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| BoilingPt = |
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| Solubility = insoluble |
| Solubility = insoluble |
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| SolubleOther = soluble in hot [[nitric acid]] (decomposes),<ref>{{cite book|isbn=9783540443766|title=Springer Handbook of Condensed Matter and Materials Data|year=2005|editor1=Martienssen, Werner|editor2=Warlimont, Hans|publisher=Springer-Verlag}}</ref><br>soluble in [[nitric acid]] (decomposes),<ref name=r1>Rebekoff Reeve, Martin (1991) [http://www.google.com/patents/EP0130016B1?cl=en Method of producing an aluminium boride]. EP 0130016 B1</ref><br>soluble in [[sulfuric acid]] (decomposes)<ref name=r1/> |
| SolubleOther = soluble in hot [[nitric acid]] (decomposes),<ref>{{cite book|isbn=9783540443766|title=Springer Handbook of Condensed Matter and Materials Data|journal=Springer Handbook of Condensed Matter and Materials Data|pages=1025|year=2005|editor1=Martienssen, Werner|editor2=Warlimont, Hans|publisher=Springer-Verlag|bibcode=2005shcm.book.....M|last1=Martienssen|first1=Werner|last2=Warlimont|first2=Hans}}</ref><br>soluble in [[nitric acid]] (decomposes),<ref name=r1>Rebekoff Reeve, Martin (1991) [http://www.google.com/patents/EP0130016B1?cl=en Method of producing an aluminium boride]. EP 0130016 B1</ref><br>soluble in [[sulfuric acid]] (decomposes)<ref name=r1/> |
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==Properties== |
==Properties== |
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There are two crystalline forms, α-AlB<sub>12</sub>, and γ-AlB<sub>12</sub>. Both forms are very similar and consist of a framework with three-dimensional networks of B<sub>12</sub> and B<sub>20</sub> units.<ref>{{cite journal|title=Crystal chemistry of α-AlB<sub>12</sub> and γ-AlB<sub>12</sub>|journal=Journal of |
There are two crystalline forms, α-AlB<sub>12</sub>, and γ-AlB<sub>12</sub>. Both forms are very similar and consist of a framework with three-dimensional networks of B<sub>12</sub> and B<sub>20</sub> units.<ref>{{cite journal|title=Crystal chemistry of α-AlB<sub>12</sub> and γ-AlB<sub>12</sub>|journal=Journal of Solid State Chemistry |volume=154 |issue=1 |pages=168–176 |year= 2000|doi=10.1006/jssc.2000.8831|last1=Higashi |first1=Iwami |bibcode=2000JSSCh.154..168H }}</ref> The phase β-AlB<sub>12</sub> is now believed to be the ternary boride C<sub>2</sub>Al<sub>3</sub>B<sub>48</sub>.<ref>{{cite journal|title=Phases and twinning in C<sub>2</sub>Al<sub>3</sub>B<sub>48</sub> (β-AlB<sub>12</sub>)|journal=Zeitschrift für Kristallographie|volume=122|issue=1–2|pages=108|doi=10.1524/zkri.1965.122.1-2.108|bibcode=1965ZK....122..108M|year=1965|last1=Matkovich|first1=V. I|last2=Giese|first2=R. F|last3=Economy|first3=J}}</ref> |
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==Preparation== |
==Preparation== |
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Revision as of 03:05, 16 November 2018
| Names | |
|---|---|
| IUPAC name
Aluminium dodecaboride
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| Other names
Aluminium boride
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| Identifiers | |
3D model (JSmol)
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| ECHA InfoCard | 100.031.737 |
| EC Number |
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PubChem CID
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| Properties | |
| AlB12 | |
| Molar mass | 156.714 g/mol[1] |
| Appearance | Yellow to black solid[1] |
| Density | 2.55 g/cm3[1] |
| Melting point | 2,070 °C (3,760 °F; 2,340 K)=[1] |
| insoluble | |
| Solubility | soluble in hot nitric acid (decomposes),[2] soluble in nitric acid (decomposes),[3] soluble in sulfuric acid (decomposes)[3] |
| Structure | |
| Tetragonal (α-form) Orthorhombic (β-form) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Aluminium dodecaboride (AlB12) is a chemical compound made from the metal aluminium and the non-metal boron. It is one of two chemical compounds that are commonly called aluminium boride; the other is aluminium diboride, AlB2.
Properties
There are two crystalline forms, α-AlB12, and γ-AlB12. Both forms are very similar and consist of a framework with three-dimensional networks of B12 and B20 units.[4] The phase β-AlB12 is now believed to be the ternary boride C2Al3B48.[5]
Preparation
The β-form can be prepared by the reaction of boron(III) oxide with sulfur and aluminum, then adding carbon to the mixture.
Uses
AlB12 is used as a grinding compound to replace diamond or corundum.
See also
Footnotes
- ^ a b c d Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.45. ISBN 1-4398-5511-0.
- ^ Martienssen, Werner; Warlimont, Hans (2005). Martienssen, Werner; Warlimont, Hans (eds.). Springer Handbook of Condensed Matter and Materials Data. Springer-Verlag. p. 1025. Bibcode:2005shcm.book.....M. ISBN 9783540443766.
{{cite book}}:|journal=ignored (help) - ^ a b Rebekoff Reeve, Martin (1991) Method of producing an aluminium boride. EP 0130016 B1
- ^ Higashi, Iwami (2000). "Crystal chemistry of α-AlB12 and γ-AlB12". Journal of Solid State Chemistry. 154 (1): 168–176. Bibcode:2000JSSCh.154..168H. doi:10.1006/jssc.2000.8831.
- ^ Matkovich, V. I; Giese, R. F; Economy, J (1965). "Phases and twinning in C2Al3B48 (β-AlB12)". Zeitschrift für Kristallographie. 122 (1–2): 108. Bibcode:1965ZK....122..108M. doi:10.1524/zkri.1965.122.1-2.108.