Table 4.

Summary of EPR Data for [Fe(por)(NO₃)] Complexes at 4 and 77 K.^a

Complex	Sample	Temp (K)	Spectrum Appearance	g-values
[Fe(OEP)(NO3)]	Cryst. powder	77	Axial	g⊥ = 5.85
[Fe(OEP)(NO3)]	Cryst. powder	4	Axial	g⊥ = 5.81, g|| = 2.018
[Fe(OEP)(NO3)]	Solution	77	Axial	g⊥ = 5.99, g|| = 2.00
[Fe(OEP)(NO3)]	Solution	4	Axial	g⊥ = 5.86, g|| =1.998
[Fe(TPP)(NO3)]	Cryst. powder	77	Rhombic	g = 7.71, 4.04, 1.78
[Fe(TPP)(NO3)]	Cryst. powder	4	Rhombic	g = 8.5, 4.0, 1.8
[Fe(TPP)(NO3)]	Solution	77	Axial	g⊥ = 5.65, g|| 2.001
[Fe(TPP)(NO3)]	Solution	4	Axial	g⊥ = 5.82, g|| 1.99
[Fe(TpivPP)(NO3)]	Powderb	77	Axial	g⊥ = 5.45, g|| = 1.98
[Fe(TpivPP)(NO3)]	Powderb	4	Axial	g⊥ = 5.54, g|| = 1.99
[Fe(TpivPP)(NO3)]	Solution	77	Axial	g⊥ = 5.65, g|| = 2.00
[Fe(TpivPP)(NO3)]	Solution	4	Axial	g⊥ = 5.71, g|| = 2.00
[Fe(TpivPP)(NO3)]	Cryst. powder	77	Rhombic	g⊥ = 6.44, 3.97, 1.9

^aAll powder samples were prepared from ground single crystals unless otherwise noted. All solution measurements were carried out in frozen CH₂Cl₂.

^bPowder sample of unknown phase.