Concept explainers
Interpretation:The absolute configuration of molecules depicted should be written.
Concept introduction:In order to assign absolute configuration of R and S Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order with the
The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain the lowest priority group at the bottom or lowest priority. If the groups now are arranged are read from highest towards least in clockwise fashion then R is assigned to the stereocenter if the rotation is anticlockwise the S is assigned at the configuration.
Any organic compound must have no plane of symmetry in order to be optically active. The compounds with any plane of symmetry are achiral and optically inactive.
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Organic Chemistry: Structure and Function
- Do the following compounds have the E or the Z configuration?arrow_forwardExplain why the two molecules below cannot inter-convert without breaking the portion of thedouble bond.arrow_forwardUsing your model, construct an energy diagram to show the variation in the free energy of the molecule as the FRONT ATOM is rotated CLOCKWISE from 0º to 360º in 60º increments. In your energy diagram, you should clearly show the relative energies of each conformer.arrow_forward
- What is the configuration of the following compounds?arrow_forwardMolecule A does not absorb between 200-400 nm. Molecule B does absorb between 200-400 nm. Discuss how molecule B absorbs UV and in you explanation discuss the hybridization of the nitrogen atom.arrow_forwardPlease help with row 3: Follow the instructions in each column. Hint for the last column: draw it with a wedge and again with a dash – which gives the correct configuration?arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning