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FLUORENE (a-diphenylene methane), C13H16

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Originally appearing in Volume V10, Page 575 of the 1911 Encyclopedia Britannica.

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FLUORENE (a-diphenylene methane), C13H16

FLUORENE (a-diphenylene methane), C13H16 or .(See also:

C6H4)2CH2, a See also:

HYDROCARBON

hydrocarbon found in See also:

COAL

coal-See also:

tar. It is obtained from the higher boiling fractions, after separation of See also:

NAPHTHALENE, C

naphthalene and See also:

ANTHRACENE (from the Greek avOpa, coal)

anthracene, by fractional See also:

DISTILLATION (from the Lat. distillare, more correctly destillare, to drop or trickle down)

distillation, the portion boiling between 290—340° C. being taken. The fluorene is separated from this by placing it in a freezing mixture, and is then redistilled or crystallized from glacial acetic See also:

ACID (from the Lat. root ac-, sharp; acere, to be sour)

acid, or purified by means of its picrate. It may be prepared by distilling diphenylene ketone over See also:

ZINC

zinc dust, or by See also:

HEATING

heating it with hydriodic acid and See also:

PHOSPHORUS (Gr. 4ws, light, sPEpety, to bear)

phosphorus to 1 50—16o° C.; and also by passing the vapour of See also:

DIPHENYL (phenyl benzene), C6H5

diphenyl methane through a red hot See also:

TUBE (Lat. tuba)

tube. It crystallizes in colourless plates, possessing a See also:

VIOLET

violet See also:

FLUORESCENCE

fluorescence, melting at 112—113° and boiling at 293—295° C. By oxidation with chromic acid in glacial acetic acid See also:

SOLUTION (from Lat. solvere, to loosen, dissolve)

solution, it is converted into diphenylene ketone (CsH4)z•CO; whilst on heating with hydriodic acid and phosphorus to 250—260° C. it gives a hydro derivative of See also:

composition C13H22.

End of Article: FLUORENE (a-diphenylene methane), C13H16

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