This is a stereo plot of a computation of the F2CO molecule with the program KIMBALL by Silvan Perego, diploma thesis at the University of Bern, "Untersuchungen eines heuristischen quantenchemischen Modells", April 1989. In the left lower corner the final total energy after automatic optimization is given. On the right of that number the virial V/T is documented. The molecular symmetry is calculated to be C2v. The total energy -309.2666 hartree compares with the following ab initio results:

Program (runtype: optimize)	Model Chemistry, Basis	Total energy     (V/T)
KIMBALL (standard parameters)	"Spherical Clouds", homogeneous density	-309.2666          (-2.00004)
Gaussian 94W	RHF/STO-3G	-307.30794        (-2.0118)
Gaussian 94W	RHF/6-21G	-311.14186        (-2.0006)
Gaussian 94W	B3LYP/6-311+G(3df,2p)	-311.62472        (-2.0027)

 All the computations find the symmetry C2v. Here are distances in Angstroms and angles in degrees for comparison: 

Program	d(C=O)	d(C-F)	angle(OCF)
KIMBALL	1.2026	1.3256	122.19
G94W/RHF/STO-3G	1.2084	1.3473	125.05
G94W/RHF/6-21G	1.1720	1.3267	125.79
G94W/RHF/6-31+G(D)	1.1570	1.2916	125.80

 
Gamess and GamessPC ,  Gaussian 94