Table 1. Experimental details.

Crystal data
Chemical formula	[Ni(C18H18S2)2]
M r	655.60
Crystal system, space group	Monoclinic, P21/c
Temperature (K)	150
a, b, c (Å)	8.4446 (2), 14.0911 (2), 13.5880 (2)
β (°)	96.133 (1)
V (Å3)	1607.63 (5)
Z	2
Radiation type	Cu Kα
μ (mm−1)	3.47
Crystal size (mm)	0.14 × 0.14 × 0.04
Data collection
Diffractometer	Bruker D8 QUEST PHOTON 3 diffractometer
Absorption correction	Multi-scan (SADABS; Krause et al., 2015 ▸)
Tmin, Tmax	0.77, 0.88
No. of measured, independent and observed [I > 2σ(I)] reflections	33748, 3139, 2827
R int	0.077
(sin θ/λ)max (Å−1)	0.618
Refinement
R[F2 > 2σ(F2)], wR(F2), S	0.024, 0.066, 1.08
No. of reflections	3139
No. of parameters	191
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.29, −0.30

Computer programs: APEX4 and SAINT (Bruker, 2021 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL2018/1 (Sheldrick, 2015b ▸) and SHELXTL (Sheldrick, 2008 ▸).