Crystal growth and comparative studies of XRD, spectral studies on new NLO crystals: l-Valine and l-valinium succinate

Raja, C. Ramachandra; Joseph, Antony

doi:10.1016/j.saa.2009.08.023

Cited by 31 publications

(6 citation statements)

References 10 publications

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“…'L-valine succinate' [37] 4 are in fact only the pure amino acid. Of course, it is possible (albeit highly unlikely) that the unit cell of a new compound has similar dimensions as that of its precursor, so further experimental results have to be taken in account.…”

Section: Identification Of the Samplementioning

confidence: 99%

“…Nevertheless, for above examples, these additional data support the fact that the original amino acid was obtained. For instance, the IR spectra of '1,3-diglycinyl thiourea' [27] and 'triglycine acetate' [28] match with that of pure glycine, the spectrum of 'L-alaninium fumarate' [33] with that of pure L-alanine, and the spectrum of 'L-valine succinate' with that of 'L-valine' [37] (for difficulties with spectra see below). In other cases, no unit cell parameters are given at all, e.g.…”

Section: Identification Of the Samplementioning

confidence: 99%

“…[32] 'L-alaninium succinate' [43] Crystal is actually L-threonine 'L-threonium acetate' [35] Crystal is actually L-valine 'L-valinium succinate' [37] Misinterpretation of IR-spectra Diglycine nitrate [44] 'Glycine nitrate' [63] Indeterminate chemical composition 'L-valinium fumarate' [42] g-glycine [45] 'Glycine zinc sulphate' [47,48] 'GlyBaCl 2 '…”

Section: Problem Crystal Species Referencementioning

confidence: 99%

“…Such bands can be caused by the absorption of water due to the hygroscopicity of KBr [58]. This problem has repeatedly lead to the incorrect belief that a new compound has been observed, as in the above stated cases of 'L-valine succinate' [37] and 'L-alanine succinate' [43].…”

Section: Problem Crystal Species Referencementioning

confidence: 99%

See 3 more Smart Citations

Difficulties in the growth and characterization of non-linear optical materials: A case study of salts of amino acids

Fleck

Petrosyan

2010

Journal of Crystal Growth

115

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Section: Identification Of the Samplementioning

confidence: 99%

Section: Identification Of the Samplementioning

confidence: 99%

Section: Problem Crystal Species Referencementioning

confidence: 99%

Section: Problem Crystal Species Referencementioning

confidence: 99%

See 2 more Smart Citations

Difficulties in the growth and characterization of non-linear optical materials: A case study of salts of amino acids

Fleck

Petrosyan

2010

Journal of Crystal Growth

115

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“…Hence, lots of researches are being carried out to synthesize new organic NLO materials. In our laboratory, we engaged in finding new NLO materials and some of the results were reported recently [6][7][8]. Growth and characterization on nonlinear optical crystal L-valinium picrate were carried out and reported earlier [9][10][11][12].…”

Section: Introductionmentioning

confidence: 98%

Comparative Spectroscopic Studies on Pure, 10 and 50 mol% Glycine Mixed L-Valinium Picrate Crystals

Joseph¹,

Ebenezar²,

Raja³

2014

JMMCE

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Nonlinear optical crystals of pure, 10 and 50 mol% glycine mixed L-valinium picrate have been grown from saturated aqueous solution by slow evaporation method at a temperature of 36˚C using a constant temperature bath of accuracy of ±0.01˚C. The synthesized organic optical material has been purified by repeated recrystallization. The cell parameters were calculated using single crystal X-ray diffraction technique which confirmed the crystal system. Optical behavior was examined by UV-Vis-NIR spectrometer in the range from 190 nm to 1100 nm, which revealed the absence of absorption in the entire visible region. Functional groups and modes of vibration were identified by FT-IR spectrometer in the range between 400 cm −1 and 4000 cm −1 . The 1 H-and 13 C NMR spectra of grown crystals were recorded using D 2 O as solvent on a Bruker 300 MHz (Ultrashield) TM instrument at 23˚C (300 MHz for 1 H NMR and 75 MHz for 13 C NMR) to confirm the molecular structure. The second harmonic generation conversion efficiency was investigated by Kurtz powder method using Nd: YAG laser as a source to explore the NLO characteristics.

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Crystal growth, optical bandgap, thermal, mechanical, dielectric studies on NLO active semiorganic 4-dimethylaminopyridine sodium chloride crystal for frequency conversion

Johnson¹,

Srineevasan²,

Sivavishnu³

2019

J Mater Sci: Mater Electron

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Crystal growth and comparative studies of XRD, spectral studies on new NLO crystals: l-Valine and l-valinium succinate

Cited by 31 publications

References 10 publications

Difficulties in the growth and characterization of non-linear optical materials: A case study of salts of amino acids

Difficulties in the growth and characterization of non-linear optical materials: A case study of salts of amino acids

Comparative Spectroscopic Studies on Pure, 10 and 50 mol% Glycine Mixed L-Valinium Picrate Crystals

Crystal growth, optical bandgap, thermal, mechanical, dielectric studies on NLO active semiorganic 4-dimethylaminopyridine sodium chloride crystal for frequency conversion

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