Nomenclature
CAS number: 17440-90-3
(
T-4)-Dihydrogen tetracarbonylferrate(2); iron hydrocarbonyl; iron tetracarbonyl dihydride.
C
4H
2FeO
4; mol wt 169.90.
C 28.28%, H 1.19%, Fe 32.87%, O 37.67%.
H
2Fe(CO)
4.
Description and references
Prepn from Fe(CO)5: Blanchard,
Coleman, Inorg. Synth. 2, 243 (1946); Sternberg et al., J. Am. Chem. Soc. 79, 6116 (1957); Bishop et al., J. Chem. Soc. 1959, 2484.
Properties
Colorless crystals, mp 70°; colorless liq, very unstable, dec below 10°
on exposure to air. Slight traces of iron carbonyls impart a red
or yellow color. Gas has extremely nauseating odor. Sol in alkalies;
neutral aq solns of salts unstable at room temp; strongly alkaline
solns of salts, e.g. K2Fe(CO)4, are stable at
room temp when all traces of air are excluded but dec gradually at
100° to CO and H2.Status
This monograph has been retired and is no longer subject
to revision or update.