Abstract
[13463-40-6] C5FeO5 (MW 195.90) InChI = 1S/5CO.Fe/c5*1-2; InChIKey = FYOFOKCECDGJBF-UHFFFAOYSA-N (diene complexation;4 carbonyl insertion;62-64 cycloaddition; reduction96 and deoxygenation) Physical Data: mp −20 °C; bp 103 °C; fp −15 °C; d 1.490 g cm−3; n 1.5196; X-ray diffraction studies at −100 °C confirm the trigonal bipyramidal structure of Fe(CO)5.2 Solubility: miscible with organic solvents. Form Supplied in: straw-yellow liquid. Handling, Storage, and Precautions: Fe(CO)5 is a volatile, flammable, and highly toxic liquid,3 which does not react with air at room temperature. It has a relatively high vapor pressure (21 mmHg at 20 °C). When Fe(CO)5 is exposed to light, Fe2(CO)9 impurity slowly accumulates. The monomeric pentacarbonyl complex can be purified by trap-to-trap distillation in a vacuum system, but for routine use this purification step is usually omitted. Use in a fume hood.
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