Raman spectrum and normal coordinate analysis of pentaborate ion (B5O10) in potassium pentaborate tetrahydrate

Devarajan, V.; Gräfe, E.; Funck, E.

doi:10.1016/0584-8539(76)80314-5

Cited by 11 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8). Intensity of these bands are greater in Infrared than in Raman spectra [50]. This region could be also covered by the contribution from Eu 3+ 5 However, this suggestion needs additional study.…”

Section: Resultsmentioning

confidence: 87%

“…An asymmetric stretching of BO4 should be observed in Raman spectra in the range of 1000-1150 cm -1 , however, intensity of these bands are very weak [50], in the case of Infrared spectra these vibrations are clearly observed at 975-1100 cm -1 . Raman bands in the region of 725-800 cm -1 are symmetric stretching of BO4 and strong line at 756 cm -1 can be used as an indicator of the pentaborate group presence [52].…”

Section: Resultsmentioning

confidence: 88%

“…In Fig. 7, for comparison, the Raman frequencies of pentaborate ion in potassium pentaborate tetrahydrate single crystal are shown by black vertical lines [50].…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Structural and spectroscopic properties of new noncentrosymmetric self-activated borate Rb3EuB6O12 with B5O10 units

et al. 2018

View full text Add to dashboard Cite

New noncentrosymmetric double borate Rb3EuB6O12 was synthesized by solid state reaction method, and their crystallographic parameters were obtained by Rietveld analysis. This borate crystallizes in the trigonal space group R32 with cell parameters of a = 13.4604(2) Å, c = 30.7981(5) Å, Z = 15. Their structure features a three-dimensional framework composed of [B5O10] 5groups that are bridged by Eu-O polyhedra. The existence of B5O10 group in the structure was confirmed by vibrational spectroscopy. Rb3EuB6O12 melts incongruently at 1101 K. The second harmonic generation effect of Rb3EuB6O12 is 16 times higher than that of α-quartz standard. In the luminescence spectrum, the domination of a single prominent narrow line from hypersensitive 5 D0-7 F2 manifold of Eu 3+ ions is observed, while 5 D0-7 F1 manifold and ultranarrow 5 D0-7 F0 line are of comparable peak intensity. These features are explained by specific local symmetry of Eu ion within the crystal structure of Rb3EuB6O12..

show abstract

Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 88%

See 1 more Smart Citation

Structural and spectroscopic properties of new noncentrosymmetric self-activated borate Rb3EuB6O12 with B5O10 units

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The observed main frequencies (in cm -1 ) of Raman spectra of the synthetic Cs-PBT and Rb-PBT and natural ramanite-(Cs) and ramanite-(Rb) are compared in the Table 3. The assignment of the main Raman bands are from Devarajan et al (1976), Janda andHeller (1980), li et al (1995), and this work.…”

Section: Reference Samplesmentioning

confidence: 89%

“…The Raman main frequencies of the alkali pentaborates hydrates are compiled according to Devarajan et al (1976), Janda andHeller (1980), li et al (1995), and this work in Table 3. The observed main frequencies (in cm -1 ) of Raman spectra of the synthetic Cs-PBT and Rb-PBT and natural ramanite-(Cs) and ramanite-(Rb) are compared in the Table 3.…”

Section: Reference Samplesmentioning

confidence: 99%

Ramanite-(Cs) and ramanite-(Rb): New cesium and rubidium pentaborate tetrahydrate minerals identified with Raman spectroscopy

Thomas

Davidson

Hahn

2008

American Mineralogist

View full text Add to dashboard Cite

This study of melt and fluid inclusions in graphic pegmatite quartz from the Island of Elba, Italy has identified silicate melts and coexisting aqueous fluid from the final stage of pegmatite formation, which contain extremely high concentrations of boron (up to 19.8 mass% B 2 O 3 ), cesium (>5 mass% Cs 2 O), and rubidium (>0.5 mass% Rb 2 O). Several boron-bearing minerals have been identified in melt and fluid inclusions, including sassolite (H 3 BO 3 ) and santite (KB 5 O 8 ·4H 2 O). In addition, we have found two new minerals observed as daughter mineral phases, and these have been accepted by the IMA, Commission on New Minerals, Nomenclature and Classification (CNMNC) as ramanite-(Cs) (2007-007), monoclinic β-cesium pentaborate tetrahydrate (CsB 5 O 8 ·4H 2 O) with space group C2/c, and ramanite-(Rb) (2007-006), orthorhombic rubidium pentaborate tetrahydrate (RbB 5 O 8 ·4H 2 O) with space group Aba2.At the moment, given sample constraints, we cannot directly determine some of the properties traditionally reported for new minerals; however, both phases have Raman spectra identical to spectra obtained on synthetic Cs and Rb pentaborates, which were studied for comparison. Although difficult to recognize optically, ramanite-(Cs) and ramanite-(Rb) have distinctive Raman spectra allowing simple and definitive identification from other translucent phases found in many hypersaline fluid inclusions. Although currently only identified from a limited number of occurrences, given the availability of a definitive means of identification, we suspect that ramanite-(Rb) and ramanite-(Cs) may in fact be common, at least in boron-rich pegmatites.

show abstract

Stimulated Raman Scattering in a Potassium Pentaborate Crystal

Petrosyan

Pokhsraryan

1985

Physica Status Solidi (b)

View full text Add to dashboard Cite

Raman spectrum and normal coordinate analysis of pentaborate ion (B5O10) in potassium pentaborate tetrahydrate

Cited by 11 publications

References 8 publications

Structural and spectroscopic properties of new noncentrosymmetric self-activated borate Rb3EuB6O12 with B5O10 units

Structural and spectroscopic properties of new noncentrosymmetric self-activated borate Rb3EuB6O12 with B5O10 units

Ramanite-(Cs) and ramanite-(Rb): New cesium and rubidium pentaborate tetrahydrate minerals identified with Raman spectroscopy

Stimulated Raman Scattering in a Potassium Pentaborate Crystal

Contact Info

Product

Resources

About