Within the framework of this dissertation in the field of bioinorganic chemistry, new ligands based on N/S/O donor systems for single and multi-core copper(I) and copper(II) complexes have been synthesized and characterized. These complexes should function as biomimetic model complexes for the modeling of the enzymes peptidylglycine- hydroxylating monooxygenase (PHM) and dopamine -hydroxylase (DH). Structural Model complexes simplify the native environment of the active centers of these enzymes in a simplified manner and offer research insight into the structure, properties and functionality of the enzymes.In the first part of this thesis the focus was on the synthesis of tripodal tri- and tetradentate ligands with N/S/O donor functions and their characterization by different spectroscopic and spectrometric methods. Through previous work and research, these systems were further developed and their potential as possible ligand systems were investigated. In particular, new findings on the coordination properties, spectroscopic properties and the chemistry of these ligands have been obtained.In the second part of this dissertation these ligands were subsequently converted into copper complexes with different copper (I/II) salts and afterwards characterized and investigated. For this purpose, many copper (I/II) complexes and complexsalts could be obtained.Above all, through spectroscopic and spectrometric investigations new knowledge could be obtained. Especially investigations on oxygen activation of copper(I) complexsalts with sulfurguanidine ligands presented in this work have been carried out. These are a decisive step towards the possible understanding of the structure, properties and functioning of the enzymes.