Strontium hydride

Strontium hydride
Strontium hydride
Are common
Systematic ; name	Strontium hydride
Traditional names	Hydrogen strontium
Chem. formula	SrH 2
Rac formula	SrH 2
Physical properties
condition	White crystals
Molar mass	89.64 g / mol
Density	3.27 g / cm³
Thermal properties
T. melt.	> 650, 1050 ° C
Mol heat capacity	44 J / (mol · K)
Education enthalpy	-180 kJ / mol
Classification
Reg. CAS number	13598-33-9
Pubchem
Reg. EINECS number	237-065-1

Strontium hydride is a binary inorganic compound of strontium and hydrogen with the formula SrH ₂ , white crystals.

Content

Getting

Reduction of strontium oxide with hydrogen:

{\mathsf {SrO+2H_{2}{\xrightarrow {700-800^{o}C}}\ SrH_{2}+H_{2}O}}

{\ displaystyle {\ mathsf {SrO + 2H_ {2} {\ xrightarrow {700-800 ^ {o} C}} \ SrH_ {2} + H_ {2} O}}}

Direct interaction of elements:

{\mathsf {Sr+H_{2}\rightleftarrows SrH_{2}}}

{\ displaystyle {\ mathsf {Sr + H_ {2} \ rightleftarrows SrH_ {2}}}}

Physical Properties

Strontium hydride forms white crystals of the orthorhombic system , the space group P nam , cell parameters a = 0.6364 nm, b = 0.7343 nm, c = 0.3875 nm, Z = 4.

At 355 ° C, a phase transition occurs.

Chemical Properties

Thermally unstable, decomposes when strongly heated:

{\mathsf {SrH_{2}{\stackrel {\mathsf {675^{o}C}}{\rightleftarrows }}Sr+H_{2}\uparrow }}

{\ displaystyle {\ mathsf {SrH_ {2} {\ stackrel {\ mathsf {675 ^ {o} C}} {\ rightleftarrows}} Sr + H_ {2} \ uparrow}}}

Vigorously interacts with water:

{\mathsf {SrH_{2}+2H_{2}O{\xrightarrow {\ }}\ Sr(OH)_{2}+2H_{2}\uparrow }}

{\ displaystyle {\ mathsf {SrH_ {2} + 2H_ {2} O {\ xrightarrow {\}} \ Sr (OH) _ {2} + 2H_ {2} \ uparrow}}}

and with acids:

{\mathsf {SrH_{2}+2HCl{\xrightarrow {\ }}\ SrCl_{2}+2H_{2}\uparrow }}

{\ displaystyle {\ mathsf {SrH_ {2} + 2HCl {\ xrightarrow {\}} \ SrCl_ {2} + 2H_ {2} \ uparrow}}}

Application

Component of phosphors and phosphorescent compounds.
In the leather industry.

Literature

Ripan R., Chetyanu I. Inorganic chemistry. Metal Chemistry. - M .: Mir, 1971. - T. 1. - 561 p.
Chemist Handbook / Redkol .: Nikolsky B.P. et al. - 2nd ed., Rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
Chemist Handbook / Redkol .: Nikolsky B.P. et al. - 3rd ed., Rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Chemical Encyclopedia / Redkol .: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1995. - Vol. 4. - 639 p. - ISBN 5-82270-092-4 .

Strontium hydride
Are common
Systematic name	Strontium hydride
Traditional names	Hydrogen strontium
Chem. formula	SrH ₂
Rac formula	SrH ₂
Physical properties
condition	White crystals
Molar mass	89.64 g / mol
Density	3.27 g / cm³
Thermal properties
T. melt.	> 650, 1050 ° C
Mol heat capacity	44 J / (mol · K)
Education enthalpy	-180 kJ / mol
Classification
Reg. CAS number	13598-33-9
Pubchem
Reg. EINECS number	237-065-1