l-Nitroargininium picrate

Apreyan, R.A.; Fleck, Michel; Atanesyan, A.K.; Sukiasyan, R.P.; Petrosyan, A.M.

doi:10.1016/j.molstruc.2015.08.035

Cited by 9 publications

(6 citation statements)

References 20 publications

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“…Second harmonic generation was examined by direct observation on the crystal using a pulsed YAG:Nd laser with passive Q-switching (duration of pulses 20ns, repetition rate 5Hz) [10].…”

Section: Experimental Partmentioning

confidence: 99%

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Single Crystals of α–LiIO3 Doped with L–arginine and L–nitroarginine

Danghyan

2022

A. J. P.

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One of the essential crystals for technology is the hexagonal modification of lithium iodate (α–LiIO3), which is endowed with nonlinear optical, pyroelectric, piezoelectric, acousto–optic properties. In recent years, a number of research groups studied physical and physiochemical properties of several single crystals (KDP, ADP, BTCA, ZTC) that were grown in the presence of various amino acids (L–alanine, L–glycine, L–arginine, L–lysine, etc.). In all these studies a positive effect on growth process and crystal quality is described for the amino acids being used as dopants in solutions. Based on the promising results of existing studies, in this work the effect of mixtures of the amino acids L–arginine and L–nitroarginine on α–LiIO3 single crystals is presented. Studies of IR spectrum, UV–Vis transmittance, thermal properties and nonlinear optical activity have shown that the optical quality and physicochemical properties of the crystal were improved in the presence of amino acid dopands. Our data indicates that second harmonic generation activity of the crystals of α–LiIO3 grown with L–arginine and L–nitroarginine dopants is 1.2 times higher than that of pure α–LiIO3.

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“…Second harmonic generation was examined by direct observation on the crystal using a pulsed YAG:Nd laser with passive Q-switching (duration of pulses 20ns, repetition rate 5Hz) [10].…”

Section: Experimental Partmentioning

confidence: 99%

“…Nonlinear optical activity was measured by the modified method of a powder [10] on installation using as a source of radiation pulse YAG:Nd the laser with passive modulation of good quality (duration of impulses of 20 ns, frequency of recurrence of 5Hz).…”

Section: Nonlinear Optical Propertiesmentioning

confidence: 99%

Single Crystals of α–LiIO3 Doped with L–arginine and L–nitroarginine

Danghyan

2022

A. J. P.

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“…The efficiency of the second harmonic generation of L-arginine halide crystals was measured by the modified method of powder on installation using as a source of radiation pulse Nd: YAG laser with passive modulation of good quality (duration of impulses of 20ns, frequency of recurrence of 5Hz) [20]. The results of the measurements are compared with KDP and presented in table 3.…”

Section: Nonlinear Optical Propertiesmentioning

confidence: 99%

Study and characterization of L–arginine halides (HCl/HBr)

Sukiasyan,

Danghyan,

Apreyan

et al. 2023

J. Phys.: Conf. Ser.

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The systems of L-arginine with halogen acids (hydrochloric and hydrobromic) in water solvent under the influence of acoustic waves and without them were investigated in this study. Nine compounds were obtained and identified: (I) L-arginine hydrobromide, (II) L-arginine hydrochloride (space group P1), (III) L-arginine hydrobromide, (IV) L-arginine hydrochloride (sp. gr. P21), (V) L-arginine hydrobromide monohydrate (sp. gr. P21), (VI) L-arginine hydrochloride monohydrate (sp. gr. P21), (VII) L-arginine dihydrobromide monohydrate (sp. gr. P1), (VIII) L-arginine dihydrochloride monohydrate (sp. gr. P212121) and (IX) L-arginine dihydrochloride (sp. gr. P21), of which (I), (III) and (IX) crystals were obtained and studied for the first time. The conditions for the formation of all the compounds were described. The FT-IR ATR spectra of obtained crystals were presented and compared. Based on the IR spectra, it can be assumed that the crystals of (II) and (I) are isostructural, the same for (IV) and (III). The crystal and molecular structure of L-arginine dihydrochloride (sp. gr. P21) was studied by X-ray diffraction method. Thermal and other properties were investigated. The efficiency of the second harmonic generation of all the crystals was measured and compared with that of the KDP.

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“…The crystal structure of this intermediate is benefit to understand the reaction mechanism. Two related structures were found in the CSD: One is Nη-nitro-Larginine methyl ester hydrochloride, and the other is Lnitroargininium picrate [8,9].…”

Section: Commentmentioning

confidence: 99%