Neodymium oxychloride or neodymium oxide chloride is an inorganic compound of neodymium, oxygen, and chlorine with the chemical formula .

Synthesis NdOCl can be synthesized by reacting neodymium oxide () and calcium dichloride ().

Physical properties The compound forms crystals of tetragonal system, space group P4/nmm.

It exhibits paramagnetic susceptibility and structural stability.

Chemical properties NdOCl can be reduced to metallic neodymium through high-temperature electrolysis, specifically within the FFC (Fray-Farthing-Chen) process.

Uses NdOCl has been investigated as a cathode material for the extraction of metallic neodymium.

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