Proceedings 17
Proceedings 17
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anhydrous morphine and 17 grms. phosphorus pentachloride were mixed, and several grm& of oxychloride of phosphorus poured over the mixture. The mixture was left for some hours, with occasional agitation, until solution was complete. It was then diluted with water, and ammonia added.
The precipitate so obtained was slightly washed, dried, and treated with chloroform. On evaporation the chloroform left a non- crystalline residue, from which a platinum salt was prepared. Of this compound '091 grm.... gave 0*16 grm. Pt=» 17*58 per cent The portion of the precipitate undissolved by the chloroform was treated with boiling alcohol, which on evaporation left a partially crystalline coloured residue. This yielded a chloroplatinate of which •1575 grm. gave '0275 grm. Pt= 17*45 per cent (Ci7HieCl3NO)2- Pt Hj 01^= 17*43 per cent Pt.
It would be too much to assume that that is certainly the com- position of the substance obtained, as it is quite conceivably a mix- ture. We anticipated that the two hydroxyls would be replaced by chlorine atoms, but the chlorination seems to have gone further.
What to read after Proceedings 17?
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To quickly assess the difficulty of the text, read a short excerpt:
anhydrous morphine and 17 grms. phosphorus pentachloride were mixed, and several grm& of oxychloride of phosphorus poured over the mixture. The mixture was left for some hours, with occasional agitation, until solution was complete. It was then diluted with water, and ammonia added.
The precipitate so obtained was slightly washed, dried, and treated with chloroform. On evaporation the chloroform left a non- crystalline residue, from which a platinum salt was prepared. Of this compound '091 grm.... gave 0*16 grm. Pt=» 17*58 per cent The portion of the precipitate undissolved by the chloroform was treated with boiling alcohol, which on evaporation left a partially crystalline coloured residue. This yielded a chloroplatinate of which •1575 grm. gave '0275 grm. Pt= 17*45 per cent (Ci7HieCl3NO)2- Pt Hj 01^= 17*43 per cent Pt.
It would be too much to assume that that is certainly the com- position of the substance obtained, as it is quite conceivably a mix- ture. We anticipated that the two hydroxyls would be replaced by chlorine atoms, but the chlorination seems to have gone further.
What to read after Proceedings 17?
You can find similar books in the "Read Also" column, or choose other free books by Royal Society of Edinburgh to read onlineMoreLess
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