gauche effect
atypical situation where groups separated by a torsion angle of approximately 60°, is more stable than 180°
en-US/ˈɡoʊʃ ˈifɛkt/
en-GB/ˈɡəʊʃ ɪˈfɛkt/
atypical situation where groups separated by a torsion angle of approximately 60°, is more stable than 180°