Synthesis, growth and characterization of semi-organic nonlinear optical bis thiourea antimony tri bromide (BTAB) single crystals

Karthick, N.; Sankar, R.; Jayavel, R.; Pandi, S.

doi:10.1016/j.jcrysgro.2009.09.054

Cited by 27 publications

(5 citation statements)

References 21 publications

(17 reference statements)

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“…SbBr 3 (CH 4 N 2 S) 2 ÁH 2 O, that crystallizes in the space group Cmc2 1 (Shettigar et al, 2004). Its SHG activity has been known before and after this report (Bhat & Dharmaprakash, 1997;Karthick et al, 2009;Rajagopalan & Krishnamoorthy, 2016). A PLATON (Spek, 2020) check on the CIF shows that the space group is only nearly centrosymmetric.…”

Section: Discussionmentioning

confidence: 84%

SHG in a centrosymmetric crystal – can it be possible?

Tou¹,

Ng²

2021

Acta Crystallogr C

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The present report lists selected publications on centrosymmetric compounds that manifest second harmonic generation responses in a laser, along with a few publications that dispute the laser outcomes. Two studies provide a plausible explanation for this apparent contradiction between second-order nonlinear susceptibility and inversion symmetry: the crystals are noncentrosymmetric and are twinned by inversion. If crystal structures of SHG-active compounds are presented in centrosymmetric settings, the authors of the publications may consider stipulating that the true space group is likely to be one of the noncentrosymmetric sub-space groups.

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Section: Discussionmentioning

confidence: 84%

SHG in a centrosymmetric crystal – can it be possible?

Tou¹,

Ng²

2021

Acta Crystallogr C

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“…Inspired by pioneering works and correlation theory of inorganic and organic NLO crystals, , we report the design and construction of an acentric organic–inorganic hybrid metal–organic crystal with a strong second-order NLO response. First, the d 10 metal cation Cd 2+ was selected as the central metal ion, which can readily combine with organic ligands by the electron motion of ligand-to-metal charge transfer (LMCT); this, together with the d 10 electronic configuration of Cd 2+ oriented toward the present dissymmetric coordination with high torsion, contributes to the construction of noncentrosymmetric crystals, benefiting from the second-order Jahn–Teller (SOJT) effect . Next, morpholine was selected as an organic ligand, which contains O with a lone pair of electrons acting as donors that are capable of combining with metal Cd 2+ by metal–ligand bonding, which is supposed to exhibit strong molecular susceptibility due to electron movement from organic ligands to inorganic metals .…”

Section: Introductionmentioning

confidence: 99%

Organic–Inorganic Hybrid Noncentrosymmetric (Morpholinium)₂Cd₂Cl₆ Single Crystals: Synthesis, Nonlinear Optical Properties, and Stability

Dang

Zhang

2022

Inorg. Chem.

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To design nonlinear optical (NLO) materials, we focused on combinations of d10 metal cation (Cd2+)-based chloride and morpholine molecules to form organic–inorganic hybrids. The O of morpholine containing lone-pair electrons can be integrated with Cd2+ by a ligand-to-metal charge transfer (LMCT) strategy to build acentric structures benefiting from the second-order Jahn–Teller effect. Introduction of the high-electronegativity chlorine can make polyhedrons of acentric crystals more distorted and conducive to a strong second harmonic generation (SHG) response. Therefore, (Morpholinium)2Cd2Cl6 crystals were constructed and synthesized by a solvent evaporation method. (Morpholinium)2Cd2Cl6 belongs to the orthorhombic P212121 space group and shows a one-dimensional (1D) structure with distorted [CdCl6] and [CdCl4O2] octahedrons. The short cutoff edge of (Morpholinium)2Cd2Cl6 was determined to be about 230 nm. The SHG response of (Morpholinium)2Cd2Cl6 exhibited an intensity of approximately 0.73 × KDP as estimated by the powder second harmonic generation technique. Furthermore, related theoretical calculations were performed to study the relationship of the band structure, refractive anisotropy, electronic state, and nonlinear optical response. Besides, (Morpholinium)2Cd2Cl6 showed relatively good thermal stability. This work can serve as a guide for the design and synthesis of new large NLO hybrid crystals with d10 transition metals.

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“…Obviously, the semi-organic crystals exhibit the properties of both crystals. These hybrid compounds show potential applications in linear and nonlinear optics [7][8][9][10]. Attempts have been made by several researchers, to synthesize and grow semiorganic crystals which may exhibit the properties of both organic and inorganic crystals.…”

Section: Introductionmentioning

confidence: 99%

Spectral and optical characterization of the new semi-organic crystal: 4-methylbenzylammonium chloride hemihydrate, to establish protonation and the effect of resultant hydrogen bonding

Aarthi¹,

Raja²

2019

Bull Mater Sci

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4-Methylbenzylammonium chloride hemihydrate (4MLBACH) single crystals were obtained by slowly evaporating the solvent. The characterization of the title crystal was first carried out and reported in this article. The crystal system and space group of the title crystal are identified as monoclinic and C2/c, respectively. The lattice parameter values were also calculated. Using Fourier transform infrared spectroscopy the protonation of 4-methylbenzylamine by hydrochloric acid and the formation of the crystal 4MLBACH were confirmed. The transmission window of the grown crystal is between 261 and 1100 nm. The protonation of the amine group is confirmed by nuclear magnetic resonance spectral analysis. Z-Scan analysis was carried out to determine the nonlinear optical parameters. It reveals that the nonlinear susceptibility (χ 3) value is greater than some reported crystals. The title crystal exhibits saturable absorption and self-defocussing effects.

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Synthesis, growth and characterization of semi-organic nonlinear optical bis thiourea antimony tri bromide (BTAB) single crystals

Cited by 27 publications

References 21 publications

SHG in a centrosymmetric crystal – can it be possible?

SHG in a centrosymmetric crystal – can it be possible?

Organic–Inorganic Hybrid Noncentrosymmetric (Morpholinium)₂Cd₂Cl₆ Single Crystals: Synthesis, Nonlinear Optical Properties, and Stability

Spectral and optical characterization of the new semi-organic crystal: 4-methylbenzylammonium chloride hemihydrate, to establish protonation and the effect of resultant hydrogen bonding

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Synthesis, growth and characterization of semi-organic nonlinear optical bis thiourea antimony tri bromide (BTAB) single crystals

Cited by 27 publications

References 21 publications

SHG in a centrosymmetric crystal – can it be possible?

SHG in a centrosymmetric crystal – can it be possible?

Organic–Inorganic Hybrid Noncentrosymmetric (Morpholinium)2Cd2Cl6 Single Crystals: Synthesis, Nonlinear Optical Properties, and Stability

Spectral and optical characterization of the new semi-organic crystal: 4-methylbenzylammonium chloride hemihydrate, to establish protonation and the effect of resultant hydrogen bonding

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Product

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About

Organic–Inorganic Hybrid Noncentrosymmetric (Morpholinium)₂Cd₂Cl₆ Single Crystals: Synthesis, Nonlinear Optical Properties, and Stability