Y. Yamaguchi, C. D. Sherrill and H. F. Schaefer, James L. Kinsey Issue, J. Phys. Four electronically low-lying states of CH 2 have been investigated systematically using ab initio electronic structure theory.
Special emphasis is placed on the second and third excited states.
Theoretical treatments of states not the lowest of their symmetry are traditionally treacherous. It is confirmed in this study that the four low-lying states of CH 2 all have bent structures.