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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

Boiling point

100 °C (decomposes)

Solubility in water Insoluble
Main hazards Flammable
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and 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. [1]

Re(CO)5Br + Zn + HO2CCH3 → ReH(CO)5 + ZnBrO2CCH3)

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:

2 Re(CO)5H → H2 + Re2(CO)10 [1]


  1. ^ a b Michael A. Urbancic, John R. Shapley (1990). "Pentacarbonylhydridorhenium". Inorganic Syntheses 28: 165-8.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pentacarbonylhydridorhenium". A list of authors is available in Wikipedia.
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