2021年12月23日 · 1,3-dimethylcyclohexane is not exactly a compound, but three different compounds, depending on the configuration of the chiral centers. Two of them (RR and SS) are enantiomers of each other, and the third one (RS) is meso. Why meso? Well, because it has no enantiomeric forms which couldn't be transformed to each other by single-bond rotations.

2024年11月21日 · Can you explain why 1,4-disubstituted cyclohexanes are not meso, even though they are achiral and “look” meso (i.e., have a plane of symmetry)? An example would be 1,4-dimethylcyclohexane. Reply

2016年10月17日 · Is the compound meso? According to the IUPAC Gold Book, a meso-compound is defined as: A term for the achiral member(s) of a set of diastereoisomers which also includes one or more chiral members. 1,2-Dimethylcyclohexane possesses two diastereomers, one cis and one trans form. The trans form is chiral, but the cis form is achiral, as explained ...

1,3-dimethylcyclohexane is not exactly a compound, but three different compounds, depending on the configuration of the chiral centers. Two of them (RR and SS) are enantiomers of each other, and the third one (RS) is meso. Why meso? Well, because it has no enantiomeric forms which couldn't be transformed to each other by single-bond rotations.

2015年6月2日 · Only the cis isomer of 1,2-dimethylcyclohexane is a meso compound. A meso compound must have at least two chiral centres but still be optically inactive because of an internal plane of symmetry. We see that the cis isomer has chiral carbons at "C-1" and "C-2".

A meso compound is an achiral compound that has chiral centers. A meso compound contains an internal plane of symmetry which makes it superimposable on its mirror image and is optically inactive …

2023年1月23日 · Since the cis isomer has two centers of chirality (asymmetric carbons) and is optically inactive, it is a meso-compound. The corresponding trans isomers also exist as rapidly interconverting chiral conformations. The diequatorial conformer predominates in each case, the (R,R) conformations being mirror images of the (S,S) conformations.

Only the cis isomer of 1,2-dimethylcyclohexane is a meso compound. A meso compound must have at least two chiral centres but still be optically inactive because of an internal plane of symmetry. We see that the cis isomer has chiral carbons at C-1 and C-2 .

2023年9月22日 · The stereoisomer of 1,3-dimethylcyclohexane that is a meso form is cis-1,3-dimethylcyclohexane. Meso compounds are molecules that have multiple stereocenters but are superimposable on their mirror images due to a plane of symmetry.

2018年1月14日 · 1,2-dimethylcyclohexane has two chirality centers. The cis-diastereomer has a plane of symmetry bisecting the ring bond between the two methyl groups and therefore a meso compound.It is not chiral and does not rotate plane-polarized light.The trans-diastereomer exists as a pair of enantiomers.