Reference Label	Details
note unc	The quoted uncertainty appeared to correspond to one std dev. and was multiplied by 2 to come closer to the desired 95% confidence limit
Engelking 1981	P. C. Engelking, R. R. Corderman, J. J. Wendoloski, G. B. Ellison, S. V. ONeil, and W. C. Lineberger, J. Chem. Phys. 74, 5460-5473 (1981) Laser Photoelectron Spectroscopy of CH2-, and the Singlet-Triplet Splitting in Methylene