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All results from a given calculation for HCOO (formate neutral radical)

using model chemistry: HF/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-37.325302
Energy at 298.15K-37.326571
HF Energy-37.325302
Nuclear repulsion energy33.119619
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/CEP-31G
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' 3331 3002 33.18      
2 A' 1815 1636 322.77      
3 A' 1468 1323 4.37      
4 A' 1115 1005 151.80      
5 A' 619 558 60.07      
6 A" 1088 980 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 4717.5 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 4252.3 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/CEP-31G
ABC
3.06079 0.40387 0.35679

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.382 0.000
H2 -0.302 1.426 0.000
O3 1.142 -0.028 0.000
O4 -1.104 -0.437 0.000

Atom - Atom Distances (Å)
  C1 H2 O3 O4
C11.08661.21281.3748
H21.08662.04852.0287
O31.21282.04852.2824
O41.37482.02872.2824

picture of formate neutral radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 O3 125.873 H2 C1 O4 110.466
O3 C1 O4 123.660
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.080      
2 H 0.196      
3 O -0.203      
4 O -0.073      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.839 2.392 0.000 3.017
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.035 -1.362 0.000
y -1.362 -14.670 0.000
z 0.000 0.000 -16.248
Traceless
 xyz
x -6.576 -1.362 0.000
y -1.362 4.471 0.000
z 0.000 0.000 2.105
Polar
3z2-r24.210
x2-y2-7.365
xy-1.362
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.055 -0.174 0.000
y -0.174 1.815 0.000
z 0.000 0.000 1.147


<r2> (average value of r2) Å2
<r2> 30.014
(<r2>)1/2 5.479