Optical and thermodynamic measurements on fac-Re (CO) 3 (dpknph) Cl in polar non
aqueous solvents revealed the existence of two interlocked conformational forms for fac-Re
(CO) 3 (dpknph) Cl. The equilibrium distribution of the low (α-) and high (β-) energy
conformations is solvent dependent, controlled by the dipole moment of the solvent
molecules and their orientation around the total dipole of fac-Re (CO) 3 (dpknph) Cl. The
interplay between the α-and β-conformations of fac-Re (CO) 3 (dpknph) Cl, allowed …

Optical measurements on fac-Re (CO) 3 (dpknph) Cl in polar non-aqueous solvents in the
presence and absence of NaBH4/KPF6 revealed reversible interconversion between the
high (β-) and low (α-) energy electronic states of fac-Re (CO) 3 (dpknph) Cl. The reversibility
of these interactions and the disturbance of the equilibrium distribution of the low (α-) and
high (β-) energy electronic state upon addition of NaBH4/KPF6 mark improvement in the
optosensing properties of fac-Re (CO) 3 (dpknph) Cl. The optical behavior of fac-Re (CO) 3 …