We investigated the structural and magnetic properties of single-crystalline ${\mathrm{VCl}}_3$, a newly synthesized member of the vanadium trihalide family. High-quality single crystals were grown by the chemical vapor transport method, and their behavior was characterized using neutron diffraction and thermodynamic measurements. We show that ${\mathrm{VCl}}_3$ crystallizes in the ${\mathrm{BiI}}_3$-type structure at room temperature and undergoes a structural phase transition at $T_S=103.7\left(5\right)\mathrm{K}$ that lowers the lattice symmetry, followed by a zigzag antiferromagnetic order with a propagation vector $k=(0,0.5,1)$ below $T_N=21.8\left(1\right)\mathrm{K}$. Neutron diffraction experiments indicate that the ordered moments are canted by approximately ${21}^{\circ }$ away from the $c$ axis toward the $a$ axis, yielding a total moment of approximately $1.09\left(2\right){\mu }_{\mathrm{B}}/{\mathrm{V}}^{3+}$. Field-dependent magnetization along the $c$ axis exhibits a half magnetization plateau, indicative of a field-stabilized fractional state. These results establish ${\mathrm{VCl}}_3$ as a new platform for exploring structural transitions, anisotropic magnetism, and field-induced phases in vanadium-based honeycomb magnets.

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• Magnetic order
• Magnetic phase transitions
• Antiferromagnets
• van der Waals systems
• Neutron diffraction