“…The J ab , J bc , J cd , and J db integrals in the S 0 state have been determined to be −35 (−25), −40 (−50), −69 (−60), and −5 (−10) (cm −1 ), respectively; the J values in the parentheses are determined assuming another assumption for fitting the experimental ENDOR spectra. The corresponding J values for the S 2 state are −180 (−130), −60 (−45), −40 (−32), and −5 (−10) (cm −1 ), respectively31–33, 135–143. The sign of the experimental J values are negative though their magnitude is strongly dependent on the oxidation number of the manganese ion.…”