Magnesium nitride

Magnesium nitride
Magnesium nitride
General
Systematic ; name	Magnesium nitride
Traditional names	Trimagnesium Dinitride, Magnesium Nitrogen
Chem. formula	Mg 3 N 2
Physical properties
condition	Yellowish green crystals
Molar mass	100.93 g / mol
Density	2.71 g / cm³
Thermal properties
T. melt.	decomp. 1500 ° C
Enthalpy of Education	461.3 kJ / mol
Classification
Reg. CAS number	12057-71-5
PubChem
Reg. EINECS number
Smiles
Inchi

Magnesium nitride is a binary inorganic compound of nitrogen and magnesium with the formula Mg ₃ N ₂ . Yellowish green crystals.

Content

1 Receiving
2 Physical properties
3 Chemical properties
4 Literature

Getting

Dry nitrogen passing over magnesium:

{\mathsf {3\ Mg+N_{2}\ {\xrightarrow {800^{o}C}}\ Mg_{3}N_{2}}}

{\ displaystyle {\ mathsf {3 \ Mg + N_ {2} \ {\ xrightarrow {800 ^ {o} C}} \ Mg_ {3} N_ {2}}}}

or ammonia:

{\mathsf {3\ Mg+2\ NH_{3}\ {\xrightarrow {700^{o}C}}\ Mg_{3}N_{2}+3\ H_{2}}}

{\ displaystyle {\ mathsf {3 \ Mg + 2 \ NH_ {3} \ {\ xrightarrow {700 ^ {o} C}} \ Mg_ {3} N_ {2} +3 \ H_ {2}}}}

Physical Properties

Magnesium nitride forms yellowish-green crystals of cubic syngony , space group Im m3m , cell parameters a = 0.995 nm, Z = 16. Phase transitions occur in crystals at 550 and 778 ° С.

Magnesium nitride fluoresces in orange.

Chemical Properties

When heated, decomposes:

{\mathsf {Mg_{3}N_{2}\ {\xrightarrow {1000^{o}C}}\ 3\ Mg+N_{2}}}

{\ displaystyle {\ mathsf {Mg_ {3} N_ {2} \ {\ xrightarrow {1000 ^ {o} C}} \ 3 \ Mg + N_ {2}}}}

Reacts with water:

{\mathsf {Mg_{3}N_{2}+6\ H_{2}O\ {\xrightarrow {100^{o}C}}\ 3\ Mg(OH)_{2}+2\ NH_{3}\uparrow }}

{\ displaystyle {\ mathsf {Mg_ {3} N_ {2} +6 \ H_ {2} O \ {\ xrightarrow {100 ^ {o} C}} \ 3 \ Mg (OH) _ {2} +2 \ NH_ {3} \ uparrow}}}

and acids:

{\mathsf {Mg_{3}N_{2}+8\ HCl\ {\xrightarrow {\ }}\ 3\ MgCl_{2}+2\ NH_{4}Cl}}

{\ displaystyle {\ mathsf {Mg_ {3} N_ {2} +8 \ HCl \ {\ xrightarrow {\}} \ 3 \ MgCl_ {2} +2 \ NH_ {4} Cl}}}

Oxidized by oxygen:

{\mathsf {2\ Mg_{3}N_{2}+3\ O_{2}\ {\xrightarrow {500^{o}C}}\ 6\ MgO+2\ N_{2}}}

{\ displaystyle {\ mathsf {2 \ Mg_ {3} N_ {2} +3 \ O_ {2} \ {\ xrightarrow {500 ^ {o} C}} \ 6 \ MgO + 2 \ N_ {2}}} }

Literature

Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1990. - T. 2. - 671 p. - ISBN 5-82270-035-5 .
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Lidin R. A. , Andreeva L. L. , Molochko V. A. Chemical properties of inorganic substances: Textbook. manual for universities - 3rd ed., Rev. - M .: Chemistry , 2000. - 480 p. - ISBN 5-7245-1163-0
<a href=" https://wikidata.org/wiki/Track:Q52153739 "> </a> <a href=" https://wikidata.org/wiki/Track:Q52153731 "> </a> <a href = " https://wikidata.org/wiki/Track:Q52153729 "> </a> <a href=" https://wikidata.org/wiki/Track:Q52153728 "> </a> <a href = " https://wikidata.org/wiki/Track:Q52153736 "> </a>
Ripan R., Chetyanu I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1971. - T. 1. - 561 p.