Heptalithium distannide

Heptalithium distannide
Heptalithium distannide
Are common
Systematic ; name	Heptalithium distannide
Chem. formula	Li 7 Sn 2
Rat formula	Sn 2 Li 7
Physical properties
condition	crystals
Molar mass	286.01 g / mol
Density	2.99 g / cm³
Thermal properties
T. melt.	783 ° C
Enthalpy of melting	20.2
Classification
Reg. CAS number	55608-41-8

Heptalithium distannide is a binary intermetallic inorganic compound of tin and lithium with the formula Li ₇ Sn ₂ , crystals.

Content

Getting

Fusion of stoichiometric amounts of pure substances:

{\mathsf {7Li+2Sn\ {\xrightarrow {783^{o}C}}\ Li_{7}Sn_{2}}}

{\ displaystyle {\ mathsf {7Li + 2Sn \ {\ xrightarrow {783 ^ {o} C}} \ Li_ {7} Sn_ {2}}}}

Physical Properties

Heptalithium distanide forms monoclinic syngony crystals, space group C mmm , cell parameters a = 0.980 nm, b = 1.38 nm, c = 0.475 nm, Z = 4, heptalithide-germanium type structure Ge ₂ Li ₇ ^[2] ^[3] ^[4 ^] ^] .

The compound melts congruently at a temperature of 783 ° C ^[5] .

Notes

↑ P. Franke, D. Neuschütz. Li-Sn (Lithium - Tin) // Landolt-Börnstein - Group IV Physical Chemistry. - 2007.- T. 19B5 . - S. 1-4 . - DOI : 10.1007 / 978-3-540-45280-5_87 .
↑ Inorganic Chemistry of the Main-Group Elements / CC Addison. - The Chemical Society, 1977. - T. 4. - ISBN 978-0-85186-782-3 .
↑ B. Predel. Li-Sn (Lithium-Tin) // Landolt-Börnstein - Group IV Physical Chemistry. - 1997. - T. 5H . - S. 1-4 . - DOI : 10.1007 / 10522884_1927 .
↑ J. Sangster, CW Bale. The Li-Sn (Lithium-Tin) system // Journal of Phase Equilibria. - 1998. - T. 19 , No. 1 . - S. 70-75 . - DOI : 10.1361 / 105497198770342788 .
↑ State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Engineering, 2001. - T. 3 Book 1. - 972 p. - ISBN 5-217-02843-2 .

Literature

Ursula Frank, Wiking Müller, Herbert Schäfer. Die Kristallstruktur der Phase Li ₇ Sn ₂ / The Crystal Structure of Li ₇ Sn ₂ // Zeitschrift für Naturforschung B. - 1975. - Vol. 30. - DOI : 10.1515 / znb-1975-1-203 .