Abstract
Vanadium and oxygen centers are prevalent in a plethora of inorganic complexes ranging from functional materials to biological systems and pharmaceutical agents. Nuclear magnetic resonance (NMR) spectroscopy can provide a detailed characterization of electronic and coordination environments of vanadium and oxygen centers. Compared to the more common and relatively well-studied NMR nuclei such as 1H, 13C, 15N and 31P, 17O, and 51V NMR studies often suffer from sensitivity and resolution challenges owing to their unique nuclear properties. Despite these limitations, several detailed studies undertaken in the literature illustrate that extensive characterization of these centers can be performed by NMR, particularly in the solid state, leading to critical evaluation of the properties of the system under consideration. These studies underscore the development in NMR methodologies and hardware, which has allowed for 17O and 51V NMR measurements to become more widely available to researchers. In this chapter, we present an overview of the recent applications of 17O and 51V solid state NMR spectroscopy to investigate oxygen and vanadium centers in inorganic complexes relevant to materials and biological systems.
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