THE PRESENT INVENTION RELATES TO NEW DOPAMINE D3 AND D2 LIGANDS OF FORMULA (I): WHEREIN R1, R2 AND Q ARE AS DESCRIBED HEREIN, AND/OR GEOMETRIC ISOMERS AND/OR STEREOISOMERS AND/OR DIASTEREOMERS AND/OR SALTS AND/OR HYDRATES AND/OR SOLVATES AND/OR POLYMORPHS THEREOF. THE INVENTION ALSO RELATES TO PROCESSES FOR PREPARING THE SAME, TO COMPOSITIONS CONTAINING THE SAME AND TO THEIR USE IN THE TREATMENT AND/OR PREVENTION OF CONDITIONS WHICH REQUIRES MODULATION OF DOPAMINE RECEPTORS.