Photoelectron spectrum of PdO−

Abstract

The photoelectron spectrum of PdO− is presented and discussed. The spectrum exhibits multiple, close-lying electronic transitions from what appears to be a single state of the anion. The electron affinity of PdO is determined to be 1.570±0.006 eV. No vibrational structure is observed in the spectrum, but a recurring 780±60 cm−1 spacing appears to be from spin-orbit splitting in the low-lying 3Π neutral state.