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Hazard Predictions

• Potentially hazardous: May be hazardous but unknown

When triiron dodecacarbonyl and 2,4-hexadienal were combined, the product consisted of iron tricarbonyl coordinated to the double bonds, and the aldehyde functionality remained unchanged (King, R.B., Manuel, T. A., Stone, F. G. A.; J. lnorg. Nucl. Chem.; 1961; Vol. 16; pp. 233 to 239).

Fe(CO)5 can decarbonylate aldehydes to hydrocarbons in the presence of a proton donor such as ether or water. This may occur through a radical intermediate. Radicals are generally very reactive and can be corrosive (S. J. Nelson, G. Detre, M. Tanabe, Tetrahedron Lett. 1973, 447).

H[Co(CO)4] and Na[HCr2(CO)10] can reduce unsaturated aldehydes to form saturated aldehydes (R. W. Goetz, M. Orchin, J. Am. Chem. Soc. 85 (1963) 2782; G. P. Boldrini, A. Umani-Ronchi, Synthesis 1976, 596).