J . Phys. Chem. 1987,91, 1760-1764
1760
expected from these simple considerations. The matrix element of the spin-orbit coupling involving two-center terms was estimated to be at most a few percent of that involving one-center term$ I(3nn*I@i)!So)12/1 ( 3nn*(@A)ISo)125 0.03. The possibility that a large deviation of the fine structure axes from the molecular = 0.4 and 0 = 32')' occurs is excluded on axes (tan2 B = k;'/k: the basis of the results of the angular dependence of the TREPR signals (Figure 6), dominant isc to T, ( K , >> K J , and k:(O-0) >> k;(O-O). As discussed above, the k;r 0.4k; and k:(O-0)
