Lecture notes for chemical students. Vol. 2, Organic chemistry / by Edward Frankland.

  • Frankland, Edward, 1825-1899.
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: Lecture notes for chemical students. Vol. 2, Organic chemistry / by Edward Frankland. Source: Wellcome Collection.

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    2. Secondary Itadicals. Two secondary monad positive radicals arc Itnown :— tilsttl'roKl.(cMefll . A,„>-..isopropyl VINYL SERIES. General formula... | §(^c;5!;:;)lV The first member of this series, vinyl, has not yet been isolated. ALLYL. C3H3 C3H3 or J C(CMeH)H., \ C(CMc''H)H; H . H II-C—C—C— I I I _c—c—C—II H II H II H H Molecular weiylit =82. Molecular volume | I'l- 1 litre of allyl vapour xoeiglis 41 criths. Sp.gr. 0'6S4. Boils at 59°. Preparation.—By digesting allylic iodide with sodium, and then distilling :— Na. + 2C(CMeH)H,I = Allylio iodide. Allyl. Sodio iodide. Character.—Bromine and iodine unite directly with allyl, producing allylic tetrabromide and tetriodide. In these com¬ pounds the molecule of allyl plays the part of a tetrad radical. In allylic tetrabromide, four latent carbon bonds in the mole¬ cule of allyl have become active, and have united with four atoms of bromine:— r C(CMe'Tl)II,, . t C(CMeH)H, :Allyl. Br, r C[C(CII.,Br)BrII]II, \ C[C(CII,Br)Brll]n; Allylio tetrabromide.