Table 3. Hirshfeld contact surfaces, derived ‘random contacts’ and ‘enrichment ratios’ for [Ni(L ^I,II)₂] and [Cu(L ^I,II)₂].

Fingerprint plots of the observed contacts are available in the Supporting information.

	[Ni(L I)2]					[Cu(L I)2]					[Ni(L II)2]					[Cu(L II)2]
	H	C	N	O	Ni	H	C	N	O	Cu	H	C	N	O	Ni	H	C	N	O	Cu
Contacts (C, %)†
H	67.2	–	–	–	–	66.3	–	–	–	–	58.8	–	–	–	–	62.2	–	–	–	–
C	23.9	0.0	–	–	–	24.3	0.0	–	–	–	33.5	0.1	–	–	–	28.9	1.1	–	–	–
N	2.0	0.2	0.0	–	–	2.1	0.2	0.0	–	–	2.3	0.0	0.0	–	–	1.1	1.5	0.0	–	–
O	5.6	0.0	0.0	0.0	–	5.5	0.0	0.0	0.0	–	4.8	0.0	0.0	0.0	–	0.9	1.6	0.0	0.4	–
M	1.2	0.0	0.0	0.0	0.0	1.6	0.0	0.0	0.0	0.0	0.5	0.0	0.0	0.0	0.0	0.8	1.5	0.0	0.0	0.0
Surface (S, %)
	83.6	12.1	1.1	2.8	0.6	83.1	12.3	1.2	2.8	0.8	79.4	16.9	1.2	2.4	0.3	78.1	17.9	1.3	1.7	1.2
Random contacts (R, %)
H	69.9	–	–	–	–	69.1	–	–	–	–	63.0	–	–	–	–	61.0	–	–	–	–
C	20.2	1.5	–	–	–	20.4	1.5	–	–	–	28.8	2.9	–	–	–	28.0	3.2	–	–	–
N	1.8	0.3	0.0	–	–	2.0	0.3	0.0	–	–	1.9	0.4	0.0	–	–	2.0	0.5	0.0	–	–
O	4.7	0.7	0.1	0.1	–	4.7	0.7	0.1	0.1	–	3.8	0.8	0.1	0.1	–	2.7	0.6	0.0	0.0	–
M	1.0	0.1	0.0	0.0	0.0	1.3	0.2	0.0	0.0	0.0	0.5	0.1	0.0	0.0	0.0	1.9	0.4	0.0	0.0	0.0
Enrichment (E)‡
H	0.96	–	–	–	–	0.96	–	–	–	–	0.93	–	–	–	–	1.02	–	–	–	–
C	1.18	0.0	–	–	–	1.19	0.0	–	–	–	1.16	0.03	–	–	–	1.03	0.34	–	–	–
N	1.11	–	–	–	–	1.05	–	–	–	–	1.21	–	–	–	–	0.55	–	–	–	–
O	1.19	–	–	–	–	1.17	–	–	–	–	1.26	–	–	–	–	0.33	–	–	–	–
M	1.20	–	–	–	–	1.23	–	–	–	–	–	–	–	–	–	0.42	–	–	–	–

^†Values were obtained from CrystalExplorer 3.1 (Wolff et al., 2012 ▸).

^‡The enrichment ratios were not computed when the random contacts were lower than 0.9%, as they are not meaningful (Jelsch et al., 2014 ▸).