Table 6.
Properties of Heterobimetallic LCu-(μ-O)2-M Complexes
| compound | L | M | solvent | UV–vis λmax (nm) (ε, M−1 cm−1) | Raman (exp, cm−1) ν(CuMO2) (18O) | ref |
|---|---|---|---|---|---|---|
| 73a | L4c | Pd(PPh3)2 | THF | 448 (5900) | 660 (631) | 334 |
| 73b | L4c | Pt(PPh3)2 | 4:1 CH2Cl2:THF | 450 (5600) | 628, 613 (594) | 334 |
| 73c | L10a | Pd(PPh3)2 | CH2Cl2 | 472 (2800) | 610 (580) | 334 |
| 73d | L10a | Pt(PPh3)2 | CH2Cl2 | 483 (2700) | 595 (569) | 334 |
| 73e | L6a | Pd(PPh3)2 | CH2Cl2 | 463 (3500) | 640, 616 (600) | 334 |
| 73f | L6a | Pt(PPh3)2 | CH2Cl2 | 457 (3600) | 647, 616 (603) | 334 |
| 73g | L20b | Pd(PPh3)2 | CH2Cl2 | 458 (2500) | 630 | 334 |
| 73h | L20b | Pt(PPh3)2 | CH2Cl2 | 462 (3000) | 628 (601, 585) | 334 |
| 71 | L2d | Ni(L81) | THF | 499 (8300) | 625 (595) | 167 |
| 74 | L23b | Ni(L2d) | THF | 895 (5000) | 625 (595) | 335 |
| 75 | L4c | Ge(N(SiMe3)2)2 | toluene | 440 (4400) | 578 (559, 546) | 168 |