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Magnesium diboride information


Magnesium diboride
Ball-and-stick model of the part of the crystal structure of magnesium diboride
Identifiers
CAS Number
  • 12007-25-9 checkY
3D model (JSmol)
  • Interactive image
  • Interactive image
ChemSpider
  • 13118398 ☒N
ECHA InfoCard 100.031.352 Edit this at Wikidata
EC Number
  • 234-501-2
PubChem CID
  • 15987061
CompTox Dashboard (EPA)
  • DTXSID60893677 Edit this at Wikidata
InChI
  • InChI=1S/2B.Mg ☒N
    Key: PZKRHHZKOQZHIO-UHFFFAOYSA-N ☒N
SMILES
  • [B-]=[B-].[Mg+2]
  • [Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[B-]1=[B-][B-]2=[B-][B-]=[B-]3[B-]=[B-][B-]4=[B-][B-]=[B-]5[B-]=[B-][B-]6=[B-][B-]=[B-]1[B-]7=[B-]2[B-]3=[B-]4[B-]5=[B-]67.[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2]
Properties
Chemical formula
MgB2
Molar mass 45.93 g/mol
Density 2.57 g/cm3
Melting point 830 °C (1,530 °F; 1,100 K) (decomposes)
Structure
Crystal structure
Hexagonal, hP3
Space group
P6/mmm, No. 191
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Magnesium diboride is the inorganic compound with the formula MgB2. It is a dark gray, water-insoluble solid. The compound has attracted attention because it becomes superconducting at 39 K (−234 °C). In terms of its composition, MgB2 differs strikingly from most low-temperature superconductors, which feature mainly transition metals. Its superconducting mechanism is primarily described by BCS theory.

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Magnesium diboride

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Magnesium diboride is the inorganic compound with the formula MgB2. It is a dark gray, water-insoluble solid. The compound has attracted attention because...

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Diboride

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hafnium and boron Magnesium diboride, inexpensive and simple superconductor Rhenium diboride, synthetic superhard material Titanium diboride, extremely hard...

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Technological applications of superconductivity

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carrying 200 kA, citing lower volume and material demand as advantages. Magnesium diboride is a much cheaper superconductor than either BSCCO or YBCO in terms...

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Aluminium diboride

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atoms between them, and this is very similar to the structure of magnesium diboride. Single crystals of AlB2 exhibit metallic conductivity along the axis...

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Boron

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oxidation states. Illustrative is magnesium diboride (MgB2). Each boron atom has a formal −1 charge and magnesium is assigned a formal charge of +2....

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Rhenium diboride

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reaction, rhenium trichloride and magnesium diboride are mixed and heated in an inert atmosphere and the magnesium chloride byproduct is washed away....

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Titanium diboride

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thereof". Archived from the original on 2016-03-03. Retrieved 2008-07-02. Magnesium diboride Boride Diboride Titanium carbide Cermet Sintering Hot pressing...

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Rotating pocket heater

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Magnesium diboride (MgB2) is an ionic solid with superconducting properties. Vapor deposition is difficult, because the vapor pressure of magnesium is...

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Boron compounds

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oxidation states. Illustrative is magnesium diboride (MgB2). Each boron atom has a formal −1 charge and magnesium is assigned a formal charge of +2....

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Low valent magnesium compounds

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such as the ternary metal hydrides Mg2RuH4, Mg3RuH3, and Mg4IrH5 and magnesium diboride, Calculations had also indicated the stability of the Mg22+ cation...

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Hydrogen cryomagnetics

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superconductor suitable for hydrogen cryomagnetic use is magnesium diboride. Magnesium diboride is a conventional superconductor and it can be prepared...

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Conventional superconductor

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far achieved in a conventional superconductor was 39 K (-234 °C) in magnesium diboride. Ba0.6K0.4BiO3 is an unusual superconductor (a non-cuprate oxide)...

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Superconducting magnet

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are higher than Nb3Sn can manage.[citation needed] BSCCO, YBCO or magnesium diboride may also be used for current leads, conducting high currents from...

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History of radiation protection

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Superconducting Shield (SR2S) project, which was completed in December 2015, magnesium diboride was found to be a suitable material for generating a suitable force...

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BCS theory

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needed] indications to the importance of the Cooper-pairing principle. Magnesium diboride, considered a BCS superconductor Quasiparticle Little–Parks effect...

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Superconductivity

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niobium–titanium, germanium–niobium, and niobium nitride), ceramics (YBCO and magnesium diboride), superconducting pnictides (like fluorine-doped LaOFeAs) or organic...

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Americium

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tetraboride can be obtained by heating an oxide or halide of americium with magnesium diboride in vacuum or inert atmosphere. Analogous to uranocene, americium forms...

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Fault current limiter

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there were at least six national and international projects using magnesium diboride wire or YBCO tape, and two using BSCCO-2212 rods. Countries active...

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High Luminosity Large Hadron Collider

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accelerator requirements, superconducting power transmission lines made of magnesium diboride (MgB2) will be used to transmit the current of about 100,000 amperes...

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Oxidation state

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Scandium-Aluminium-Oxid-Carbiden" (in German). p. 139. B(−1) has been observed in magnesium diboride (MgB2), see Keeler, James; Wothers, Peter (2014). Chemical Structure...

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History of superconductivity

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theoretical condensed-matter physics. In March 2001, superconductivity of magnesium diboride (MgB 2) was found with Tc = 39 K. In 2008, the oxypnictide or iron-based...

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Cuprate superconductor

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Superconductor timeline. Cuprates are displayed as blue diamonds, magnesium diboride and other BCS superconductors are displayed as green circles, and...

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List of superconductors

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Zenitani, Y.; Akimitsu, J. (2001). "Superconductivity at 39 K in magnesium diboride". Nature. 410 (6824): 63–4. Bibcode:2001Natur.410...63N. doi:10.1038/35065039...

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Superconductor classification

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research. Iron-based superconductors, including the oxypnictides Magnesium diboride (MgB2), whose critical temperature is 39K, being the conventional...

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Xiaoxing Xi

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PMID 12618845, S2CID 5197642. Xi, X.X. (2008), "Two-band superconductor magnesium diboride", Reports on Progress in Physics, 71 (11): 116501, Bibcode:2008RPPh...

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Graphite intercalation compound

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advantage. Buckminsterfullerene intercalates Covalent superconductors Magnesium diboride, which uses hexagonal planar boron sheets instead of carbon Pyrolytic...

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