​ペンタカルボニル鉄

解説鉄に一酸化炭素が配位した錯体。純鉄カルボニル分子としては[Fe(CO)5]，[Fe2(CO)9]，[Fe3(CO)12]があり，純鉄カルボニルイオンとしては[Fe(CO)4]2－，[Fe2(CO)8]2－，[Fe3(CO)11]2－，[Fe4(CO)13]2－がある。このほか他の配位子を含む多数の誘導体が知られている。［ペンタカルボニル鉄(0)］ 化学式Fe(CO)5。酸化鉄(III)を還元して得た粉状の鉄を，一酸化炭素中，200気圧で180～200℃に加熱すると得られる。株式会社平凡社 世界大百科事典 第２版について 情報

使用To make finely divided iron, so-called carbonyl iron, which is used in the manufacture of powdered iron cores for high frequency coils used in the radio and television industry; as antiknock agent in motor fuels; as catalyst and reagent in organic reactions.

一般的な説明A yellow to dark red liquid. Insoluble in water and denser than water. Very toxic by inhalation, ingestion, and skin absorption. Flash point 5°F. Used to make other chemicals.

純化方法It is a pale yellow viscous liquid which is PYROPHORIC and readily absorbed by the skin. HIGHLY TOXIC (protect from light and air). It should be purified in a vacuum line by distilling and collecting in a trap at -96o (toluene-Dry ice slush). It has been distilled at atmospheric pressure (use a very efficient fume cupboard). At 180o/atmospheric pressure it decomposes to give Fe and CO. In UV light in pet ether it forms Fe2(CO)9 (see previous entry). [Hagen et al. Inorg Chem 17 1369 1978, Ewens et al. Trans Faraday Soc 35 6811 1939.]