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Is this formula for number of optical isomers correct?

Try to use these formulas for finding number of stereoisomers for a given compound: Geometrical Isomers: If n is odd: $2^{n-1}+2^{\frac {n+1}{2}-1}$ If n is even: $2^{n-1}+2^{\frac {n}{2}-1}$ ...
anonymous_user's user avatar
3 votes

Stereochemical relationship of molecules including double bond configuration and absolute configuration

Diastereomers, by definition, are stereoisomers that are not enantiomers, so you're right they can't be both. I think you might be confused because you are trying to apply a simplified heuristic (...
Randy Lambreghts's user avatar
4 votes

If the substituents are distinguishable, is it possible to prioritize them using the CIP rules?

Blue Various: Per your request, I offer the following examples. Consider the D-pentoses ribose 1, xylose 4 and arabinose 5. Each one has stereodescriptors in uppercase letters (R/S) at $\ce{C2, C3 and ...
user55119's user avatar
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6 votes

Does a chiral allene have stereogenic centres?

Chirality is a hypernym for the observation that an object can not be superimposed to its mirror image. Most frequently, examples of chirality in organic chemistry are caused by the spatial ...
Buttonwood's user avatar
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7 votes

Does a chiral allene have stereogenic centres?

The definition of "stereogenic centre" is unhelpful and can be confusing The large majority of chiral molecules are chiral because a carbon in them has 4 different things attached to it (...
matt_black's user avatar
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