Microwave Spectrum of Silver Bromide

Abstract

Microwave transitions have been observed for the four naturally abundant AgBr species at about 850°C. The pure rotational spectra of molecules in several vibrational states have been obtained. The internuclear distance is r_e = 2.392212±0.000004 Å. Quadrupole hyperfine splittings due to the ⁷⁹Br and ⁸¹Br nuclei give coupling constants eqQ of 307 and 257±20 Mc/sec, respectively. The molecular constants for ¹⁰⁷Ag⁷⁹Br are found to be B_e = 1943.687±0.003 Mc/sec, α_e = 7.0742±0.0050 Mc/sec, γ_e = 5.02±0.45 kc/sec, D_e = 0.53±0.13 kc/sec. Values are given for the remaining three isotopic combinations.