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Chiral Molecules

A Chiral Molecule is a type of molecule that is non-superposable over its mirror image. On the other hand, achiral molecules are one that are superposable over its mirror image, as in they are identical to their mirror images. Thus, it can be seen that chirality usually stems from some sort of asymmetry in the carbon-based molecule. Consider the following molecule:

Figure 1: (H, R, COOH, NH2)

The above amino acid is chiral as if you create its mirror image, it can be seen that these are not identical. Thus, in order to separate non-superposable mirror images, there is an important system to help categorize and identify different chiral molecules. The R- and S- configurations were devised to help categorize molecules based on the priority of the substituents bonded to the center atom. So the first step involves orienting the molecule so that the substituent with the least priority (generally, lowest in atomic/molecular weight) is pointing away from the viewer. Then looking at the remaining three substituents: if the priority decreases in a clockwise fashion, then the molecule will be labeled R; if the priority decreases in a counter-clockwise fashion, then the molecule will be labeled S.

Thus, understanding chirality is extremely important as the concept is heavily involved in a multitude of organic reactions.

Glycine as an Achiral Molecule

I would like a proof for that an achiral molecule that consists of two similar components and two other distinct components are always superposable as for example glycine. I would believe I visual proof would be the most easy approach for me. Thank you! An image of glycine is in the attachment as an illustration.

Stereoisomeric Relationships

Z. Afrer an aqueous solution containing Co(OH)3 and three equivalents of alanine, H2NCH(CH3)C02H2, is heated four neutral, six-coordinate compounds having the formula {Co[(H2NCH(CH3)CO2]3} can be isolated. Two of these compounds are red and have nearly identical absorption spectra, which suggests they have the same stereochemica

Stereochemistry of Diols from alkenes.

Please see attached file. Question #1 Give the IUPAC name of the major organic product of the following two-step synthesis. Pay attention to stereochemistry if appropriate. The major organic product of the previous two-step synthesis is ... a. ... chiral and only a single stereoisomer is formed. b. ... a racemic mix

Chirality of Compound Pairs

1. Consider the following ether whose structural formula is: a) Draw the ring in its moststable chair conformation. b) Identify each sterocenter in the molecule. c) Draw different steroisomers of the structure. 2. Identify the following structures as chiral, achiral and/or meso. Decide if the pairs are isomers, stereoisome

Reaction Mechanism

Consider the following molecule and answer the questions related to its structure. a. Determine the R or S configuration for each chiral center. See attached file for full problem description.