The importance of ⁷⁷Se Nuclear Magnetic Resonance (NMR) is directly connected to the eminent role of this chalcogen atom in different fields, from inorganic chemistry¹  and materials science²  to organic catalysis,³  bioorganic and pharmaceutical chemistry,⁴  to biology⁵  and the biomedical field.⁶  The first experiments, to the best of our knowledge, date back to the 50s, when Dharmatti and Weaver⁷  reported the sign and magnitude of the selenium magnetic moment using a concentrated sample of selenous acid referring to ²³Na, and Walchli measured the chemical shifts of H₂Se, H₂SeO₂, and H₂SeO₄ referring to D₂O.^8  77Se NMR is considered a powerful tool to gain direct information on selenium states in reactions and in mechanistic studies.⁹  In fact, its wide chemical shift range (over 6000 ppm) allows a fine resolution of different chemical sites. The major drawbacks are the low natural abundance (approximately 7.6%), and the low NMR sensitivity.