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. Author manuscript; available in PMC: 2010 Sep 8.
Published in final edited form as: Chemistry. 2009;15(7):1588–1596. doi: 10.1002/chem.200802206

Figure 1.

Figure 1

1D 14N{1H} NMR spectra of complex 1 (12.6 mm in 90% PBS/10% D2O, Ar-saturated, initial pH 7.4) a) in the dark, b) after 10 min of irradiation (λmax = 365 nm, P = 7.3 mW cm−2, dose = 4.4 J cm−2) at 310 K, c) after 2 h of irradiation (λmax = 365 nm, P = 7.3 mW cm−2, dose = 56.6 J cm−2, final pH 10.1) at 310 K. d) 1D 14N{1H} NMR spectrum of complex 15N2-1 (14.8 mm in 90% H2O/10% D2O, Ar-saturated, initial pH 7.4) after 2 h of irradiation (λmax = 365 nm, P = 7.2 mW cm−2, dose = 52.0 J cm−2, final pH 9.9) at 310 K.

Assignments: a, b, c, coordinated azido ligand (δ = 353.3 (PtIV-NNN), 227.4 (PtIV-NNN), 160.5 ppm (PtIV-NNN)) as labeled in structure; a’, b’, free azide (N3−; δ = 76.9 (NNN), 225.7 ppm (NNN)); d, chemical shift consistent with t-{N-PtIV-NH3} species (δ = −40.8 ppm); d’, d”, chemical shifts consistent with t-{N/O-PtIV-NH3} species (δ = −40.9 ppm, −50.8 ppm); e’, free ammonia (NH3; δ = −20.9 ppm); f’, chemical shift consistent with t-{N/O-PtII-NH3} species (δ = −69.6 ppm).