Mössbauer data and fits obtained for [Fe(TPP)(Hdmpz)] at 3 T, 6 T, 9 T applied magnetic fields. Fitting parameters were D =9.4 cm−1, E/D = 0.29 A/(gnβn) = (−6.8, −6.8, −2.2)T. Euler angles (D relative to Q)(α, β, γ) = (−58, 36, 31)°. Lorentzian FWHM = 0.43 mm/s. Simulations of 3, 6, and 9T spectra at 4.2K assume slow spin relaxation.