Table 1. Comparative Ir—CPCP and Ir—CCO bond lengths (Å) of different [Ir(CO)ClH(PCP)] complexes.
| PCP ligand or backbone (charges are omitted) | PCP central carbon atom | Ir—CCO | Ir—CPCP | Reference |
|---|---|---|---|---|
| C6H3-1,3-[OPR 2]2 | sp 2 | 2.045 (3) | 1.949 (4) | Goldberg et al. (2015 ▸) |
| C6H3-1,3-[OPR 2]2 | sp 2 | 2.057 (3) | 1.913 (4) | Goldberg et al. (2015 ▸) |
| C6H3-1,3-[OPR 2]2 | sp 2 | 2.071 (2) | 1.921 (3) | Goldberg et al. (2015 ▸) |
| C(NCH2PR 2)2C10H6 | NHC | 2.078 (4) | 1.904 (5) | Hill & McQueen (2012 ▸) |
| benzotropylium | alkylidene | 2.082 | 1.929 | Leis et al. (2014 ▸) |
| tropylium | alkylidene | 2.093 (5) | 1.916 (5) | Winter et al. (2005 ▸) |
| C6H3-1,3-[P(CF3)2]2 | sp 2 | 2.103 (2) | 1.952 (3) | Adams et al. (2011 ▸) |
| C3H3-1,2-[OPR 2]2 | sp 3 | 2.126 (8) | 1.880 (7) | Ruhland & Herdtweck (2005 ▸) |
| CH(NCH2PR 2)2C10H6 | sp 3 | 2.141 (5) | 1.904 (6) | Hill & McQueen (2012 ▸) |
| C(dppm)2 | CDP | 2.157 (5) | 1.891 (6) | this work |
| cyclohexyl | sp 3 | 2.159 (4) | 1.909 (5) | Jonasson et al. (2015 ▸) |
| trypticene | sp 3 | 2.163 (2) | 1.895 (2) | Azerraf & Gelman (2009 ▸) |
| cyclohexyl | sp 3 | 2.165 (5) | 1.906 (6) | Mayer et al. (1993 ▸) |
| trypticene | sp 3 | 2.193(3 | 1.898 (3) | Azerraf & Gelman (2009 ▸) |
| CH(dppm)2 | protonated CDP | 2.207 (3) | 1.874 (4) | this work |
| cycloheptatrienyl | sp 3 | 2.25 (2) | 1.78 (1) | Nemeh et al. (1998 ▸) |