Table 3. Experimental details.

Crystal data
Chemical formula	C2H10N2 2+·C21H13N3O8S2−·2H2O
M r	565.55
Crystal system, space group	Monoclinic, P21/c
Temperature (K)	296
a, b, c (Å)	7.0590 (6), 23.851 (2), 15.3622 (13)
β (°)	93.337 (3)
V (Å3)	2582.1 (4)
Z	4
Radiation type	Mo Kα
μ (mm−1)	0.19
Crystal size (mm)	0.26 × 0.15 × 0.08
Data collection
Diffractometer	Bruker APEXII CCD
Absorption correction	Multi-scan (SADABS; Bruker, 2007 ▸)
T min, T max	0.946, 0.975
No. of measured, independent and observed [I > 2σ(I)] reflections	41494, 4930, 3559
R int	0.083
(sin θ/λ)max (Å−1)	0.611
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S	0.043, 0.112, 1.02
No. of reflections	4930
No. of parameters	352
H-atom treatment	H-atom parameters constrained
Δρmax, Δρmin (e Å−3)	0.37, −0.34

Computer programs: APEX2 and SAINT (Bruker, 2007 ▸), SHELXS97 (Sheldrick, 2008 ▸), SHELXL2018 (Sheldrick, 2015 ▸), ORTEP-3 for Windows (Farrugia, 2012 ▸) and PLATON (Spek, 2009 ▸).