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All results from a given calculation for HCO (Formyl radical)

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-113.085887
Energy at 298.15K 
HF Energy-113.085887
Nuclear repulsion energy25.742750
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 PBEPBE/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' 2545 2522 91.97 125.39 0.32 0.49
2 A' 1758 1742 39.65 10.14 0.37 0.54
3 A' 1079 1069 25.56 17.61 0.72 0.84

Unscaled Zero Point Vibrational Energy (zpe) 2690.8 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 2666.3 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 PBEPBE/3-21G
ABC
24.15195 1.40212 1.32518

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.062 0.603 0.000
H2 -0.863 1.266 0.000
O3 0.062 -0.611 0.000

Atom - Atom Distances (Å)
  C1 H2 O3
C11.13711.2138
H21.13712.0916
O31.21382.0916

picture of Formyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 O3 125.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.123      
2 H 0.189      
3 O -0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.006 1.117 0.000 1.503
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.211 -1.076 0.000
y -1.076 -11.628 0.000
z 0.000 0.000 -10.700
Traceless
 xyz
x -0.047 -1.076 0.000
y -1.076 -0.673 0.000
z 0.000 0.000 0.720
Polar
3z2-r21.440
x2-y20.418
xy-1.076
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.443 -0.401 0.000
y -0.401 2.373 0.000
z 0.000 0.000 0.932


<r2> (average value of r2) Å2
<r2> 14.548
(<r2>)1/2 3.814