The spin crossover phenomenon in complexes of d-elements from the NMR glance.

The applicability, peculiarities, and progress of the high resolution 1H, 13C, and 15N NMR spectroscopy for elucidating the spin crossover phenomenon were shown. NMR is quite possible to study such systems, extracting a lot of useful information about the properties of complexes in solution. The use of NMR spectroscopy makes it possible to estimate the structural and dynamic peculiarities of complexes possessing a spin crossover. [Display omitted] The applicability, peculiarities, and progress of the high resolution 1H, 13C, and 15N NMR spectroscopy for elucidating the spin crossover phenomenon were shown. The results obtained by the NMR method are compared with the results found by other physicochemical methods. Though, the coordination environment in a solution can change significantly compared with a solid state. As a result, the magnetic properties of the complex as a whole can also vary significantly. NMR is quite possible to study such systems, extracting a lot of useful information about the properties of complexes in solution. The use of NMR spectroscopy makes it possible to estimate the structural and dynamic peculiarities of complexes possessing a spin crossover. In addition, the presence of a "magnetic response" to changing external conditions provides opportunities for targeted design of NMR sensor systems. [ABSTRACT FROM AUTHOR]