Table 3.
model | N1,2 (Å) | θ1,2 | N3,4 (Å) | θ3,4 | O+z (Å) | O−z (Å) | Ow (Å) | Rsq |
---|---|---|---|---|---|---|---|---|
Square pyramid | 1.97 | 100.9 | 2.04 | 106.8 | 2.23 | --- | --- | 1.19 |
Square pyr. + 4 Ow | 1.98 | 107.8 | 2.09 | 72.09 | 2.34 | --- | 7.4±0.6 | 0.89 |
Split axial | 1.99 | 96.0 | 2.04 | 96.0 | 2.16 | 3.12 | --- | 1.88 |
Split axial + 8 Ow | 1.99 | 89.6 | 1.99 | 98.6 | 2.14 | 3.00 | 4.2±0.3 | 0.52 |
Errors in the metrics of the “final split axial + 4 Ow” model are: Neq ±0.02 Å (ste), ±0.03 Å (sys); O+z, ±0.11 Å (ste) ±0.03 Å (sys); O−z, ±0.13 Å (ste) ±0.04 Å (sys); Ow, ±0.2 Å (ste)±0.1 Å (sys), where “ste” is statistical and “sys” is systematic. The tabulated uncertainty in Ow is the statistical spread in the eight fitted distances. The error in θ is ±3.9°.