Photoelectron Spectroscopy of m-Xylylene Anion

摘要

The 351-nm photoelectron spectrum of the negative ion of 1, 3-benzoquinodimethane (m-xylylene) is reported. Features are observed in the photoelectron spectrum corresponding to formation of the ~3B_2, ~1A_1, and ~1B_2 states of m-xylylene. The electron affinity of the triplet ground state is found to be 0.919+ -0.008 eV, and vibrational frequencies of 290, 540, and 1500 cm~-1 are obtained.