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Decacarbonidirhenium

Decacarbonylation is an inorganic compound, a rhenium carbonyl complex of composition Re 2 (CO) 10 . White crystals, insoluble in water.

Decacarbonidirhenium
Rhenium-carbonyl-3D-balls.png
Are common
Systematic
name		Decacarbonidirhenium
Chem. formulaRe 2 (CO) 10
Physical properties
conditionwhite crystals
Molar mass652.51 g / mol
Density2.79 g / cm³
Thermal properties
T. melt.177 ° C
Classification
Reg. CAS number14285-68-8
Pubchem
Reg. EINECS number
SMILES
Inchi
Chemspider

Getting

  • Effect on rhenium (VII) oxide with carbon monoxide under pressure:
Re2O7+17CO→250oC,pRe2(CO)ten+7CO2{\ displaystyle {\ mathsf {Re_ {2} O_ {7} + 17CO \ {\ xrightarrow {250 ^ {o} C, p}} \ Re_ {2} (CO) _ {10} + 7CO_ {2}} }} {\displaystyle {\mathsf {Re_{2}O_{7}+17CO\ {\xrightarrow {250^{o}C,p}}\ Re_{2}(CO)_{10}+7CO_{2}}}}
  • Reduction of potassium perrhenate with carbon monoxide under pressure:
2KReOfour+17CO→250-270oC,pRe2(CO)ten+K2CO3+6CO2{\ displaystyle {\ mathsf {2KReO_ {4} + 17CO \ {\ xrightarrow {250-270 ^ {o} C, p}} \ Re_ {2} (CO) _ {10} + K_ {2} CO_ {3 } + 6CO_ {2}}}} {\displaystyle {\mathsf {2KReO_{4}+17CO\ {\xrightarrow {250-270^{o}C,p}}\ Re_{2}(CO)_{10}+K_{2}CO_{3}+6CO_{2}}}}

Physical Properties

Decacarbonylation is formed of white crystals, insoluble in water, soluble in organic solvents ( hexane , dioxane ).

Chemical Properties

  • Decomposes when heated:
Re2(CO)ten→250-420oC2Re+tenCO{\ displaystyle {\ mathsf {Re_ {2} (CO) _ {10} \ {\ xrightarrow {250-420 ^ {o} C}} \ 2Re + 10CO}}} {\displaystyle {\mathsf {Re_{2}(CO)_{10}\ {\xrightarrow {250-420^{o}C}}\ 2Re+10CO}}}
  • Reacts with concentrated nitric acid :
Re2(CO)ten+34HNO3→2HReOfour+tenCO↑+34NO2↑+sixteenH2O{\ displaystyle {\ mathsf {Re_ {2} (CO) _ {10} + 34HNO_ {3} \ {\ xrightarrow {}} \ 2HReO_ {4} + 10CO \ uparrow + 34NO_ {2} \ uparrow + 16H_ {2 } O}}} {\displaystyle {\mathsf {Re_{2}(CO)_{10}+34HNO_{3}\ {\xrightarrow {}}\ 2HReO_{4}+10CO\uparrow +34NO_{2}\uparrow +16H_{2}O}}}
  • It is oxidized by oxygen :
2Re2(CO)ten+17O2→400oCRe2O7+tenCO2{\ displaystyle {\ mathsf {2Re_ {2} (CO) _ {10} + 17O_ {2} \ {\ xrightarrow {400 ^ {o} C}} \ Re_ {2} O_ {7} + 10CO_ {2} }}} {\displaystyle {\mathsf {2Re_{2}(CO)_{10}+17O_{2}\ {\xrightarrow {400^{o}C}}\ Re_{2}O_{7}+10CO_{2}}}}
2Re2(CO)ten+7O2+fourNaOH→fourNaReOfour+20CO↑+2H2O{\ displaystyle {\ mathsf {2Re_ {2} (CO) _ {10} + 7O_ {2} + 4NaOH \ {\ xrightarrow {}} \ 4NaReO_ {4} + 20CO \ uparrow + 2H_ {2} O}}} {\displaystyle {\mathsf {2Re_{2}(CO)_{10}+7O_{2}+4NaOH\ {\xrightarrow {}}\ 4NaReO_{4}+20CO\uparrow +2H_{2}O}}}
  • Reacts with halogens :
Re2(CO)ten+Cl2→2Re(CO)fiveCl{\ displaystyle {\ mathsf {Re_ {2} (CO) _ {10} + Cl_ {2} \ {\ xrightarrow {}} \ 2Re (CO) _ {5} Cl}}} {\displaystyle {\mathsf {Re_{2}(CO)_{10}+Cl_{2}\ {\xrightarrow {}}\ 2Re(CO)_{5}Cl}}}

Literature

  • Chemical Encyclopedia / Redkol .: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1995. - Vol. 4. - 639 p. - ISBN 5-82270-092-4 .
  • Chemical Encyclopedia / Redkol .: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1990. - T. 2. - 671 p. - ISBN 5-82270-035-5 .
  • Lidin R.A. and other Chemical properties of inorganic substances: Proc. manual for universities. - 3rd ed., Corr. - M .: Chemistry, 2000. - 480 p. - ISBN 5-7245-1163-0 .
  • Ripan R., Chetyanu I. Inorganic chemistry. Metal Chemistry. - M .: Mir, 1972. - T. 2. - 871 p.



Source - https://ru.wikipedia.org/w/index.php?title=Decarbonyldirheny&oldid=80663157


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