Iron pentacarbonyl

Iron pentacarbonyl
Iron carbonyl
Iron carbonyl
Iron carbonyl sample
Names
IUPAC name
Pentacarbonyliron(0)
Other names
Pentacarbonyl iron
Iron carbonyl
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.033.323 Edit this at Wikidata
RTECS number
  • NO4900000
UNII
UN number 1994
  • InChI=1S/5CO.Fe/c5*1-2; checkY
    Key: FYOFOKCECDGJBF-UHFFFAOYSA-N checkY
  • InChI=1/5CO.Fe/c5*1-2;
    Key: FYOFOKCECDGJBF-UHFFFAOYAX
  • O=C=[Fe](=C=O)(=C=O)(=C=O)=C=O
Properties
Fe(CO)5
Molar mass 195.90 g/mol
Appearance straw-yellow to brilliant orange liquid
Odor musty
Density 1.453 g/cm3
Melting point −21.0 °C (−5.8 °F; 252.2 K)
Boiling point 103 °C (217 °F; 376 K)
Insoluble
Solubility Soluble in organic solvents
slightly soluble in alcohol
insoluble in ammonia
Vapor pressure 40 mmHg (30.6 °C)[1]
1.5196 (20 °C)
Structure
D3h
trigonal bipyramidal
trigonal bipyramidal
0 D
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Very toxic, highly flammable
GHS labelling:
GHS02: FlammableGHS06: ToxicGHS08: Health hazard
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
4
3
1
Flash point −15 °C (5 °F; 258 K)
49 °C (120 °F; 322 K)
Explosive limits 3.7–12.5%
Lethal dose or concentration (LD, LC):
25 mg/kg (rat, oral)
NIOSH (US health exposure limits):
PEL (Permissible)
 none[1]
REL (Recommended)
 TWA 0.1 ppm (0.23 mg/m3) ST 0.2 ppm (0.45 mg/m3)[1]
IDLH (Immediate danger)
 0.4 ppm[1]
Safety data sheet (SDS) ICSC 0168
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Iron pentacarbonyl, also known as iron carbonyl, is the compound with formula Fe(CO)5. Under standard conditions Fe(CO)5 is a free-flowing, straw-colored liquid with a pungent odour. Older samples appear darker. This compound is a common precursor to diverse iron compounds, including many that are useful in small scale organic synthesis.[2]

  1. ^ a b c d NIOSH Pocket Guide to Chemical Hazards. "#0345". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ Samson, S.; Stephenson, G. R. (2004). "Pentacarbonyliron". In Paquette, L. (ed.). Encyclopedia of Reagents for Organic Synthesis. New York, NY: J. Wiley & Sons. doi:10.1002/047084289X. hdl:10261/236866. ISBN 9780471936237.