Table 2. CO bond distances in the 7-propionate group of haem (in ).
The values in parentheses represent the estimated standard deviations derived from least-squares refinement using SHELXL.
| Oxidized form 1 | Oxidized form 2 | Reduced form 1 | Reduced form 2 | |
|---|---|---|---|---|
| CO1 | 1.252 (9) | 1.273 (17) | 1.225 (10) | 1.289 (17) |
| CO2 | 1.251 (8) | 1.278 (16) | 1.252 (9) | 1.237 (19) |