THE INVESTIGATION OF SPIN-CROSSOVER IN TETRANUCLEAR IRON (II) COMPLEXES BY MAGNETIC MEASUREMENTS

The synthesis of iron (II) tetrahedral complexes was carried out under carefully controlled conditions, using precisely selected chemical reagents and specific reaction parameters. After completing the synthesis, the structural integrity of the complexes was confirmed through elemental analysis, which verified the presence of the main elements in the crystals, ensuring the accuracy of the synthesis and confirming the desired composition of the obtained compounds. Following the synthesis, a series of magnetic measurements was performed on the monocrystalline samples to study their magnetic properties in detail. These measurements were particularly focused on investigating the spin crossover behavior, which is an important phenomenon that occurs in iron (II) complexes. This transition between low-spin and high-spin states under varying external conditions, such as temperature, plays a key role in defining the magnetic properties of the compounds. The development of a detailed methodology for optimizing the synthesis conditions was a crucial part of the research. It allowed for the production of complexes with high purity and yield, ensuring reliable and reproducible results in subsequent measurements and studies. Moreover, the impact of temperature changes on the spin crossover process was thoroughly investigated. The findings demonstrated that temperature significantly influences the spin states of the complexes, which is critical for practical applications. These results could have implications for the design of new materials with tunable magnetic properties, particularly in fields such as molecular electronics and spintronic devices.