Nonahydriorenate (VII) sodium

Nonahydriorenate
Nonahydriorenate
General
Systematic ; name	Nonahydriorenate (VII) sodium
Chem. formula	Na 2 [ReH 9 ]
Physical properties
condition	colorless (white) crystals
Molar mass	241.26 g / mol

Sodium nonhydridorenate (VII) is an inorganic compound, a complex hydride of sodium and rhenium metals with the formula Na ₂ [ReH ₉ ], colorless (white) crystals soluble in cold water are oxidized by atmospheric oxygen .

Content

1 Receiving
2 Physical properties
3 Chemical properties
4 Literature

Getting

When recovering ammonium perrenate sodium in ethanol :

{\mathsf {NH_{4}ReO_{4}+18Na+13C_{2}H_{5}OH\ {\xrightarrow {}}\ Na_{2}[ReH_{9}]\downarrow +13C_{2}H_{5}ONa+3NaOH+NH_{3}\cdot H_{2}O}}

{\ displaystyle {\ mathsf {NH_ {4} ReO_ {4} + 18Na + 13C_ {2} H_ {5} OH \ {\ xrightarrow {}} \ Na_ {2} [ReH_ {9}] \ downarrow + 13C_ { 2} H_ {5} ONa + 3NaOH + NH_ {3} \ cdot H_ {2} O}}}

Physical Properties

Sodium nonahydriorenate (VII) forms colorless (white) crystals, readily soluble in cold water, reacts with hot water, and is oxidized by atmospheric oxygen.

Chemical Properties

Decomposes on heating:

{\mathsf {2Na_{2}[ReH_{9}]\ {\xrightarrow {245^{o}C}}\ 4NaH+2Re+7H_{2}}}

{\ displaystyle {\ mathsf {2Na_ {2} [ReH_ {9}] \ {\ xrightarrow {245 ^ {o} C}} \ 4NaH + 2Re + 7H_ {2}}}}

Reacts with hot water:

{\mathsf {Na_{2}[ReH_{9}]+5H_{2}O\ {\xrightarrow {100^{o}C}}\ NaReO_{4}+NaOH+9H_{2}}}

{\ displaystyle {\ mathsf {Na_ {2} [ReH_ {9}] + 5H_ {2} O \ {\ xrightarrow {100 ^ {o} C}} \ NaReO_ {4} + NaOH + 9H_ {2}}} }

Reacts with diluted acids :

{\mathsf {2Na_{2}[ReH_{9}]+4HCl\ {\xrightarrow {}}\ 4NaCl+2Re\downarrow +11H_{2}\uparrow }}

{\ displaystyle {\ mathsf {2Na_ {2} [ReH_ {9}] + 4HCl \ {\ xrightarrow {}} \ 4NaCl + 2Re \ downarrow + 11H_ {2} \ uparrow}}}

Reacts with hot nitric acid :

{\mathsf {4Na_{2}[ReH_{9}]+22HNO_{3}\ {\xrightarrow {100^{o}C}}\ 4NaReO_{4}+9NH_{4}NO_{3}+4NaNO_{3}+11H_{2}O}}

{\ displaystyle {\ mathsf {4Na_ {2} [ReH_ {9}] + 22HNO_ {3} \ {\ xrightarrow {100 ^ {o} C}} \ 4NaReO_ {4} + 9NH_ {4} NO_ {3} + 4NaNO_ {3} + 11H_ {2} O}}}

Reacts with hot concentrated hydrogen peroxide :

{\mathsf {Na_{2}[ReH_{9}]+9H_{2}O_{2}\ {\xrightarrow {100^{o}C}}\ NaReO_{4}+NaOH+13H_{2}O}}

{\ displaystyle {\ mathsf {Na_ {2} [ReH_ {9}] + 9H_ {2} O_ {2} \ {\ xrightarrow {100 ^ {o} C}} \ NaReO_ {4} + NaOH + 13H_ {2 } O}}}

Oxidized by atmospheric oxygen :

{\mathsf {4Na_{2}[ReH_{9}]+11O_{2}\ {\xrightarrow {\tau }}\ 4Re+8NaOH+14H_{2}O}}

{\ displaystyle {\ mathsf {4Na_ {2} [ReH_ {9}] + 11O_ {2} \ {\ xrightarrow {\ tau}} \ 4Re + 8NaOH + 14H_ {2} O}}}

Literature

Lidin R.A. and other Chemical properties of inorganic substances: Textbook. manual for universities. - 3rd ed., Rev. - M .: Chemistry, 2000 .-- 480 p. - ISBN 5-7245-1163-0 .
Ripan R., Chetyanu I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1972. - T. 2. - 871 p.