Bromopentacarbonylrhenium(I)

Bromopentacarbonylrhenium(I) is a chemical compound with the formula Re(CO)5Br. This organometallic compound is a colorless liquid that is soluble in organic solvents. It is a member of the class of compounds known as metal carbonyls, which are complexes that contain a metal atom bonded to carbon monoxide ligands.

Structure and Bonding

Bromopentacarbonylrhenium(I) consists of a rhenium atom at the center, surrounded by five carbon monoxide ligands and one bromine atom. The rhenium atom is in the +1 oxidation state. The molecule has a distorted octahedral geometry, with the bromine atom occupying one of the axial positions.

Synthesis

Bromopentacarbonylrhenium(I) can be synthesized by the reaction of hexacarbonylrhenium with bromine. The reaction is typically carried out in a solvent such as dichloromethane.

Applications

Bromopentacarbonylrhenium(I) is used as a precursor to other rhenium complexes. It can also be used in the synthesis of radiopharmaceuticals due to the radioactive nature of some isotopes of rhenium.

Safety

Like many organometallic compounds, bromopentacarbonylrhenium(I) is sensitive to air and moisture. It should be handled under an inert atmosphere and stored in a cool, dry place.

See Also

• Hexacarbonylrhenium
• Metal carbonyls
• Organometallic chemistry