FIGURE 3.

Experimental (solid lines) and simulated (dotted lines) ¹H ENDOR spectra of in H₂O, at 35 GHz, at 12 different magnetic field positions of the EPR spectrum (see arrows in Fig. 2 a). In the fitting of the spin Hamiltonian to the data the frequency range between 51.5 MHz and 55.0 MHz was excluded. The H-bond ENDOR lines L₁, L₂, L₃ are labeled in (B₄). The hfc splitting A_z is shown by an arrow in (B₁₂). Experimental conditions: T = 80 K, MW power = 3 × 10⁻⁶ W, and frequency modulation (FM) = ±140 kHz at a rate of 947 Hz. Number of scans per position: 600. Scan time: 4 s.