Hj. Schneider et al., VICINAL DIAMIDES AS LANTHANIDE COMPLEXERS WITH 2 CONFORMATIONAL STATES OF DIFFERENT DIPOLE-MOMENTS - ELEMENTS FOR NEW MOLECULAR SWITCHES, Supramolecular chemistry, 8(3), 1997, pp. 225-229
Vicinal diamides rest in the ground state in an antiparallel orientati
on with a small dipole moment; they are able to bind metal ions like l
anthanide(3+) upon which they change to a parallel orientation with hi
gh dipole moments.