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Elemental mass calculator5/24/2023 ![]() Diphenyl ditelluride (98%) was obtained from Sigma Aldrich (St. The mass spectrometer conditions were as follows: resolving power = 10,000 (FWHM), orifice 1 = 20 V, orifice 2 = 5 V, ring lens = 5 V, RF ion guide potential = 600 V, and spectral acquisition rate = 1 spectrum s −1 for the m/ z range 70–1000. Helium gas was used with the DART gas heater set to 350 ☌ and the DART exit electrode set to + 150 V. ![]() ![]() Positive-ion mass spectra were measured with a high-resolution time-of-flight mass spectrometer (AccuTOF-DART, JEOL USA, Inc., Peabody, MA, USA) equipped with a direct analysis in real time (DART) ion source (DART-SVP, IonSense LLC, Saugus, MA, USA).
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