lesson 1 midterm chirality Flashcards
have the same molecular formula but different structural
Isomers
have the same molecular formula and the same connectivity of atoms, but differ in the spatial arrangement
stereoisomers
Nonsuperposable mirror images are
enantiomers
Objects that are not superposable on
their mirror images are
chiral
chiral (from
the Greek: ____).
cheir, hand
A carbon with four different groups
bonded to it is called a _
stereocenter
f an object and its mirror image are
superposable, they are identical and
there is no possibility of enantiomerism
achiral
note:kapag may stereocentr auto chiral na yun
note:kapag may stereocentr auto chiral na yun
Objects that are nonsuperposable on their mirror images are ___ (they show handedness)
chiral
Objects that are superposable on their mirror images are ___ (without chirality)
achiral
is a way to distinguish between
enantiomers without having to draw them and
point to one or the other
R,S system
the
maximum number of possible stereoisomers
is
2n
stereoisomers that are not
mirror images
diastereomers
light waves vibrating in all
planes perpendicular to its direction of
propagation.
Ordinary light
light waves
vibrating only in parallel planes.
Plane-polarized light
an instrument for measuring
the ability of a compound to rotate the
plane of plane-polarized light.
Polarimeter
showing that a
compound rotates the plane of plane-
polarized light.
Optically active
clockwise rotation of the
plane of plane-polarized light
Dextrorotatory
counterclockwise rotation of
the plane of plane-polarized light.
Levorotatory
the observed rotation of an
optically active substance at a concentration of 1 g/mL in a sample tube 10 cm long.
Specific rotation
Chymotrypsin has 251 stereocenters.
Chymotrypsin
