We report a comprehensive study of the ternary compound ThIrSn, characterized by a distorted kagome lattice of Th atoms in polycrystalline form. The compound adopts a noncentrosymmetric ZrNiAl-type crystal structure, with cell parameters $a=b=7.5097\left(4\right)\AA$ and $c=4.1042\left(3\right)\AA$. The resistivity and magnetic susceptibility measurements reveal that ThIrSn exhibits metallic behavior, low magnetoresistance, and paramagnetic characteristics. Hall effect measurements have determined that the carrier type is predominantly electrons, following a single-band model. Furthermore, first-principles calculations indicate that the electronic states near the Fermi level are predominantly contributed by Th and Ir. The band structure exhibits Dirac-like crossings and van Hove singularities at the $M$ and $K$ points, suggesting the potential existence of nontrivial topological characteristics. This work not only establishes ThIrSn as a promising platform for investigating potential topological metals, but also advances the study of ternary intermetallic compounds in distorted kagome lattice systems.

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• Magnetism
• Crystal structures
• Sample preparation
• Transport techniques