Average Fe1–N bond lengths (Å) and volumes (ų) at different states for 1.

1	30 K	30 K532 nm	30 K808 nm
Fe1–NTPA-dipy	2.094(6)	2.191(4)	2.027(8)
Fe1–Ncy	2.056(6)	2.155(4)	2.010(8)
Fe1–Ncy	2.033(7)	2.149(5)	1.991(8)
Fe1–Navg	2.061(3)	2.165(2)	2.009(3)
V	3356.3(14)	3443.8(3)	3359.0(4)