The crystal structure of bis(2-(piperidin-1-ium-4-yl)-1Hbenzo[d]imidazol-3-ium) dihydrogen decavanadate, C 24 H 36 N 6 O 28 V 10

C 24 H 36 N 6 O 28 V 10 , monoclinic, P 2 1 / c (no. 14), a = 10.4869(6) Å, b = 11.5123(7) Å, c = 17.4627(9) Å, β = 108.459(3) ° , V = 1999.8(2) Å 3 , Z = 2, R gt ( F ) = 0.0209, wR ref ( F 2 ) = 0.0582, T = 296 K.


Source of materials
The title compound was prepared by hydrothermal methods in a mixture of 2-(piperidin-1-ium-4-yl)-1Hbenzo[d]imidazol-3-ium dichloride dihydrate, (0.62 g, 2 mmol), (NH 4 ) 6 V 10 O 28 • 6H 2 O (1.173 g, 1 mmol) and H 2 O (10 mL).The mixture was stirred for 1 h in air and then transferred to a Teflon-lined stainless steel autoclave (20 mL) and kept at 373 K for 2 h.After the autoclave had cooled to room temperature over 6 h, orange block crystals were filtered off, washed with distilled water, and air-dried to give a yield of 70 % based on V.

Experimental details
The structure was solved by Direct Methods with the SHELXS-2018 program.All H-atoms from C atoms and N atoms were positioned with idealized geometry and refined isotropically (U iso (H) = 1.2 U eq (C) or 1.2 U eq (N) for all H atoms) using a riding model with C-H = 0.93-0.97Å and N-H = 0.86-0.90Å.The H-atom positions of dihydrogen decavanadate were fixed as found (O-H = 0.85 Å, with U iso (H) = 1.5 U eq (O)), which is also consistent with empirical bond length/bond number calculation.
Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

Research funding: National Natural Science Foundation of China (22171122).
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

Table  :
Data collection and handling.

Table  :
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å  ).