Table 1 Summary of the fundamental properties of C1 and C2
From: Energy-efficient CO2/CO interconversion by homogeneous copper-based molecular catalysts
Complex | Optical absorbance [λ/nm (ε in M−1cm−1)] (solvent) | FTIR spectraa,b [Band/cm−1 (assignment)] | Reduction potential (V vs. Fc+/Fc) | EPR for Cu(II)-complexes | |
|---|---|---|---|---|---|
g⊥ | g|| | ||||
C1 | 360 (25000), 580 (3929), 700 (907) (DMF) 345 (28000), 577(3548), 700(905) (Water) | 1629 (νC=C/C=N) (s) 1594 (νC=C/C=N) (s) 1380 (νN=N) (m) 1110 (νClO4-) (s) | -0.26 (CuII/I), −1.05 (L)c, −1.45 (L), −1.65 (L), −1.95 (L) | 2.06 | 2.27 |
C2 | 425 (26500), 601(5860), 739 (1233) (DMF) 425 (27500), 583 (6448), 738(1699) (Water) | 3440 (νN-H) (s) 3255 (νN-H) (s) 1625(νC=N) (s) 1482 (νC=C/C=N) (s)1452 (νC=C/C=N) (s) 1363 (νN=N) (m) | −0.05 (CuII/I), −1.01 (L), −1.33 (L), −1.80 (L) | 2.07 | 2.28 |
