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Iron carbonyl

Product Name:
Iron carbonyl
CAS No.
37220-42-1
Chemical Name:
Iron carbonyl
CBNumber:
CB82130857
Molecular Formula:
Fe(CO)5
Formula Weight:
85.87
MOL File:
37220-42-1.mol
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Iron carbonyl Property

EPA Substance Registry System
Iron carbonyl (Fe(CO)5), (TB-5-11)-(37220-42-1)
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Safety

RIDADR 
UN 1994 6.1/ PGI
HazardClass 
6.1
PackingGroup 
I
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Iron carbonyl Chemical Properties,Usage,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)].图 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),图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.

Uses

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

Uses

Iron pentacarbonyl is a useful dehalogenating and carbonylating agent.

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.

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