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Iron carbonyl

Iron carbonyl
Iron carbonyl structure
CAS No.
37220-42-1
Chemical Name:
Iron carbonyl
Synonyms
IRON CARBONYL;IRON PENTACARBONYL
CBNumber:
CB82130857
Molecular Formula:
Fe(CO)5
Formula Weight:
85.87
MOL File:
37220-42-1.mol

Iron carbonyl Properties

EWG's Food Scores
1
FDA UNII
6WQ62TAQ6Z
EPA Substance Registry System
Iron carbonyl (Fe(CO)5), (TB-5-11)-(37220-42-1)
SAFETY
  • Risk and Safety Statements
RIDADR  UN 1994 6.1/ PGI
HazardClass  6.1
PackingGroup  I
NFPA 704
3
2 1

Iron carbonyl Chemical Properties,Uses,Production

Chemical Properties

Mobile, yellow liquid.Evolves carbon monoxide on exposure to air or light. Soluble in nickel tetracarbonyl and most organic solvents; soluble with decomposition in acids and alkalies; insoluble in water.

Chemical Properties

Iron pentacarbonyl reacts with cyclopentadiene at 135° in an autoclave to give the binuclear complex [(π-C5H5)Fe(CO)2]2 as deep reddish-purple crystals which are stable to air and water. The crystal structure determination shows this molecule to be centrosymmetric with two bridging carbonyls forming a plane with the two iron atoms [Fig. 19(a)]. The rather short Fe-Fe distance of 2-49 ? and the diamagnetism of the compound indicate the presence of the Fe-Fe bond. In solution, however, it tautomerizes to the structure believed to be that shown in Fig.19(b),in which the two rings lie on one side of the mean plane formed by the bridging carbonyl groups and the iron atoms and the two terminal CO groups lie on the other side.
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Uses

Iron pentacarbonyl is a useful dehalogenating and carbonylating agent.

Uses

Catalyst in organic reactions, carbonyl iron for high-frequency coils.

Hazard

Flammable, dangerous fire risk. Toxic by ingestion, inhalation, and skin absorption.

Structure and conformation

The trigonal bipyramidal structure has been preferred to the square pyramidal one in the interpretation of electron diffraction, Raman and infrared and thermodynamic data; the apparently contradictory dipole moment of 0-8 D being attributed to atom polarization. A single crystal X-ray structure determination at - 80°C has confirmed the trigonal bipyramidalstructure.

Iron carbonyl Preparation Products And Raw materials

Raw materials

Preparation Products

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