Pentacopper silicide

General
Surname	Pentacopper silicide
other names	Copper silicide (ambiguous)
Ratio formula	Cu 5 Si
Brief description	silver colored odorless solid
External identifiers / databases
EC number	235-286-8
ECHA InfoCard	100.032.066
PubChem	6336988
Wikidata	Q195035
properties
Molar mass	345.79 g mol −1
Physical state	firmly
density	7.9 g cm −3
Melting point	825 ° C
solubility	almost insoluble in water
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 261-280-305 + 351 + 338-304 + 340-405-501
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Pentacopper silicide is an intermetallic compound from the group of silicides with the empirical formula Cu ₅ Si, with a narrow phase width . This connection is also formed with a little more or less silicon compared to copper . In addition to this, a large number of other Cu – Si phases ( Hume-Rothery phases ), including Cu ₃₁ Si ₈ and Cu ₃ Si, are known.

Extraction and presentation

Pentacopper silicide can be obtained in an electric arc furnace directly from the stoichiometrically used elements copper and silicon with the exclusion of air. The phase forms peritectically above 700 ° C in a narrow composition range.

properties

Pentacopper silicide is a silver colored, odorless solid that is not soluble in water. The compound forms a cubic crystal structure in the β- manganese type, with the distribution of copper and silicon being statistical, i.e. random.

literature

RR Chromik, WK Neils, EJ Cotts: Thermodynamic and kinetic study of solid state reactions in the Cu-Si system. In: Journal of Applied Physics. 86, 1999, p. 4273, doi : 10.1063 / 1.371357 .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g data sheet pentacopper silicide at AlfaAesar, accessed on December 13, 2015 ( PDF )(JavaScript required) .
^ EG Rochow: The Chemistry of Silicon Pergamon International Library of Science, Technology, Engineering and Social Studies . Elsevier, 2013, ISBN 978-1-4831-8755-6 , pp. 1361 ( limited preview in Google Book search).
^ Christoph Janiak, Hans-Jürgen Meyer, Dietrich Gudat, Ralf Alsfasser: Riedel Modern Inorganic Chemistry . Walter de Gruyter, 2012, ISBN 978-3-11-024901-9 , p. 259 ( limited preview in Google Book search).
↑ ^a ^b Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani: Experimental investigation of the Cu – Si phase diagram at x (Cu)> 0.72. In: Intermetallics. 19, 2011, p. 1479, doi : 10.1016 / j.intermet.2011.05.017 .
↑ Günter Gottstein: Materials science and materials technology, physical basics . Springer-Verlag, 2013, ISBN 978-3-642-36603-1 , p. 157 ( limited preview in Google Book search).
↑ RW Olesinski, GJ Abbaschian: The Cu − Si (Copper-Silicon) system. In: Bulletin of Alloy Phase Diagrams. 7, 1986, p. 170, doi : 10.1007 / BF02881559 .

[Alfa-1] ↑ ^a ^b ^c ^d ^e ^f ^g data sheet pentacopper silicide at AlfaAesar, accessed on December 13, 2015 ( PDF )(JavaScript required) .

[E._G._Rochow-2] EG Rochow: The Chemistry of Silicon Pergamon International Library of Science, Technology, Engineering and Social Studies . Elsevier, 2013, ISBN 978-1-4831-8755-6 , pp. 1361 ( limited preview in Google Book search).

[Christoph_Janiak,_Hans-Jürgen_Meyer,_Dietrich_Gudat,_Ralf_Alsfasser-3] Christoph Janiak, Hans-Jürgen Meyer, Dietrich Gudat, Ralf Alsfasser: Riedel Modern Inorganic Chemistry . Walter de Gruyter, 2012, ISBN 978-3-11-024901-9 , p. 259 ( limited preview in Google Book search).

[Sufryd2011-4] Katarzyna Sufryd, Norbert Ponweiser, Paola Riani, Klaus W. Richter, Gabriele Cacciamani: Experimental investigation of the Cu – Si phase diagram at x (Cu)> 0.72. In: Intermetallics. 19, 2011, p. 1479, doi : 10.1016 / j.intermet.2011.05.017 .

[Günter_Gottstein-5] Günter Gottstein: Materials science and materials technology, physical basics . Springer-Verlag, 2013, ISBN 978-3-642-36603-1 , p. 157 ( limited preview in Google Book search).

[Olesinski1986-6] RW Olesinski, GJ Abbaschian: The Cu − Si (Copper-Silicon) system. In: Bulletin of Alloy Phase Diagrams. 7, 1986, p. 170, doi : 10.1007 / BF02881559 .