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term Archircal
The ________ refers to an object that lacks chirality; an object that has no handedness.
Atropisomers
________ are isomers that lack a chiral center yet do not interconvert due to impeded rotation.
chiral center
The term atropisomers refers to enantiomers that lack a(n) ________ and differ because of hindered rotation.
plane of symmetry
Because there is a(n) ________ when all four carbons are planar, the anti isomer is achiral.
Molecules
________ are small things with sizes ranging from few to hundreds of Angstroms, but they have distinct forms and geometries, as covered in the preceding two chapters.
significant nonbonded interactions
There are ________ in the planar conformer due to the massive groups on the rings, and the twisted forms illustrated have much lower energies.
mirror image
A(n) ________ is an object's reflection in a mirror.
