thanks I hope someone clarifies please. It lacks the internal mirror plane. The upper right compound has a plane of symmetry passing through the central H & OH groups. A couple of EK chemistry questions involved being able to identify meso compounds when it is not very obvious. These particular traits lead to specific qualities that meso compounds do not share with most other stereoisomers. Am I wrong or the question? Identify the R and S stereochemistry at each chiral centre. trans-1,2-dichlorocyclohexane is not a meso compound. Typically, you can only have diastereomers when the molecule has two or more chiral centers. But I see no plane of symmetry here. 28 and 29 are two meso compounds. They can also have a point of symmetry. Identify the meso compounds. The maximum number of possible stereoisomers that a molecule can have is a function of 2 n, where n is the number of chiral centers in the molecule. To identify a chiral compound, you look for two or more chiral centres and an internal plane of symmetry. Correct me if I am wrong, but it seems like if you can rotate the bonds in any way that ends up with the "obvious" intramolecular mirror image, then it is a meso … If you know the R,S notation, you can use this procedure. I am still a first year student; I was asked in the exam to identify the meso comound out of some choices. Identify The Meso Compounds. Meso compounds need not only have a plane of symmetry. One such quality is the internal mirror plane. Note that the mirror planes can bisect atoms. It has two chiral centres and an internal plane of symmetry. See the answer. The upper left compound has a point of symmetry at the centre of the central C-C bond. The two structures on the right are meso compounds, because the top half is a mirror image of the bottom half. Sorry if the question was super silly. cis-1,2-dichlorocyclohexane is a meso compound. Expert Answer 100% (52 ratings) Previous question Next question Get more help from Chegg. If 2 chiral centres, R,S = S,R = meso. The answer key said that the compound below is meso. A meso compound is a molecule with multiple stereocenters that is superimposable on its mirror image. I am unsure how to identify the meso compounds, please help and explain! Select all that apply. Is there a trick to visualizing these? Therefore, a molecule with five chiral centers can have up to 2 5 or 32 possible stereoisomers! This problem has been solved!

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