terms – Chemistry Flashcard

cis
same side of pi bond
trans
opposite side of pi bond
E
highest priority groups on opposite sides of pi bond
Z
highest priority groups on same side of the pi bond
enatiomer
two chiral isomers
stereogenic center
chiral center
dextrorotatory
chiral molecule that polarizes light clockwise
lavorotatory
chiral molecule that polarizes light c-clockwise
R
right-hand chiral center
S
left hand chiral center
diastereomers
sterioisomers that are not enantiomers
Racemic
equal mix of S and R enantiomers
enantiomeric excess
% of one type of enantiomer greater than another (ie – 10%/90% == 80% enatiomeric excess)
meso isomers
molecules with 2 apparent steriogenic centers, but w/ a plane of symmetry
conformational isomers
molecules that differ by rotation around a single bond
eclipsed conformation
bond w/ 0degree conformation angle
staggered conformation
bond w/ conformational angle of 60 degrees
torsional strain
electric repulsion of electrons when bonds overlap
steric strain
physical interation of overlapping groups on a conformal bond
syn
conformation where two groups overlap (0 degrees)
anti
staggered conformation with two groups 180 degrees from each other
gauche
conforman w/two groups seperated by 60 degrees
angle strain
bonds bent b/c of a cyclic compound

Get instant access to
all materials

Become a Member