Conversely, a mirror image of an " achiral " object, such as a sphere, cannot be distinguished from the object.
22.
But if one prolongs the pattern in both directions to infinity, one receives an ( unbounded ) achiral figure which has no axis of symmetry.
23.
A consequence of this is that some aldaric acids are meso forms with no optical activity despite their multiple achiral meso form with no optical activity.
24.
You can get an achiral object from the combination of chiral sub-parts, if you attach the two mirror images across the plane of symmetry.
25.
Both ?-quartz and ?-quartz are examples of chiral crystal structures composed of achiral building blocks ( SiO 4 tetrahedra in the present case ).
26.
The starting material is an achiral triketone and it requires just 3 % of proline to obtain the reaction product, a ketol in 93 % enantiomeric excess.
27.
In 1981, Itsuno and coworkers first reported the use of chiral alkoxy-amine-borane complexes in reducing achiral ketones to chiral alcohols enantioselectively and in high yield.
28.
Chirality may arise in a supramolecular system if one of its component is chiral or if achiral components arrange in a non symmetrical way to produce a supermolecule that is chiral.
29.
In the alanine molecule shown, the ? carbon is achiral; however, most larger amino acids have a chiral \ mathrm { C } ^ { \ beta } atom.
30.
The Sailor Soldiers fight off Chiral and Achiral, but are at a disadvantage until Chibiusa unleashes her power and attacks them after Momoko takes a hit while trying to protect Chibiusa.
