Abstract:The role‐exchanging concerted torsional motion of two hydrogen atoms in the homochiral dimer of trans‐1,2‐cyclohexanediol was characterized through a combination of broadband rotational spectroscopy and theoretical modeling. The results reveal that the concerted tunneling motion of the hydrogen atoms leads to the inversion of the sign of the dipole moment components along the a and b principal axes, due to the interchange motion that cooperatively breaks and reforms one intermolecular hydrogen bond. This motio… Show more
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