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For questions about conformational isomerism. Use this tag alongside [stereochemistry].

2 votes

Is there a definition of rotatable bond?

The IUPAC Gold Book states at least somthing to free rotation: free rotation (hindered rotation, restricted rotation) In a stereochemical context the rotation about a bond is called 'free' when the r …
pH13 - Yet another Philipp's user avatar
8 votes

Which conformations of 2,3-dimethylbutane are more stable?

The correct arrangement (from least stable to most stable) is probably: $4 > 2 > 3 \gtrapprox 1$ based on my calculations for the four gas phase rotamers you can see in the figure below. Your reaso …
pH13 - Yet another Philipp's user avatar
12 votes
1 answer
450 views

Trying to understand SMILES(?) patterns

In the example calculation from the conformer search package fafoom is a mysterious pattern that I'd like to understand. The SMILES code of the given example structure is: CC(=O)N[C@H](C(=O)NC)C T …
pH13 - Yet another Philipp's user avatar