The reaction of the chromium(III) chloride tetrahydrofuran complex with the dipivaloylmethane ligand, the lanthanide alcoholic salt DyCl₃·CH₃OH and the 1,1,1-tris(hydroxymethyl)-ethane ligand resulted in the formation of a new trinuclear chromium–dysprosium complex. Magnetic investigations revealed that the new 3d–4f complex exhibits single molecule magnet behaviour.