Spectral Properties of Alpha-Cu2(OH/D)3Br at Room Temperature

The newly identified magnetic geometric frustration material-botallackite-structure deuteroxyl copper bromide α-Cu2(OD)3Br sample was successfully synthesized in the same single phase (polycrystalline) as the H-isotope substituted sample of α-Cu2(OH)3Br, and its IR (4000-400 cm–1) absorption and Raman (4000-95 cm–1) spectra at room temperature are first, to the best of our knowledge, measured to study the corresponding relationship between these iso-structural compounds. Through the comparative analysis with those of α-Cu2(OH)3Br reported previously, we definitely assign or tentatively suggest their vibration modes according to the result of the factor group analysis.

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Mid-IR and Raman Spectral Properties of Clinoatacamite-Structure Basic Copper Chlorides

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.146-147.1202 ◽

2010 ◽

Vol 146-147 ◽

pp. 1202-1205 ◽

Cited By ~ 3

Author(s):

Xiao Dong Liu ◽

Dong Dong Meng ◽

Xu Guang Zheng ◽

Masato Hagihala ◽

Qi Xin Guo

Keyword(s):

Spectral Properties ◽

Single Phase ◽

Copper Chloride ◽

Polycrystalline Sample ◽

Vibration Modes ◽

Mid Infrared ◽

Geometric Frustration ◽

Raman Spectral ◽

Ir And Raman ◽

Copper Chlorides

Basic copper chloride Cu2(OH)3Cl and Cu2(OD)3Cl polycrystalline sample were successfully synthesized in the same single phase of clinoatacamite-structure, and the latter’s mid-infrared absorption spectra (4000-400cm–1) and Raman spectra (4000-95cm–1) were first, to the best of our knowledge, measured respectively by FTIR spectroscopy and Micro-Raman spectroscopy to study the corresponding relationship between their spectral properties and crystal structure. Through the comparative analysis of the four spectra we definitely assign or tentatively suggest the vibration modes of OH/D groups in the trimeric hydrogen bond environment, (H/DO)–Cu–(OH/D), Cl–Cu–Cl. These results can be propitious to their low temperature spectral properties which must help to understand the underlying physics of their exotic geometric frustration phenomenon.

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Mid-IR and Raman Spectral Properties of Hydroxyl/Deuteroxyl Cobalt Chlorides

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.146-147.1194 ◽

2010 ◽

Vol 146-147 ◽

pp. 1194-1197 ◽

Cited By ~ 1

Author(s):

Xiao Dong Liu ◽

Dong Dong Meng ◽

Xu Guang Zheng ◽

Masato Hagihala ◽

Qi Xin Guo

Keyword(s):

Spectral Properties ◽

Single Phase ◽

Vibration Modes ◽

Mid Infrared ◽

Geometrically Frustrated ◽

Micro Raman Spectroscopy ◽

Geometric Frustration ◽

Infrared Absorption Spectra ◽

Raman Spectral ◽

Ir And Raman

The geometrically frustrated material-deuteroxyl cobalt chlorides Co2(OD)3Cl sample was first, to the best of our knowledge, successfully synthesized in the same single phase as the famous Co2(OH)3Cl, and their mid-infrared absorption spectra (4000-400cm–1) and Raman spectra (4000-95 cm–1) are first, to the best of our knowledge, measured respectively by FTIR spectroscopy and Micro-Raman spectroscopy to study the corresponding relationship between their spectral properties and crystal structure. Through the comparative analysis of the four spectra we definitely assign or tentatively suggest the vibration modes of hydroxyl/deuteroxyl groups in the trimeric hydrogen bond environment, (OH/D)–Co–(OH/D), and (H/D3···Cl)–Co–(Cl···H/D3). These results can be propitious to the low temperature spectral properties of Co2(OH)3Cl and Co2(OD)3Cl which must help to understand the underlying physics of their exotic geometric frustration phenomenon.

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Factor Group Analysis for Some Molecules of Interest in Planetary Atmospheres

Applied Spectroscopy ◽

10.1366/000370275774455905 ◽

1975 ◽

Vol 29 (4) ◽

pp. 354-355 ◽

Cited By ~ 1

Author(s):

John R. Ferraro

Keyword(s):

Group Analysis ◽

Planetary Atmospheres ◽

Factor Group ◽

Factor Group Analysis

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Raman study of the structural properties of KNO3(II)

Canadian Journal of Chemistry ◽

10.1139/v77-172 ◽

1977 ◽

Vol 55 (7) ◽

pp. 1242-1250 ◽

Cited By ~ 32

Author(s):

M. H. Brooker

Keyword(s):

Single Crystals ◽

Structural Properties ◽

Raman Spectra ◽

Excellent Agreement ◽

Room Temperature ◽

Group Analysis ◽

Factor Group ◽

Spectral Features ◽

Space Group ◽

Raman Study

Raman spectra of oriented single crystals of KNO3(II) have been recorded at 298 and 77 K. At both temperatures the data are in excellent agreement with the factor group analysis based on the generally accepted Pmcn space group. Additional spectral features observed near room temperature suggest the presence of a significant number of disordered nitrate groups on alternate lattice sites, although the majority of nitrate groups occupy the ordered sites. As the temperature is lowered, the disordered groups freeze out until near the temperature of reported electrical anomalies (213 K) only the ordered sites are occupied. Improved resolution has resulted in detection of a number of new spectral features while improved depolarization data have resulted in reassignment of several peaks.

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