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VCl2 is trigonal omega structured and crystallizes in the trigonal P-3m1 space group. The structure is two-dimensional and consists of one VCl2 sheet oriented in the (0, 0, 1) direction. V2+ is bonded to six equivalent Cl1- atoms to form edge-sharing VCl6 octahedra. All V–Cl bond lengths are 2.50 Å. Cl1- is bonded in a distorted T-shaped geometry to three equivalent V2+ atoms.
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Owing to their relatively high thermal conductivity and corrosion resistance, and low radiation heating and embrittlement properties, vanadium (V) alloys are being considered for fusion blanket structural materials. As such, the fundamental behavior of these materials, including the speciation of their corrosion products in molten lithium salts, must be elucidated to enable quantitative lifetime prediction. Yuan et al. [REF#1] demonstrated the reduction and oxidation of vanadium ions in molten LiCl-KCl eutectic salt using a tungsten wire, indicating the possibility of metallic vanadium reduction from V3+ negative potentials