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Influence of acid, base and zinc on the UV-visible spectra of 1.a
| λmax / nm (ε) /L?mol-1?cm-1 | |||
|---|---|---|---|
| CF3CO2H | DBUb | CH3OH-Zn(OAc)2c | CH3OH-Zn(OAC)2 + NH4OHd |
| 537 (52,900) | 615 (41,300) | 586 (20,200) | 454 (13,000) |
| 324 (28,100) | 355 (24,000) | 376 (19,300) | 417 (14,000) |
| 312 (21,500) | 276 (25,400) | ||
Solutions are 1 × 10-5 M in 1.
Contains 385,000 equivs DBU.
Contains 1 equivalent of Zn(OAc)2.
With 1 mole equivalent of added conc. NH4OH.
