Proceedings of the American Academy of Arts and Sciences Volume 15, No. 7

Proceedings of the American Academy of Arts and Sciences Volume 15, No. 7

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1880 edition. Excerpt: ...allowing an ethereal solution of the free base to evaporate in the air, forms small white crystals; melting-point, 95; and is soluble in water and alcohol. The chloride, made by adding hydrochloric acid to the carbonate, crystallizes in white radiating needles, or from alcohol in small curled needles; melting-point, 208; and is soluble in water and alcohol. The chlorplatinate, (C6II4BrCH2NH, )2PtCl6, is precipitated on adding chlorplatinic acid to the free base; an analysis gave 0.1990 gr. of substance gave 0.0505 gr. Pt. Calculated for C7H6BrNII8.2PtCl6. Found. Platinum 25.i 6 25.38 It forms indistinct orange-yellow needles, sparingly soluble in water, decidedly so iu alcohol, and insoluble in ether. The Diorthobrombenzylamine was made by treating the chlorplatinate with sulphuretted hydrogen, washing the chloride out of the platinic sulphide with hot alcohol, and precipitating the free base with sodic hydrate from the solid chloride. In this way an oil was obtained, which solidified after some time in well-marked rhombic crystals, with an agreeable smell, melting at 36, and soluble in all the ordinary solvents, with the exception of water. Diorthobrombenzylamine Chlorptatinate, (CliII4BrCII2).)NIT2l2PtCl6, prepared as already described, was purified by washing with alcohol and water, dried at 70, and analyzed. 0.5840 gr. of the salt gave 0.1030 gr. Pt. Calculated for (CsHf.Brl.2NHPtCle. Found. Platinum 17.58 17.66 A yellow obscurely crystalline precipitate, slightly soluble in water and alcohol, insoluble in ether. The chloride made by adding hydrochloric acid to an alcoholic solution of the free base separates out as the alcohol evaporates in groups made up of a few radiating white needles, which melt at 166, are but slightly soluble more

Product details

  • Paperback | 126 pages
  • 189 x 246 x 7mm | 240g
  • United States
  • English
  • black & white illustrations
  • 1236807871
  • 9781236807878