Zinkiodate - Schwingungsspektren (IR, Raman) und Kristallstruktur von Zn(IO3)2 · 2 H2O

Peter, S.; Pracht, G.; Lange, N.; Lutz, H. D.

doi:10.1002/(sici)1521-3749(200001)626:1<208::aid-zaac208>3.0.co;2-k

Cited by 29 publications

(21 citation statements)

References 6 publications

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“…Regarding the other bending vibrations, five ν 2 modes were detected in our experiments. The frequencies of three of them agree well with previous studies [6,7,16], with ours observed at 3-5 cm −1 higher frequencies due to the higher pressure (0.9 GPa) in the sample. The brilliance and resolution of the experimental set-up enabled the identification of two modes that were previously undetected.…”

Section: Resultssupporting

confidence: 92%

“…In our experiments, we detected four ν 4 modes. The frequencies of the modes we found at 425, 440, and 452 cm −1 are less than 9 cm −1 larger than those measured in previous ambient-pressure Raman and IR experiments [6,7,16]. This is consistent with the fact that our experiment was performed at a pressure of 0.9 GPa.…”

Section: Resultssupporting

confidence: 91%

“…Additionally, the mode previously reported at 524 cm −1 in Ref. [8] is not consistent either with the present or previous experiments [5][6][7]16]. Indeed, there are no phonons in Zn(IO 3 ) 2 , or in any divalent metal iodate [7], in the 600−500 cm −1 range.…”

Section: Resultscontrasting

confidence: 89%

“…In the present work, IR spectroscopy provides information on the vibrational properties of Zn(IO 3 ) 2 , which, until the present work, have remained relatively underexplored. In fact, less than one-third of the 51 phonons predicted by group theory analysis have been reported experimentally for Zn(IO 3 ) 2 [5][6][7][8][9]16]. Therefore, the present far-infrared spectroscopy study of Zn(IO 3 ) 2 under high-pressure conditions makes a timely and valuable contribution.…”

Section: Metal Iodates [M(io 3 )mentioning

confidence: 89%

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High-Pressure Spectroscopy Study of Zn(IO3)2 Using Far-Infrared Synchrotron Radiation

et al. 2020

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We report the first high-pressure spectroscopy study on Zn(IO3)2 using synchrotron far-infrared radiation. Spectroscopy was conducted up to pressures of 17 GPa at room temperature. Twenty-five phonons were identified below 600 cm−1 for the initial monoclinic low-pressure polymorph of Zn(IO3)2. The pressure response of the modes with wavenumbers above 150 cm−1 has been characterized, with modes exhibiting non-linear responses and frequency discontinuities that have been proposed to be related to the existence of phase transitions. Analysis of the high-pressure spectra acquired on compression indicates that Zn(IO3)2 undergoes subtle phase transitions around 3 and 8 GPa, followed by a more drastic transition around 13 GPa.

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Section: Resultssupporting

confidence: 92%

Section: Resultssupporting

confidence: 91%

Section: Resultscontrasting

confidence: 89%

Section: Metal Iodates [M(io 3 )mentioning

confidence: 89%

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High-Pressure Spectroscopy Study of Zn(IO3)2 Using Far-Infrared Synchrotron Radiation

et al. 2020

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“…It is generally accepted that the important electro and nonlinear optical properties of metal iodates originate from the lone electron pair of iodine in the IO 3 − iodate anion [13]. A lot of efforts have thus been dedicated to the synthesis of compounds containing this anion [14][15][16][17][18][19]. Iodates which combine two types of cations also constitute a particularly interesting group.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Crystal Structure Determination of a New Lithium Zinc Iodate Polymorph LiZn(IO3)3

et al. 2019

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Synthesis and characterization of anhydrous LiZn(IO3)3 powders prepared from an aqueous solution are reported. Morphological and compositional analyses were carried out by using scanning electron microscopy and energy-dispersive X-ray measurements. The synthesized powders exhibited a needle-like morphology after annealing at 400 °C. A crystal structure for the synthesized compound was proposed from powder X-ray diffraction and density-functional theory calculations. Rietveld refinements led to a monoclinic structure, which can be described with space group P21, number 4, and unit-cell parameters a = 21.874(9) Å, b = 5.171(2) Å, c = 5.433(2) Å, and  = 120.93(4)°. Density-functional theory calculations supported the same crystal structure. Infrared spectra were also collected, and the vibrations associated with the different modes were discussed. The non-centrosymmetric space group determined for this new polymorph of LiZn(IO3)3, the characteristics of its infrared absorption spectrum, and the observed second-harmonic generation suggest it is a promising infrared non-linear optical material.

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An Effective Strategy for Designing Nonlinear Optical Crystals by Combining the Structure‐Directing Property of Oxyfluorides with Chemical Substitution

Hou

et al. 2021

Angewandte Chemie

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Rationally designing a high‐performance nonlinear optical (NLO) crystal remains a great ongoing challenge. It involves not only the design of noncentrosymmetric structures but also property optimization. In this communication, a new strategy for effectively designing the NLO crystal has been put forward, that is, using the structure‐directing property of oxyfluoride anions to obtain a noncentrosymmetric and polar structure, and then by substitution of IO3− for isovalent F− anions to further enhance the SHG response. With this strategy, a new iodate fluoride, Ba2[MoO3F(IO3)](MoO3F2) has been successfully designed from the Ba2(MoO3F2)F2 with the cis‐directing [MoO4F2]4− groups. It exhibits a large SHG response (≈8×KDP), a wide transparent region (0.30–10.92 μm), a high laser‐induced damage threshold (LDT) (88.53 MW cm−2), and a large birefringence (≈0.264@532 nm). These indicate Ba2[MoO3F(IO3)](MoO3F2) would be a promising NLO crystal.

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Zinkiodate - Schwingungsspektren (IR, Raman) und Kristallstruktur von Zn(IO3)2 · 2 H2O

Cited by 29 publications

References 6 publications

High-Pressure Spectroscopy Study of Zn(IO3)2 Using Far-Infrared Synchrotron Radiation

High-Pressure Spectroscopy Study of Zn(IO3)2 Using Far-Infrared Synchrotron Radiation

Synthesis, Characterization, and Crystal Structure Determination of a New Lithium Zinc Iodate Polymorph LiZn(IO3)3

An Effective Strategy for Designing Nonlinear Optical Crystals by Combining the Structure‐Directing Property of Oxyfluorides with Chemical Substitution

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