The compound ThPd2B2C has been studied with high-resolution electron microscopy and electron diffraction. ThPd2B2_xC adopts the LuNi2BEC structure with a layer sequence (BrNi2-B=-LuC)n in which the B composition and the exact position of the C are still uncertain. No intergrowths or planar defects are observed. The c-axis in the thinner parts of the crystals ( < 50 nm) was observed to decrease up to about 0.5 nm when irradiated by the electron beam.

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