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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: AussieKenDoll on April 05, 2019, 01:23:51 AM

Title: Why does trans-1,2-dichloroethylene doesn't possess an improper rotation (S)?
Post by: AussieKenDoll on April 05, 2019, 01:23:51 AM
Why does trans-1,2-dichloroethylene doesn't possess an improper rotation (S) as there are C2 and sigma h(Horizontal reflection)?
Title: Re: Why does trans-1,2-dichloroethylene doesn't possess an improper rotation (S)?
Post by: mjc123 on April 05, 2019, 04:43:19 AM
Where C2 and σh symmetry elements exist, their combination is equivalent to i (inversion through a centre of symmetry). S2 ≡ i.