Lithium hypophosphite

Lithium hypophosphite
Lithium hypophosphite
Are common
Systematic ; name	Lithium hypophosphite
Traditional names	Hyphosphorus lithium
Chem. formula	LiPH 2 O 2
Physical properties
condition	colorless crystals
Molar mass	71.93 g / mol
Density	1,547 g / cm³

Lithium hypophosphite is an inorganic compound, a salt of lithium and hypophosphorous acid with the formula LiPH ₂ O ₂ , colorless crystals, soluble in water, forms crystalline hydrates .

Content

Getting

The exchange reaction between lithium sulfate and barium hypophosphite :

{\mathsf {Li_{2}SO_{4}+Ba(PH_{2}O_{2})_{2}\ {\xrightarrow {}}\ 2LiPH_{2}O_{2}+BaSO_{4}\downarrow }}

{\ displaystyle {\ mathsf {Li_ {2} SO_ {4} + Ba (PH_ {2} O_ {2}) _ {2} \ {\ xrightarrow {}} \ 2LiPH_ {2} O_ {2} + BaSO_ { 4} \ downarrow}}}

Physical Properties

Lithium hypophosphite forms colorless hygroscopic monoclinic crystals, space group C 2 / m , cell parameters a = 0.93557 nm, b = 0.53107 nm, c = 0.65432 nm, β = 108.259 °, Z = 4 ^[1] .

Soluble in water.

Forms crystalline hydrate composition LiPH ₂ O ₂ • H ₂ O.

Chemical Properties

When heated, decomposes with ignition:

{\mathsf {9LiPH_{2}O_{2}\ {\xrightarrow {T}}\ 2Li_{4}P_{2}O_{7}+LiPO_{3}+4PH_{3}+2H_{2}+H_{2}O}}

{\ displaystyle {\ mathsf {9LiPH_ {2} O_ {2} \ {\ xrightarrow {T}} \ 2Li_ {4} P_ {2} O_ {7} + LiPO_ {3} + 4PH_ {3} + 2H_ {2 } + H_ {2} O}}}

Notes

↑ M.I. Naumova, N.V. Kuratyeva, D.Yu. Naumov, N.V. Podberezskaya ,. Synthesis and crystalline structures of anhydrous hypophosphites of lithium and ammonium // Journal of structural chemistry. - 2004. - Vol. 45 , No. 3 . - p . 491–496 . Archived May 17, 2014.

Literature

Plushev V.E., Stepin B.D. Chemistry and technology of compounds of lithium, rubidium and cesium. - M .: "Chemistry", 1970. - 408 p.

[1] M.I. Naumova, N.V. Kuratyeva, D.Yu. Naumov, N.V. Podberezskaya ,. Synthesis and crystalline structures of anhydrous hypophosphites of lithium and ammonium // Journal of structural chemistry. - 2004. - Vol. 45 , No. 3 . - p . 491–496 . Archived May 17, 2014.

Lithium hypophosphite
Are common
Systematic name	Lithium hypophosphite
Traditional names	Hyphosphorus lithium
Chem. formula	LiPH ₂ O ₂
Physical properties
condition	colorless crystals
Molar mass	71.93 g / mol
Density	1,547 g / cm³