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外観
暗い緑色～暗い青色～黒色粉末～結晶
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解説
ビス(η5-シクロペンタジエニル)ニッケル(Ⅱ)ともいう．Ni(C5H5)2の組成式をもつニッケル化合物．ジエチルアミンのような塩基の存在下でシクロペンタジエンと塩化ニッケル(Ⅱ)とを反応させることにより合成される．フェロセンと同様，ニッケル原子が二つのシクロペンタジエニル環にはさまれた構造をしている．固体．融点171～173 ℃．ニッケロセンはフェロセンに比べてシクロペンタジエニル環と金属との結合距離が長く，フェロセンより不安定で化学反応性に富み，環への付加反応を受けやすい．[CAS 1271-28-9]
森北出版「化学辞典（第2版）
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使用上の注意
不活性ガス封入
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化学的特性
Nickelocene is a solid crystalline substance of dark green
color, insoluble in water or carbon tetrachloride, slightly
soluble in alcohol and liquid ammonia, and readily soluble in
nonpolar organic solvents.
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使用
Nickelocene is obtained through reacting nickel halides with
sodium cyclopentadienide. It is used as a catalyst or as a
complexing agent.
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一般的な説明
Dark liquid in an 8-10% solution in toluene. Insoluble in water.
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空気と水の反応
Highly flammable. The neat material is sensitive to air. . Insoluble in water.
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反応プロフィール
Organometallics, such as NICKELOCENE, are reactive with many other groups. Incompatible with acids and bases. Organometallics are good reducing agents and therefore incompatible with oxidizing agents. Often reactive with water to generate toxic or flammable gases.
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危険性
Toxic by inhalation and skin contact, a carcinogen (OSHA).
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健康ハザード
ACUTE/CHRONIC HAZARDS: NICKELOCENE can be absorbed through the skin.
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火災危険
NICKELOCENE is flammable.
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安全性プロファイル
Confirmed carcinogen
with experimental carcinogenic,
neoplastigenic, and tumorigenic data. Poison
by intraperitoneal and intramuscular routes.
Moderately toxic by ingestion. When heated
to decomposition it emits acrid smoke and
irritating fumes. See also NICKEL
COMPOUNDS.
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純化方法
Dissolve the complex in Et2O, filter and evaporate in a vacuum. Purify it rapidly by recrystallisation from pet ether using a solid CO2/Me2CO bath, m 171-173o(in an evacuated tube). Also purify it by vacuum sublimation. [Wilkinson et al. J Am Chem Soc 76 1970 1954, Beilstein 16 IV 1831.]
