Table 1. Bond distances and angles for the [Fe(bpy′)₃]²⁺ complexes and [Fe(terpy)₂]²⁺.

Complex	Fe–N distance (Å)	Cis N–Fe–N angle (°)	Trans N–Fe–N angle (°)	Ref.
[Fe(bpy)3](PF6)2	1.9670 ± 0.0004	81.86–94.31	174.61	17
[Fe(dmb)3](PF6)2	1.967 ± 0.006	80.92–97.52	173.80–176.12	This work
[Fe(dtbb)3](PF6)2	1.957 ± 0.001	81.06–95.84	172.62–175.5	18
[Fe(terpy)2](PF6)2	1.881 ± 0.002	80.82–99.97	161.97–178.83	This work
	1.976 ± 0.005