Table 7.
Calculated structural parameters (distance R in Å) and FeP–L bonding energies (Ebond in eV) for selected states of various FeP(L) complexes with the BP functional
| System | State | RCt(N4)⋯N(eq) | RCt(N4)⋯Fe | RFe-N(ax) | Ebond(FeP–L)a |
|---|---|---|---|---|---|
| FeP(Im) | S = 1 | 1.994 | 0.157 | 2.201 | |
| S = 2 | 2.058 | 0.291 | 2.143 | 0.13 (B3LYP)b | |
| S = 0 | 1.984 | 0.150 | 1.906 | 0.52 (BP)c | |
| FeP(1-MeIm) | S = 1 | 1.993 | 0.163 | 2.196 | |
| S = 2 | 2.060 | 0.289 | 2.145 | 0.17 (B3LYP) | |
| S = 0 | 1.984 | 0.151 | 1.908 | 0.56 (BP) | |
| FeP(2-MeIm) | S = 1 | 1.995 | 0.176 | 2.269 | |
| S = 2 | 2.057 | 0.343 | 2.172 | 0.10 (B3LYP) | |
| S = 0 | 1.980 | 0.190 | 1.944 | 0.37 (BP) | |
| Exptld | 2.043 | 0.42 | 2.161 | ||
| FeP(1,2-Me2Im) | S = 1 | 1.995 | 0.182 | 2.264 | |
| S = 2 | 2.057 | 0.331 | 2.162 | 0.09 (B3LYP) | |
| S = 0 | 1.980 | 0.197 | 1.949 | 0.40 (BP) | |
| FeP(4-EtIm) | S = 1 | 1.994 | 0.163 | 2.193 | |
| S = 2 | 2.057 | 0.300 | 2.134 | 0.16 (B3LYP) | |
| S = 0 | 1.984 | 0.152 | 1.908 | 0.56 (BP) | |
| FeP(His) | S = 1 | 1.994 | 0.159 | 2.187 | |
| S = 2 | 2.058 | 0.303 | 2.131 | 0.17 (B3LYP) | |
| S = 0 | 1.984 | 0.148 | 1.909 | 0.58 (BP) | |
| FeTpivPP(2-MeIm) | S = 1 | 1.988 | 0.156 | 2.238 | |
| S = 2 | 2.048 | 0.356 | 2.171 | 0.15 (B3LYP) | |
| S = 0 | 1.975 | 0.198 | 1.950 | 0.40 (BP) | |
| Exptle | 2.033 | 0.399 | 2.095 |
See text for the definition of Ebond.
Bonding energy calculated with B3LYP in the S = 2 state.
Bonding energy calculated with BP in the S = 0 state, as this state is the ground state or nearly the ground state obtained with BP.
X-ray crystal structural data on FeTPP(2-MeIm) (ref. 20).
X-ray crystal structural data on FeTpivPP(2-MeIm) (ref. 22).