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J-coupling and line width analysis. (A) Exchange between bound and free species (15N–CH3CN, H2) and J-coupling definitions. (B) Lineshape analysis of 15N spectra (blue: individual Lorentzians, black: experimental trace, pink: overall fit, red: residual error optimized to rms-noise level). (C) 1H spectra of the hydride region taken under PASADENA conditions.25
