Table 1.
1H, 13C and 15N chemical shifts of the peaks produced after 2 h of irradiation (λmax = 365 nm, P = 6.4 mW cm−2, dose = 46.1 J cm−2, 310 K) of complex 15N2-1 (8.6 mm) in presence of 1-methylimidazole (molar ratio 1:1.02) in 90% PBS/10% D2O (Ar-saturated, pH 8.7 (initial)/10.2 (final)), and of the individually synthesized PtII-(1-MeIm) complexes (see Figures 4, 5, 6 and Supporting Information)
| Detected Species | Chemical shift [ppm] |
|||||
|---|---|---|---|---|---|---|
| δ(CH3/CH3) | δ(C2H/C2H) | δ(C4H/C4H) | δ(C5H/C5H) | δ(N1) | δ(N3) | |
| α(t-[PtII(NH3)2(1-MeIm-N3)2]2+) | 3.78/35.02 | 7.99/140.01 | 7.14/128.94 | 7.23/123.47 | 146.42 | 127.48 |
| β(c-[PtII(NH3)2(1-MeIm-N3)2]2+) | 3.76/34.96 | 7.83/139.53 | 7.02/127.57 | 7.16/122.04 | 144.86 | n.d. |
| γ([Pt(1-MeIm-N3)4]2+) | 3.73/35.04 | 7.76/140.08 | 6.85/128.87 | 7.15/123.13 | 146.03 | 131.09 |
| δ | 3.68/34.89 | 7.71/140.02 | 6.87/129.56 | 7.08/122.92 | n.d. | n.d. |
| ε | 3.67/34.99 | 7.64/139.23 | 6.76/128.32 | 7.07/122.98 | 145.35 | 133.82 |
| ζ(1-MeIm) | 3.72/33.73 | 7.63/139.40 | 7.01/128.26 | 7.12/122.10 | 141.74 | 221.08 |
|
| ||||||
| Synthesized Complexes* | ||||||
|
| ||||||
| t-[PtII(NH3)2(1-MeIm-N3)2]2+ | 3.82/35.03 | 8.05/139.94 | 7.19/129.00 | 7.26/123.51 | - | - |
| c-[PtII(NH3)2(1-MeIm-N3)2]2+ | 3.73/34.96 | 7.78/139.55 | 7.04/128.55 | 7.16/123.19 | - | - |
| [Pt(1-MeIm-N3)4]2+ | 3.73/35.04 | 7.77/139.93 | 6.86/128.81 | 7.16/123.05 | - | - |
*
In D2O.