Table 1.
IR Bands for the CN-protected Species [H3(BArF3)2]− and [H4(BArF3)2]− as well as [NiFe]-H2ase Enzymes in the Ni-R State,21 and Other Ni-R Models.10
| Compound | νCN (cm−1) | νCO (cm−1) |
|---|---|---|
| Ni-R state, A. vinosum | 2072, 2059 | 1936 |
| Ni-R state, D. gigas | 2073, 2060 | 1940 |
| Ni-R state, D. fructosovorans | 2074, 2060 | 1938 |
| Ni-R state, D. vulgaris | 2074, 2061 | 1948 |
| [(CO)(CNBArF3)2Fe(H)(pdt)Ni(dppe)]−([H3(BArF3)2]−) | 2162, 2137 | 1963 |
| [(CO)(CNBArF3)2Fe(H)(pdt)Ni(dcpe)]− ([H4(BArF3)2]−) | 2158, 2131 | 1952 |
| [(CO)2(PPh3)Fe(H)(pdt)Ni(dppe)]+ | - | 2016, 1964 |