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Samaris Silver

Samaridisilver is a binary inorganic compound of silver and samarium with the formula Ag 2 Sm, crystals.

Samaris Silver
Are common
Systematic
name
Samaris Silver
Traditional namesDiserebro Samaria
Chem. formulaAg 2 Sm
Rat formulaSmAg 2
Physical properties
conditioncrystals
Molar mass366.10 g / mol
Thermal properties
T. decomp.790 ° C
Classification
Reg. CAS number74846-01-8

Getting

  • Fusion of stoichiometric amounts of pure substances:
2Ag+Sm→790oCAg2Sm{\ displaystyle {\ mathsf {2Ag + Sm \ {\ xrightarrow {790 ^ {o} C}} \ Ag_ {2} Sm}}} {\displaystyle {\mathsf {2Ag+Sm\ {\xrightarrow {790^{o}C}}\ Ag_{2}Sm}}}

Physical Properties

Samaride silver forms tetragonal crystal crystals, cell parameters a = 1.59 nm , c = 2.97 nm .

At a temperature of 790 ° С, a transition to the hexagonal syngony phase occurs, the space group P 6 3 , cell parameters a = 1.271 nm , c = 0.9430 nm , plutonium tri silver silver structure Ag 3 Pu [1] [2] [3] [4] [5] .

The compound is formed by a peritectic reaction at a temperature of 790 ° C [1] .

Notes

  1. ↑ 1 2 State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Mechanical Engineering, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .
  2. ↑ B. Predel. Ag-Sm (Silver - Samarium) // Landolt-Börnstein - Group IV Physical Chemistry. - 2006. - T. 12A . - S. 1 . - DOI : 10.1007 / 10793176_62 .
  3. ↑ B. Predel. Ag-Sm (Silver-Samarium) // Landolt-Börnstein - Group IV Physical Chemistry. - 1991 .-- T. 5a . - S. 1-2 . - DOI : 10.1007 / 10000866_69 .
  4. ↑ KA Gschneidner, FW Calderwood. The Ag − Sm (Silver-Samarium) system // Bulletin of Alloy Phase Diagrams. - 1985. - T. 6 , No. 2 . - S. 142-143 . - DOI : 10.1007 / BF02869229 .
  5. ↑ [Bulletin of Alloy Phase Diagrams Ag − Sm]. - 1985. - T. 6 , No. 2 . - S. 175-176 . - DOI : 10.1007 / BF02869240 .



Source - https://ru.wikipedia.org/w/index.php?title=Samaris and silver&oldid = 88750612


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Clever Geek | 2019