Table 2. Comparison of the percentage contributions for various inter­actions in mol­ecules 1 and 2.

Contacts	1	2
H⋯H	51.5	47.6
H⋯C/C⋯H	14.1	17.0
H⋯Br/Br⋯H	10.5	9.6
H⋯Se/Se⋯H	10.1	9.9
H⋯O/O⋯H	6.7	6.1
C⋯C	2.4	3.8
H⋯N/N⋯H	1.1	1.3
Br.·Br	1.0	2.4
O⋯O	1.0	0.9
C⋯O/O⋯C	0.5	0.5
C⋯Se/Se⋯C	0.4	0.4
N⋯Se/Se⋯N	0.3	0.4
Se⋯Se	0.2	0.0
O⋯Br/Br⋯O	0.1	0.0