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16 Nov 2019
Experiment 14: Hexaphenylbenzene diphenylacetylene is employed since it is far easier to separate from the desired product in the purification steps DO NO CALE THIS REACTION! Complete the following data your lab notebook, using the correct quantities to be table, in used in the experiment mp/bp, oc MW density, equiv mmol g compound tetraphenyl cyclopentadienone mp, 220. (solid) XXX (Solid) XXX diphenylacetylene silicone oil Procedure tetraphenylcyclopentadienone and 100 mg of In a small test tube, place 100 mg of diphenylacetylene. Add 1 mL of high-boiling silicone oil. Clamp the test tube at a slight angle, facing away from yourself and others. Bring the mixture gently to a boil over a 3 to 5 minute period by heating the test tube with a moving flame of a Bunsen burner. On melting, the reagen dissolve in the hot oil to yield a dark solution. Continue gently boiling for an the additional minutes during which time color fades and tan crystals of hexaphenylbenzene from the solution. Cool tube room temperature and add 4 mL of hexane wit stirring to dilute the silicone oil. Collect the crude product by vacuum filtration washing with mL of hexane, then two 2-mL portions of cold toluene. the hexaphenylbenzene product and calculate the yield. obtain an IR spectrum of the compound. Interpret the spectrum before attaching it to report Data for Hexaphenylbenzene n Lab Notebook: Mass of Product Show calculation: Theoretical Yield
Experiment 14: Hexaphenylbenzene diphenylacetylene is employed since it is far easier to separate from the desired product in the purification steps DO NO CALE THIS REACTION! Complete the following data your lab notebook, using the correct quantities to be table, in used in the experiment mp/bp, oc MW density, equiv mmol g compound tetraphenyl cyclopentadienone mp, 220. (solid) XXX (Solid) XXX diphenylacetylene silicone oil Procedure tetraphenylcyclopentadienone and 100 mg of In a small test tube, place 100 mg of diphenylacetylene. Add 1 mL of high-boiling silicone oil. Clamp the test tube at a slight angle, facing away from yourself and others. Bring the mixture gently to a boil over a 3 to 5 minute period by heating the test tube with a moving flame of a Bunsen burner. On melting, the reagen dissolve in the hot oil to yield a dark solution. Continue gently boiling for an the additional minutes during which time color fades and tan crystals of hexaphenylbenzene from the solution. Cool tube room temperature and add 4 mL of hexane wit stirring to dilute the silicone oil. Collect the crude product by vacuum filtration washing with mL of hexane, then two 2-mL portions of cold toluene. the hexaphenylbenzene product and calculate the yield. obtain an IR spectrum of the compound. Interpret the spectrum before attaching it to report Data for Hexaphenylbenzene n Lab Notebook: Mass of Product Show calculation: Theoretical Yield
Collen VonLv2
11 Feb 2019