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Rhenium (VI) oxide

Rhenium oxide (VI) is an inorganic compound, rhenium metal oxide with the formula ReO 3 , dark red crystals, insoluble in water.

Rhenium oxide
Rhenium (VI) oxide
Rhenium (VI) oxide
General
Systematic
name		Rhenium (VI) oxide
Traditional namesRhenium Oxide (VI)
Chem. formulaReO 3
Physical properties
conditiondark red crystals
Molar mass234.20 g / mol
Density6.9-7.4; 7.3; 7.43 g / cm³
Thermal properties
T. melt.160 ° C
T. bale.620 ° C
Enthalpy of Education-602 kJ / mol
Classification
Reg. CAS number1314-28-9
PubChem
Reg. EINECS number
Smiles
Inchi
Reg. EC number215-228-8
ChemSpider

Content

  • 1 Receiving
  • 2 Physical properties
  • 3 Chemical properties
  • 4 Literature

Getting

  • The proportionality of rhenium oxide (VII) :
3Re2O7+Re→250-300oC,N27ReO3{\ displaystyle {\ mathsf {3Re_ {2} O_ {7} + Re \ {\ xrightarrow {250-300 ^ {o} C, N_ {2}}} \ 7ReO_ {3}}}}  
Re2O7+ReO2→145oC,N23ReO3{\ displaystyle {\ mathsf {Re_ {2} O_ {7} + ReO_ {2} \ {\ xrightarrow {145 ^ {o} C, N_ {2}}} \ 3ReO_ {3}}}}  
  • Rhenium (VII) oxide reduction with carbon monoxide :
Re2O7+CO→ToC2ReO3+CO2{\ displaystyle {\ mathsf {Re_ {2} O_ {7} + CO \ {\ xrightarrow {T ^ {o} C}} \ 2ReO_ {3} + CO_ {2}}}}  

Physical Properties

Rhenium oxide (VI) forms dark red paramagnetic crystals of cubic syngony , space group P m3m , cell parameters a = 0.3734 nm, Z = 1.

Not soluble in water.

Chemical Properties

  • Decomposes on heating:
3ReO3→300oC,vacuumReO2+Re2O7{\ displaystyle {\ mathsf {3ReO_ {3} \ {\ xrightarrow {300 ^ {o} C, vacuum}} \ ReO_ {2} + Re_ {2} O_ {7}}}}  
8ReO3→400oC,vacuumfourReO2+2Re2O7+O2{\ displaystyle {\ mathsf {8ReO_ {3} \ {\ xrightarrow {400 ^ {o} C, vacuum}} \ 4ReO_ {2} + 2Re_ {2} O_ {7} + O_ {2}}}}  
  • Oxidized with concentrated nitric acid :
ReO3+HNO3→HReOfour+NO2↑{\ displaystyle {\ mathsf {ReO_ {3} + HNO_ {3} \ {\ xrightarrow {}} \ HReO_ {4} + NO_ {2} \ uparrow}}}  
  • With alkali metal hydroxides forms rhenites and perrenates :
3ReO3+fourNaOH→Na2ReO3+2NaReOfour+2H2O{\ displaystyle {\ mathsf {3ReO_ {3} + 4NaOH \ {\ xrightarrow {}} \ Na_ {2} ReO_ {3} + 2NaReO_ {4} + 2H_ {2} O}}}  
  • Oxidized by atmospheric oxygen :
fourReO3+O2→160-400oC2Re2O7{\ displaystyle {\ mathsf {4ReO_ {3} + O_ {2} \ {\ xrightarrow {160-400 ^ {o} C}} \ 2Re_ {2} O_ {7}}}}  
  • Hydrogen Restored:
ReO3+3H2→450-800oCRe+3H2O{\ displaystyle {\ mathsf {ReO_ {3} + 3H_ {2} \ {\ xrightarrow {450-800 ^ {o} C}} \ Re + 3H_ {2} O}}}  

Literature

  • Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1995. - T. 4. - 639 p. - ISBN 5-82270-092-4 .
  • 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. 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.



Source - https://ru.wikipedia.org/w/index.php?title=Renium Oxide ( VI)&oldid = 57643574


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