Carbon-13 nuclear magnetic resonance studies of heterocycles bearing carbon-sulfur and carbon-selenium bonds: 1,3,4-thiadiazole, 1,3,4-selenadiazole, and tetrazole derivatives
Carbon-13 nuclear magnetic resonance studies of heterocycles bearing carbon-sulfur and carbon-selenium bonds: 1,3,4-thiadiazole, 1,3,4-selenadiazole, and tetrazole derivatives