Table 1.
Selected spectroscopic data for heterobimetallic bis(μ-oxo) complexes
| Complex | UV-Vis λmax (ε)a | Raman Shift (18O)b |
|---|---|---|
| LMe2Cu(μ-O)2Pd(PPh3)2c | 448 (∼5900) | 660 (631) |
| LMe2Cu(μ-O)2Pt(PPh3)2d | 450 (∼5600) | 628,613 (594) |
| [(Me4pda)Cu(μ-O)2Pd(PPh3)2]OTfe | 472 (∼2800) | 610 (580) |
| [(Me4pda)Cu(μ-O)2Pt(PPh3)2]OTfe | 483 (∼2700) | 595 (569) |
| [(Me4chd)Cu(μ-O)2Pd(PPh3)2]PF6e | 463 (∼3500) | 640,616 (600) |
| [(Me4chd)Cu(μ-O)2Pt(PPh3)2]PF6e | 457 (∼3600) | 647,616 (603) |
| [(iPr3tacn)Cu(μ-O)2Pd(PPh3)2]SbF6e | 458 (∼2500) | 630/f |
| [(iPr3tacn)Cu(μ-O)2Pt(PPh3)2]SbF6e | 462 (∼3000) | 628 (601,585) |
a
Measured in solution at -80 °C. Units: λmax = nm, ε = M-1cm-1 per complex.
b
Measured as frozen solutions at -196 °C with λex = 457.9 nm. Units: cm-1.
c
Solvent = THF.
d
Solvent = 4:1 v/v CH2Cl2/THF.
e
Solvent = CH2Cl2.
f
18O-isotope data not collected.