Chemistry of transition-metal vapours. Part III. Formation of complexes with arenes, trifluorophosphine, and nitric oxide

Abstract

Pure, solid bis(cumene) and bis(m-di-isopropylbenzene)chromium were obtained by condensing chromium vapour with the arenes at –196°. Stable complexes Cr(arene)(PF₃)₃ have been made from chromium vapour, PF₃, and the vapour of benzene, hexafluorobenzene, cumene, or mesitylene; the yield of Cr(C₆F₆)(PF₃)₃ was poor. Condensation of iron vapour, PF₃, and C₆H₆ formed Fe(C₆H₆)(PF₃)₂. Manganese vapour condensed with a mixture of NO, BF₃, and PF₃ gave Mn(NO)₃PF₃, but nitric oxide has proved to be a dangerous reagent in metal atom reactions.