carbon monoxide; iron(+2) cation; methyl propanoate;ferrous; carbon monoxide; methyl propanoate;ferrous; carbon monoxide; propanoic acid methyl ester;ferrous; carbon monoxide; propionic acid methyl ester;Iron, tetracarbonyl[(2,3-.eta.)-methyl-2-propenoate]-;Iron, tetracarbonyl[(2,3-.eta.2)-methyl-2-propenoate]-;Iron, tetracarbonyl[(2,3-.eta.<2>)-methyl-2-propenoate]-
carbon monoxide; iron(+2) cation; methyl propanoate