Treatment of the aromatic aminonitrones p-RC₆H₄C(NH₂)[dbnd]N⁺(Me)O⁻ (R = NMe₂, Cl) with CuCl₂·2H₂O, NiCl₂·2H₂O, β-PdCl₂, or cis-[PtCl₂(Me₂SO)₂] in the presence of a base leads to the [M{p-RC₆H₄C(NH)[dbnd]N⁺(Me)O⁻}₂] (M = Cu, Ni, Pd) (72–95%) or [Pt{p-RC₆H₄C(NH)[dbnd]N⁺(Me)O^–}Cl(Me₂SO)] (ca. 80%) complexes, respectively. These compounds were characterized by elemental analyses (C, H, N), HRESI⁺-MS, FTIR, ¹H and ¹³C{¹H} NMR, and for the Cu^II and Ni^II complexes EPR and magnetic susceptibility. In addition, eight species were studied by single-crystal X-ray diffraction. In the X-ray structures of 2a–d, the hydrogen bonds are responsible for the formation of 1D polymeric chains. These bonds were evaluated by DFT calculations (M06/DZP-DKH level of theory) and topological analysis of the electron density distribution within the formalism of Bader's theory (QTAIM method). Estimated strengths of these non-covalent interactions are 2.7–4.4 kcal/mol.