Organic Structures Shapes and Isomerism Part 2Kathy CarriganVersion 42-0185-00-01 Lab Report Assistant Thisdocumentisnotmeanttobeasubstitute foraformallaboratoryreport.TheLabReport Assistantissimplyasummaryoftheexperiment’squestions, diagramsifneeded,anddatatables thatshouldbeaddressedinaformallabreport.Theintentistofacilitatestudents’writing oflab reports by providing this informationin an editable filewhich can be sent to an instructor. Questions Part I Section1 A. Wouldthestructuresyouhaveproducedinstep1beconsideredisomersofoneanother? Explain thebasis foryouranswer. B. Whatarethebond angles and molecular geometryaroundthecarbonatoms? Part I Section2 A. Is this possible with thedouble bond? Describewhatyousee. B. Whatis thebond angle and molecular geometryaroundthe2middle carbonatoms? Part I Section3 A. Whatarethebond angles and molecular geometryaroundthedouble bonded carbons? B. Canyourcis-2-butenemodelbeconvertedintothetrans-2-butenemodelwithoutbreaking bonds? C. The cis- and trans-2-butenesarecalledgeometricisomers.Whyaretheygiventhis name? D. Definethetermstructuralisomer(seeOrganicStructuresPart1)andexplainhowitdiffersfroma geometricisomer. Part I Challenge Questions(required) Indicate whethereachof the following compound pairs are geometric isomers, structural isomers, or not isomers atall. Writethenamesforthecompoundsunder each formula. Names Are these structures isomers? If so what type? CH3 CH3 CH CH3 CH3 CH2 CH2 CH3 Names Are these structures isomers? If so what type? Cl Cl Cl CH3 CH Cl CH2 and CH3 CH CH2 Names Are these structures isomers? If so what type? PartII:AromaticHydrocarbons and Resonance A. Whatis thegeometryof eachof thecarbonsin benzene? B. Draw the structural formula for methylbenzene. (Note: draw the structure using the drawing programandpasteitinhere.Wedonotwant you toscaninthisasapdffile.If youareunable to draw the structure skip it and answer the rest of the question.) Part III: Alkynes A. Constructa model of 1-propyneand drawits structuralformula. Part IV: FunctionalGroups Part IV Section1 A. Constructamodel,usingtheredatomwithtwoprongsforoxygen,thendrawthestructural formulafor1-propanol,C3H7OH. (Thecommonnameispropanol,orpropylalcohol)Whyis oxygenrepresentedbythe“bent”structure? B. Constructamodel,thendrawthestructuralformulafor2-propanol,C3H7OH.(Thecommon name is isopropanol, or isopropyl alcohol). Part IV Section2 A. Construct a model, then draw the structural formula for dimethyl ether, C2H6O. B. Whatrelationshipexistsbetweenethanol,C2H6O,anddimethylether? Youmayneedto draw/constructa model of ethanoltoseethis.
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