2009-203Pset2

2009-203Pset2 - Chemistry 203 Problem Set 2 1. Convert the...

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Chemistry 203 Problem Set 2 1. Convert the following names into the corresponding molecular structures. After doing so, check to see if the name of each molecule as given here is in accord with the IUPAC system of nomenclature. If not, name the molecule correctly. a) 2-methyl-3-propylpentane b) 5-(1,1-dimethylpropyl)nonane c) 2,3,4-trimethyl-4-butylheptane 2. Draw structural representations of each of the following molecules: d) trans -2-chloro-1-ethylcyclopropane e) cis -2-chloro-1,1-difluoro-3-methylcyclopentane f) cis -1,3-dichloro-2,2-dimethylcyclobutane 3. Define each of the following terms. (a) Conformation (b) torsional strain (c) steric strain (d) angle strain (e) axial and equatorial bonds in the chair conformation of cyclohexane 4. Provide carefully drawn structural formulas that correspond to each of the following. (a) The sawhorse representation of the least stable conformation of ethane. (b) The Newman projection of the most stable conformation of ethane. (c) The sawhorse representation of the least stable conformation of 1,2-dibromoethane. (d) Newman projection of the most stable conformation of 1,2-dibromoethane. (e) The most stable conformation of methylcyclohexane. 4. Consider rotation around the C-1–C-2 single bond of 1-bromopropane (
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2009-203Pset2 - Chemistry 203 Problem Set 2 1. Convert the...

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