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New metal-mesogenic systems based on copper and mesogenic cyanobiphenyls 5CB and 8CB have been produced by low temperature co-condensation of their component vapors. The formation of low temperature complexes of copper atoms with the cyanobiphenyl π-system in the solid state at 80-150 K was shown by ESR- and UV-Vis spectroscopic data. The thermal stability of the complexes and their thermal behavior on warming of the co-condensate samples up to room temperature are discussed.