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ChemSpider 21106461 YesY
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Molecular formula ReH(CO)5
Molar mass 327.265 g/mol
Appearance Colorless liquid
Density 2.30 g/mL, liquid
Melting point 12.5 °C (54.5 °F; 285.6 K)
Boiling point 100 °C (212 °F; 373 K) (decomposes)
Solubility in water Insoluble
Main hazards Flammable
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Pentacarbonylhydridorhenium is a chemical compound with the formula ReH(CO)5. This colorless liquid is a weak acid and represents one of the most important derivatives of dirhenium decacarbonyl (Re2(CO)10). It is synthesized by treating a methanolic solution of bromopentacarbonylrhenium(I) (Re(CO)5Br) with zinc and acetic acid (HOAc). [1]

Re(CO)5Br + Zn + HOAc → ReH(CO)5 + ZnBrOAc

It is moderately sensitive to light: samples turn yellow due to the formation of the metal cluster Re3H(CO)14

3 Re(CO)5H → Re3H(CO)14 + H2 + CO

At 100 °C, it decomposes to Re2(CO)10:[1]

2 Re(CO)5H → H2 + Re2(CO)10


  1. ^ a b Michael A. Urbancic, John R. Shapley (1990). "Pentacarbonylhydridorhenium". Inorganic Syntheses 28: 165–8. doi:10.1002/9780470132593.ch43.