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Molecular structures of (a) [M(PhB(MeIm)3)2]n+ (with M = MnIV, n = 2; M = FeIII, n = 1; M = CoIII, n = 1)30,119,149 and (b) [Fe(btz)3]3+.29 (c) Tanabe–Sugano diagram for the d5 electron configuration in an octahedral ligand field. (d) Single configurational coordinate diagram with key electronic states in [Fe(btz)3]3+.29 Molecular structures of (e) [Fe(Imp)2]+ and (f) [Co(dgpy)2]3+ (X = CH) as well as [Co(dgpz)2]3+ (X = N).51,52
