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A heterometallic copper-neodymium complex CuNd 2 (CCl 3 COO) 8 • 6MeCN (1) was synthesized from an aqueousorganic salt system and structurally characterized by single crystal X-Ray diffraction analysis. Thermal stability of 1 was studied. The crystal of 1 is tetragonal, with the space group I4, a = 11.5904(3), c = 23.9195(8) Å, V = 3213.3(2) Å 3 , Z = 8. Two crystallographically unsymmetrical Nd atoms and one Cu atom are bridged by trichloroacetic ligands into one-dimensional molecular chains. According to our experimental data on magnetic properties of 1, the compound could be classified as paramagnet at observed temperature range 2-300 K. In addition, the structure of the obtained Nd (III) trichloroacetate Nd(CCl 3 COO) 3 (H 2 O) 2 • 2H 2 O (2) was determined. The structural data of 1 and 2 were compared to the one for known rareearth trichloroacetates.

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