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Bismuth silicon oxide

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Bismuth silicon oxide

Bi12SiO20 crystal

Bi12SiO20 crystal structure
Names
Other names sillénite
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.032.369 Edit this at Wikidata
EC Number
  • 235-620-2
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/12Bi.O4Si.16O/c;;;;;;;;;;;;1-5(2,3)4;;;;;;;;;;;;;;;;/q12*+3;-4;16*-2Key: JLXRQKOSFUIFEC-UHFFFAOYSA-N
SMILES
  • ................ ()()............
Properties
Chemical formula Bi12SiO20
Molar mass 2855.82
Odor odorless
Density 9.20 g/cm
Melting point 800 °C
Solubility in water insoluble
Structure
Crystal structure Body-centered cubic, cI66
Space group I23, No. 197
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

Bismuth silicon oxide is a solid inorganic compound of bismuth, silicon and oxygen. Its most common chemical formula is Bi12SiO20, though other compositions are also known. It occurs naturally as the mineral sillénite and can be produced synthetically, by heating a mixture of bismuth and silicon oxides. Centimeter-sized single crystals of Bi12SiO20 can be grown by the Czochralski process from the molten phase. They exhibit piezoelectric, electro-optic, elasto-optic, photorefractive and photoconductive properties, and therefore have potential applications in spatial light modulators, acoustic delay lines and hologram recording equipment. Bi12SiO20 can be obtained as a whitish powder with band gap of approximately 3.2 eV starting from bismuth subcarbonate and silica in presence of ethyleneglycol. Si solid-state NMR is used to proof that the Si(IV) cations are sharing oxygen atoms with the Bi(III) cations. The Si chemical shift (δ) in Bi12SiO20 is −78.1 ppm. Unlike the bismuth oxide, the presence of the acidic Si(IV) cations avoid the reactivity with CO2.

Another bismuth silicate has formula Bi2O9Si3.

References

  1. ^ Shen, Chuanying; Zhang, Huaijin; Zhang, Yuanyuan; Xu, Honghao; Yu, Haohai; Wang, Jiyang; Zhang, Shujun (2014). "Orientation and Temperature Dependence of Piezoelectric Properties for Sillenite-Type Bi12TiO20 and Bi12SiO20 Single Crystals". Crystals. 4 (2): 141. doi:10.3390/cryst4020141.
  2. ^ Yeh, T. S.; Hu, L. J.; Tu, S. L.; Yang, S. J.; Hsu, S. E.; Hsu, Ken (1993). "Growth and characterization of Bi12(Si1−xTix)O20 mixed crystals". Journal of Applied Physics. 73 (11): 7872. Bibcode:1993JAP....73.7872Y. doi:10.1063/1.353938.
  3. Riscob, B.; Shkir, Mohd.; Ganesh, V.; Vijayan, N.; Maurya, K.K.; Kishan Rao, K.; Bhagavannarayana, G. (2014). "Synthesis, crystal growth and mechanical properties of Bismuth Silicon Oxide (BSO) single crystal". Journal of Alloys and Compounds. 588: 242–247. doi:10.1016/j.jallcom.2013.11.038.
  4. "Photorefractive crystals | 4Lasers".
  5. Ortiz-Quiñonez JL, Zumeta-Dubé I, Díaz D, Nava-Etzana N, Cruz-Zaragoza E (2017). "Bismuth Oxide Nanoparticles Partially Substituted with Eu, Mn, and Si: Structural, Spectroscopic, and Optical Findings". Inorg. Chem. 56 (6): 3394–3403. doi:10.1021/acs.inorgchem.6b02923. PMID 28252972. S2CID 3346966.
  6. "bismuth silicate". pubchem.ncbi.nlm.nih.gov.


Bismuth compounds
Bismuth(III)
Organobismuth(III)
Bismuth(V)
Organobismuth(V)
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