return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for FCO (Carbonyl fluoride)

using model chemistry: HF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-210.936659
Energy at 298.15K-210.936432
HF Energy-210.936659
Nuclear repulsion energy59.869344
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2009 1819 209.14      
2 A' 1140 1033 160.95      
3 A' 682 618 26.00      

Unscaled Zero Point Vibrational Energy (zpe) 1915.5 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 1734.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/3-21G
ABC
6.47213 0.37609 0.35544

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
F1 -1.020 -0.455 0.000
C2 0.000 0.418 0.000
O3 1.147 0.198 0.000

Atom - Atom Distances (Å)
  F1 C2 O3
F11.34262.2628
C21.34261.1679
O32.26281.1679

picture of Carbonyl fluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F1 C2 O3 128.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 F -0.348      
2 C 0.834      
3 O -0.487      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.898 0.662 0.000 1.116
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.927 -0.944 0.000
y -0.944 -15.156 0.000
z 0.000 0.000 -14.021
Traceless
 xyz
x -4.338 -0.944 0.000
y -0.944 1.318 0.000
z 0.000 0.000 3.020
Polar
3z2-r26.040
x2-y2-3.771
xy-0.944
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.229 0.120 0.000
y 0.120 1.154 0.000
z 0.000 0.000 0.858


<r2> (average value of r2) Å2
<r2> 33.123
(<r2>)1/2 5.755