Table 1.

Structural characteristics of the ChB interactions in (1)₄(bpen)₅, before and after UV irradiation.

ChB	ChB length [Å]	RR	ChB angle [°]
Before irradiation
NC−Se1⋅⋅⋅N5	2.670(3)	0.77	175.83(9)
NC−Se2⋅⋅⋅N7	2.754(4)	0.80	173.58(9)
NC−Se3⋅⋅⋅N8	2.759(4)	0.75	178.27(9)
NC−Se4⋅⋅⋅N6	2.656(4)	0.77	175.42(9)
After UV irradiation, major component
NC−Se1⋅⋅⋅N5	2.727(11)	0.79	170.52(43)
NC−Se2⋅⋅⋅N7	3.017(14)	0.87	179.50(52)
NC−Se3⋅⋅⋅N8	2.649(15)	0.77	175.38(50)
NC−Se4⋅⋅⋅N6	2.732(12)	0.79	176.38(54)
After UV irradiation, minor component
NC−Se1⋅⋅⋅N5B	2.682(21)	0.78	165.08(57)
NC−Se2⋅⋅⋅N7B	2.640(25)	0.77	174.57(71)
NC−Se3⋅⋅⋅N8B	2.850(26)	0.83	172.55(66)
NC−Se4⋅⋅⋅N6B	2.990(23)	0.87	178.27(63)