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THE object of this investigation was to obtain organo-metallic derivatives of chromium. With this end in view, the anhydrous chloride, CrCl,, was treated with the Grignard reagent, and the product worked up in the usual way. When the anhydrous chloride was added to the ethereal solution of the Grignard reagent, a vigorous reaction took place, but the desired product, an organometallic compound of the type CrR3 (or possibly CrR,Cl or CrRC1,) was not isolated. This is, however, in harmony with the fact pointed out by one of us recently (P., 1914, 30, 4) that elemects

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