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Cyclopentadienylindium(I) : ウィキペディア英語版 | Cyclopentadienylindium(I)
Cyclopentadienylindium(I), C5H5In, is an organoindium compound containing indium in the +1 oxidation state. Commonly abbreviated to CpIn, it is a cyclopentadienyl complex with a half-sandwich structure. It was the first (1957) low valent organoindium compound reported. ==Preparation and chemistry== CpIn can be readily prepared by reacting indium(I) chloride with cyclopentadienyllithium: :InCl + CpLi → CpIn + LiCl InCp reacts with BF3, BCl3, BBr3, BI3 and trimethylborane B(CH3)3 to form adducts, e. g.: :CpIn + BF3 → CpIn.BF3 In these adducts the bonding of the Cp ligand to the indium atom changes from η5 (π complexing) to η1 (σ bonding). Salts containing the InX2− anion containing indium in the +1 oxidation state have been prepared, for example: :CpIn + HCl + N(Et4)Cl → N(Et4)InCl2+ C5H6
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