[en] The structure of the ternary boride Nd/sub 0.71/Rh/sub 3.29/B2 was determined by single-crystal X-ray diffraction. It has a hexagonal symmetry with space group P62m and cell parameters a = 5.595(2) and c = 2.855(1) angstrom. Its structure is similar to that of the other CeCo3B2-type ternary borides. It is made up of two types of alternating layers, parallel to the (001) plane, formed by either (Nd,Rh) and B atoms or by Rh atoms alone