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Ruthenium pentacarbonyl

Chemical compound

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1281766815 · 2025-03-22T10:36:35Z
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Ruthenium3 uses in this article presence2 uses in this article solution2 uses in this article light-sensitive1 uses in this article carbonylation1 uses in this article contamination1 uses in this article pentacarbonyl1 uses in this article intermediate1 uses in this article preparation1 uses in this article completely1 uses in this article originally1 uses in this article photolysis1 uses in this article synthesis1 uses in this article typically1 uses in this article academic1 uses in this article carbonyl1 uses in this article compound1 uses in this article interest1 uses in this article monoxide1 uses in this article prepared1 uses in this article

Overview

Ruthenium pentacarbonyl is the ruthenium compound with the formula Ru(CO) 5 . It is a colorless, light-sensitive liquid that readily decarbonylates upon standing at room temperature. It is of academic interest as an intermediate for the synthesis of metal carbonyl complexes.

Preparation

Ru(CO) 5 was originally prepared by carbonylation of ruthenium salts in the presence of a reducing agent. A more recent preparation involves photolysis of triruthenium dodecacarbonyl in the presence of carbon monoxide: :Ru 3 (CO) 12 + 3 CO 3 Ru(CO) 5 It is characterized by two intense ν CO bands in the IR spectrum at 2038 and 2003 cm −1 (hexane solution).

Comparisons of M(CO) 5 (M = Fe, Ru, Os)

Whereas Fe(CO) 5 is completely robust at room temperature, samples of Ru(CO) 5 are typically reddish owing to contamination by Ru 3 (CO) 12 . The conversion is rapid in solution. Os(CO) 5 requires heating to 80 °C to effect conversion to triosmium dodecacarbonyl.

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