A molecular ion of mass of [M] + = 1442.2886 amu, consistent with the empirical formula and isotope pattern of a Mn(III)-Cl complex 11 was detected by ESI-HRMS (Fig. in ESI), while the trivalent state of Mn in this complex could be deduced from its magnetic moment (μeff = 4.61 BM). In fact, the same compound also gradually formed when the decayed samples of 9 in DCM were kept in air-tight cuvettes for several days, as their color gradually changed from brown to green.