Thallium (III) oxide

Thallium oxide is a binary inorganic compound of thallium metal and oxygen with the formula Tl ₂ O ₃ , dark brown crystals.

Getting

{\mathsf {4Tl+2O_{2}\ {\xrightarrow {400^{o}C}}\ Tl_{2}O+Tl_{2}O_{3}}}

{\ displaystyle {\ mathsf {4Tl + 2O_ {2} \ {\ xrightarrow {400 ^ {o} C}} \ Tl_ {2} O + Tl_ {2} O_ {3}}}}

{\mathsf {2Tl+3H_{2}O_{2}\ {\xrightarrow {}}\ Tl_{2}O_{3}+3H_{2}O}}

{\ displaystyle {\ mathsf {2Tl + 3H_ {2} O_ {2} \ {\ xrightarrow {}} \ Tl_ {2} O_ {3} + 3H_ {2} O}}}

{\mathsf {2TlCl_{3}+6NaOH\ {\xrightarrow {100^{o}C}}\ Tl_{2}O_{3}\downarrow +6NaCl+3H_{2}O}}

{\ displaystyle {\ mathsf {2TlCl_ {3} + 6NaOH \ {\ xrightarrow {100 ^ {o} C}} \ Tl_ {2} O_ {3} \ downarrow + 6NaCl + 3H_ {2} O}}}

the precipitate consists of thallium oxide polyhydrate Tl ₂ O ₃ • n H ₂ O.

{\mathsf {4{Tl(NO_{3})_{3}\cdot 3H_{2}O}\ {\xrightarrow {300^{o}C}}\ 2Tl_{2}O_{3}+12NO_{2}+3O_{2}+H_{2}O}}

{\ displaystyle {\ mathsf {4 {Tl (NO_ {3}) _ {3} \ cdot 3H_ {2} O} \ {\ xrightarrow {300 ^ {o} C}} \ 2Tl_ {2} O_ {3} + 12NO_ {2} + 3O_ {2} + H_ {2} O}}}

Thallium oxide - dark brown crystals of cubic syngony , space group I a3 , cell parameters a = 1,059 nm, Z = 16.

{\mathsf {Tl_{2}O_{3}\ {\xrightarrow {500^{o}C}}\ Tl_{2}O+O_{2}}}

{\ displaystyle {\ mathsf {Tl_ {2} O_ {3} \ {\ xrightarrow {500 ^ {o} C}} \ Tl_ {2} O + O_ {2}}}}

{\mathsf {Tl_{2}O_{3}+6HNO_{3}\ {\xrightarrow {}}\ 2Tl(NO_{3})_{3}+3H_{2}O}}

{\ displaystyle {\ mathsf {Tl_ {2} O_ {3} + 6HNO_ {3} \ {\ xrightarrow {}} \ 2Tl (NO_ {3}) _ {3} + 3H_ {2} O}}}

{\mathsf {Tl_{2}O_{3}+4H_{2}SO_{4}\ {\xrightarrow {}}\ TlH(SO_{4})_{2}\downarrow +3H_{2}O}}

{\ displaystyle {\ mathsf {Tl_ {2} O_ {3} + 4H_ {2} SO_ {4} \ {\ xrightarrow {}} \ TlH (SO_ {4}) _ {2} \ downarrow + 3H_ {2} O}}}

{\mathsf {Tl_{2}O_{3}+2NaOH\ {\xrightarrow {450-575^{o}C}}\ 2NaTlO_{2}+H_{2}O}}

{\ displaystyle {\ mathsf {Tl_ {2} O_ {3} + 2NaOH \ {\ xrightarrow {450-575 ^ {o} C}} \ 2NaTlO_ {2} + H_ {2} O}}}

{\mathsf {Tl_{2}O_{3}+2H_{2}\ {\xrightarrow {150^{o}C}}\ Tl_{2}O+2H_{2}O}}

{\ displaystyle {\ mathsf {Tl_ {2} O_ {3} + 2H_ {2} \ {\ xrightarrow {150 ^ {o} C}} \ Tl_ {2} O + 2H_ {2} O}}}

with concentrated hydrochloric acid, the oxidizing properties of thallium oxide are manifested:

{\mathsf {Tl_{2}O_{3}+8HCl\ {\xrightarrow {}}\ 2H[TlCl_{2}]+2Cl_{2}\uparrow +3H_{2}O}}

{\ displaystyle {\ mathsf {Tl_ {2} O_ {3} + 8HCl \ {\ xrightarrow {}} \ 2H [TlCl_ {2}] + 2Cl_ {2} \ uparrow + 3H_ {2} O}}}

The oxidizing properties of thallium oxide are also manifested in other reactions:

{\mathsf {2Tl_{2}O_{3}+5S\ {\xrightarrow {}}\ 2Tl_{2}S_{3}+3SO_{2}}}

{\ displaystyle {\ mathsf {2Tl_ {2} O_ {3} + 5S \ {\ xrightarrow {}} \ 2Tl_ {2} S_ {3} + 3SO_ {2}}}}

{\mathsf {2Tl_{2}O_{3}+2H_{2}O_{2}\ {\xrightarrow {}}\ 4TlOH+3O_{2}\uparrow }}

{\ displaystyle {\ mathsf {2Tl_ {2} O_ {3} + 2H_ {2} O_ {2} \ {\ xrightarrow {}} \ 4TlOH + 3O_ {2} \ uparrow}}}

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