Topicity is the relation between two atoms or groups within a molecule. If atoms
ID: 1059873 • Letter: T
Question
Topicity is the relation between two atoms or groups within a molecule. If atoms or groups are equivalent, the molecule or bonds of a molecule can be rotated so that they are indistinguishable. If they are enantiotopic they are mirror images of each other but not equivalent. If they are diastereotopic they are connected in the same fashion but not equivalent or enantiotopic. If they are constitutional heterotopic, they are connected differently in a molecule.
Answer whether atoms or groups of the given topicity are indistinguishable by NMR (symmetric environment) and/or by organisms (asymmetric environment).
Equivalent atoms or groups are indistinguishable by organisms.
Diastereotopic atoms or groups are indistinguishable by organisms.
Constitutional heterotopic atoms or groups are indistinguishable by organisms.
Enantiotopic atoms or groups are indistinguishable by organisms.
Enantiotopic atoms or groups are indistinguishable by NMR.
Constitutional heterotopic atoms or groups are indistinguishable by NMR.
Equivalent atoms or groups are indistinguishable by NMR.
Diastereotopic atoms or groups are indistinguishable by NMR.
Equivalent atoms or groups are indistinguishable by organisms.
Answer 1Choose...truefalseDiastereotopic atoms or groups are indistinguishable by organisms.
Answer 2Choose...truefalseConstitutional heterotopic atoms or groups are indistinguishable by organisms.
Answer 3Choose...truefalseEnantiotopic atoms or groups are indistinguishable by organisms.
Answer 4Choose...truefalseEnantiotopic atoms or groups are indistinguishable by NMR.
Answer 5Choose...truefalseConstitutional heterotopic atoms or groups are indistinguishable by NMR.
Answer 6Choose...truefalseEquivalent atoms or groups are indistinguishable by NMR.
Answer 7Choose...truefalseDiastereotopic atoms or groups are indistinguishable by NMR.
Explanation / Answer
equivalent atoms or groups are indistinguishable by organisms. Answer true Diastereotopic atoms or groups are indistinguishable by organisms. Answer false Constitutional heterotopic atoms or groups are indistinguishable by organisms. false Enantiotopic atoms or groups are indistinguishable by organisms. Answer false Enantiotopic atoms or groups are indistinguishable by NMR. Answer true Constitutional heterotopic atoms or groups are indistinguishable by NMR. Answer false Equivalent atoms or groups are indistinguishable by NMR. Answer true Diastereotopic atoms or groups are indistinguishable by NMR. Answer false
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