Solid-state selenium-77 NMR

Selenium-77 is one of the six naturally occurring isotopes of selenium and, with a natural abundance of 7.63%, it is the only NMR-active isotope since it possesses a nuclear spin quantum number, I, greater than zero. Selenium-77 NMR is an ideal technique for investigating selenium-containing materials as the 77Se chemical shift ranges over 3000 ppm and is extremely sensitive to changes in molecular structure. Solid-state 77Se NMR spectroscopy provides isotropic chemical shifts, indirect spin spin coupling constants, as well as spin lattice, and spin spin, relaxation times. Haas and Jansen have utilized solid-state 77Se NMR in the characterization of some novel selenium oxide systems. Solid-state 77Se NMR is clearly an important tool in identifying and characterizing many areas of selenium chemistry from organic systems, compounds and conductors, to inorganic materials, complexes and glasses.