HTBZ-HMA crystallized in the monoclinic P21/n space group, with one HTBZ cation and one HMA anion in the asymmetric unit. The cation exhibited structural disorder and was statistically distributed between a major and minor position, with occupancies of 0.90 and 0.10, respectively. Each HTBZ cation formed hydrogen bonds with symmetrically equivalent HMA anions, with H⋅⋅⋅O bond distances of 1.965(1) Å and 1.815(1) Å. Interestingly, one of the HMA anions lies on the same plane as the HTBZ cation, while the other HMA anion is nearly perpendicular to the cation's plane (Figure ). This relative orientation of the constituents leads to the formation of columns, with each HTBZ cation sandwiched between two HMA anions. Such local structure around the HTBZ cations is unique in the studied structures. The crystal packing of HTBZ-HMA is depicted in Figure .