Newman projection worksheet PDF

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Practice with Newman Projections for Organic Chemistry...

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Chapter(3:( Newman(Projection(Worksheet( ( ( 1.#Draw#the#Newman#Projections#from#the#following#Perspective#(dash/wedge# structures:# # # Br Cl

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eye # ( ( ( 2.(Draw(the(most(stable(Newman(Projection(of(1>brompropane(looking(down( the(C1(to(C2(bond( ( Step%1%–%Draw%the%structure%(bond5line%may%be%better)%and%identify%Carbon%1%ad% Carbon%2%based%on%IUPAC%naming%system.% % % % % % % Step%2.%%%Identify%the%three%groups%attached%to%Carbon51%and%the%three%groups% attached%to%Carbon52% % % % % %

Step%3.%%Now%draw%the%Newman%projection:%%The%most%stable%conformation%will%have% the%largest%groups%as%far%from%each%other%as%possible.% %

% % % ( ( Now(try(these(problems:( ( 1. Draw%the%following%Newman%Projections:% a. An%eclipsed%Newman%projection%for%C15C2%bond%of%pentane% % % % % % % % % % % b. A%staggered%Newman%projection%of%C35C4%of%2,55dimethylhexane% % % % % % % % % % % % % c. A%Gauche%Newman%projection%for%the%C45C5%bond%of%35methyl%octane% % %

% % % % % 1.%Sighting%along%the%C25C3%bond%of%2,35dimethylbutane%draw%the%Newman% projections%for:% A. The%most%stable%conformer% B. The%least%stable%conformer% % % % % 2.%Label%your%conformers%at%staggered%or%eclipsed% % % % 3.%Calculate%the%total%energy%costs%for%the%strain%for%the%least%stable%and%for%the%most% stable%conformer.%(Use%the%table%below%for%the%energy%values)% %

Interaction% H5H%eclipsed% H5CH3%eclipsed% CH35CH3%eclipsed% CH35CH3%gauche% % % Most%stable:% % % % % % % % % % Least%stable:% % % % % % % %

Energy%Cost% 4.0%kJ/mol% 6.0%kJ/mol% 11%kJ/mol% 3.8%kJ/mol%...