Chlorine-Mediated Framework

Vibrational spectra and phase transition in triglycine sulpho‐phosphate

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Infrared studies on some ferroelectric compounds of glycine

Cited by 21 publications

References 8 publications

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

Synthesis and Characterization of a New Monophosphate (C6H6NCl2)(H2PO4) with an Interesting Chlorine-Mediated Framework

Vibrational spectra and phase transition in triglycine sulpho‐phosphate

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Synthesis and Characterization of a New Monophosphate (C₆H₆NCl₂)(H₂PO₄) with an Interesting Chlorine-Mediated Framework