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Can facial and meridional isomers be chiral? justify
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- If a molecule contains stereocentres, is it guaranteed to be chiral?Write all possible pairs of Enantiomers and Diastereomers from the following molecules.(use numbers(I;II;III;IV) writing pairs). Give explanation.Identify any chiral centers within the 2 molecules and identify whether each molecule is chiral or archial. If it is chiral, explain whether you expect a single enantiomer or a mixture of enantiomers to be formed.
- To the following statement, answer true or false and explain your answer. Q)All chiral molecules are optically active when pure.with a model of methane (CH4) can the mirror image be superimposed on the original (in regard to Chirality)Most naturally occurring amino acids have chiral centers (the asymmetric a carbon atoms)that are named (S) by the Cahn–Ingold–Prelog convention (Section 5-3). The commonnaturally occurring form of cysteine has a chiral center that is named (R), however.(a) What is the relationship between (R)-cysteine and (S)-alanine? Do they have the oppositethree-dimensional configuration (as the names might suggest) or the same configuration?(b) (S)-Alanine is an l-amino acid (Figure 24-2). Is (R)-cysteine a d-amino acid or anl-amino acid?
- Why don’t molecules that contain a plane of symmetry have a chirality center?Find an example of a chiral molecule in biology whose enantiomers have markedly different functions. Where is the chiral center located, and how can it be identified? Find and include an image of its molecular structure. What function does the active enantiomer play biologically, and how is this function hindered or changed with the other enantiomer? Are there any synthetic considerations for this molecule?Perspective drawings of both entantiomers of CHBrIF. Make models of both enantiomers (make one model then make its mirror image). Can the two models be superimposed? What type of isomerism do these models represent?
- What are the configurations of all chiral centers of the attached molecule? Please state the answer in clear words along with any pictures/reactions.is a chiral quaternary ammonium salt. Provide the two Newman projections (from different side view) of the molecule.Designate the chiral centers of the following molecules and show which one of them is achiral?