2.2. Single-Crystal X-ray Diffraction

Individual crystals were extracted from the mother liquor, and a high-quality single crystal of the material was placed on a Mitigen micromount. Reflections were acquired using 0.5° ω scans at 100 K on a Bruker D8 Quest single X-ray diffractometer (λ_Mo Kα = 0.71073 Å) equipped with a PHOTON detector and an Oxford cryo-system operating at 100 K. Data collection and integration of the data was performed using the Bruker APEX3 software and absorption corrections were performed using the SADABS program. The initial structure was solved using APEX3 intrinsic phasing, and least squares refinements of the partial structure model were performed using SHELXL and the OLEX2²⁵ software packages. Hydrogen atoms associated with the piperazinium cation and water molecules were modeled with AFIX 23 and AFIX 7, respectively. Select crystallographic information for (C₄H₁₂N₂)₂[UO₂Cl₄(H₂O)]Cl_2(s) can be found in Table 1, and the thermal ellipsoid plot is available in the Supporting Information (Figure S1). The crystallographic information file (CIF) deposition number is 2241014 and can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif.