Pentacarbonylhydridorhenium is a
chemical compound
A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element ...
with the
formula
In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a ''chemical formula''. The informal use of the term ''formula'' in science refers to the general construct of a relationship betwee ...
ReH(CO)
5. This colorless liquid is a weak acid and represents one of the most important derivatives of
dirhenium decacarbonyl
Dirhenium decacarbonyl is the inorganic compound with the chemical formula Re2(CO)10 . Commercially available, it is used as a starting point for the synthesis of many rhenium carbonyl complexes. It was first reported in 1941 by Walter Hieber, who ...
(Re
2(CO)
10). It is synthesized by treating a
methanol
Methanol (also called methyl alcohol and wood spirit, amongst other names) is an organic chemical and the simplest aliphatic alcohol, with the formula C H3 O H (a methyl group linked to a hydroxyl group, often abbreviated as MeOH). It is a ...
ic solution of
bromopentacarbonylrhenium(I)
Bromopentacarbonylrhenium(I) is an inorganic compound of rhenium, commonly used for the syntheses of other rhenium complexes.
Preparation
Bromopentacarbonylrhenium(I) is commercially available. It is also easily and inexpensively synthesized by th ...
(Re(CO)
5Br) with zinc and
acetic acid
Acetic acid , systematically named ethanoic acid , is an acidic, colourless liquid and organic compound with the chemical formula (also written as , , or ). Vinegar is at least 4% acetic acid by volume, making acetic acid the main component ...
(HOAc).
: 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
In chemistry, an atom cluster (or simply cluster) is an ensemble of bound atoms or molecules that is intermediate in size between a simple molecule and a nanoparticle; that is, up to a few nanometers (nm) in diameter. The term ''microcluster ...
Re
3H(CO)
14
: 3 Re(CO)
5H → Re
3H(CO)
14 + H
2 + CO
At 100 °C, it decomposes to Re
2(CO)
10:
[
: 2 Re(CO)5H → H2 + Re2(CO)10
]
References
{{Rhenium compounds
Carbonyl complexes
Organorhenium compounds
Metal hydrides