QuestionConformational analysis / haloethanes
Consider the following statements regarding haloethanes :
Statement 1 : Chloroethane and iodoethane have similar barrier to rotation around C1 – C2 bond (13.4 – 15.5 kJ/mol) despite the fact that the size of the halogen increases down the group in periodic table.
Statement 2 : The C – Cl bond in chloroethane is much longer than C – I bond in iodoethane.
Which one of the following is correct in respect of above statements ?
- (a) Both statement 1 and statement 2 are true and statement 2 is the correct explanation of statement 1.
- (b) Both statement 1 and statement 2 are true but statement 2 is not the correct explanation of statement 1.
- (c) Statement 1 is true but statement 2 is false.
- (d) Statement 1 is false but statement 2 is true.
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