Table 2. Experimental details.

Crystal data
Chemical formula	(C34H41N4Se)2[Hg(CNSe)4]
M r	1789.84
Crystal system, space group	Monoclinic, C2/c
Temperature (K)	100
a, b, c (Å)	12.7788 (15), 27.276 (3), 20.180 (3)
β (°)	95.591 (2)
V (Å3)	7000.4 (15)
Z	4
Radiation type	Mo Kα
μ (mm−1)	5.37
Crystal size (mm)	0.24 × 0.23 × 0.19
Data collection
Diffractometer	Bruker APEXII CCD
Absorption correction	Multi-scan (SADABS; Bruker, 2002 ▸)
T min, T max	0.267, 0.336
No. of measured, independent and observed [I > 2σ(I)] reflections	46553, 9030, 8196
R int	0.095
(sin θ/λ)max (Å−1)	0.676
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.040, 0.097, 1.03
No. of reflections	9030
No. of parameters	463
No. of restraints	147
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	1.97, −2.10

Computer programs: APEX2 (Bruker, 2005 ▸), SAINT and XPREP (Bruker, 2002 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL2018 (Sheldrick, 2015b ▸) and SHELXTL (Sheldrick, 2008 ▸).