Molecular x-ray spectra: S-Kβ emission and K absorption spectra of thiophene

Abstract
The high resolution sulfur Kβ emission in fluorescence and sulfur K absorption of thiophene (C4H4S) were measured with a double crystal spectrometer. The sulfur Kβ emission spectrum was analyzed by comparison with complementary spectral data and with MNDO and ab initio (STO‐3G) MO calculations. A tentative assignment of the prominent features in the absorption spectrum was made using MO calculations as a guide. In addition the sulfur LII,III emission spectrum was reinterpreted. The sulfur 1s binding energy of thiophene was estimated as 2477.6 eV.