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All results from a given calculation for C3H3 (cyclopropenyl radical)

using model chemistry: ROMP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 2A'

Conformer 1 (D3H)

Jump to S1C2
Vibrational Frequencies calculated at ROMP2/6-31G*
Rotational Constants (cm-1) from geometry optimized at ROMP2/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at ROMP2/6-31G*
 hartrees
Energy at 0K-115.550378
Energy at 298.15K-115.552017
HF Energy-115.188144
Nuclear repulsion energy57.829706
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 ROMP2/6-31G*
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' 3363 3363        
2 A' 3147 3147        
3 A' 1663 1663        
4 A' 1285 1285        
5 A' 1061 1061        
6 A' 957 957        
7 A' 590 590        
8 A" 3321 3321        
9 A" 1083 1083        
10 A" 1022 1022        
11 A" 854 854        
12 A" 794 794        

Unscaled Zero Point Vibrational Energy (zpe) 9570.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9570.1 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 ROMP2/6-31G*
ABC
1.05148 0.89022 0.49663

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.888 0.000
H2 0.749 1.647 0.000
C3 -0.037 -0.418 0.661
C4 -0.037 -0.418 -0.661
H5 -0.039 -0.981 1.581
H6 -0.039 -0.981 -1.581

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.09251.46381.46382.44862.4486
H21.09252.30582.30583.16673.1667
C31.46382.30581.32161.07932.3119
C41.46382.30581.32162.31191.0793
H52.44863.16671.07932.31193.1628
H62.44863.16672.31191.07933.1628

picture of cyclopropenyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 63.164 C1 C3 H5 148.298
C1 C4 C3 63.164 C1 C4 H6 148.298
H2 C1 C3 128.267 H2 C1 C4 128.267
C3 C1 C4 53.671 C3 C4 H6 148.537
C4 C3 H5 148.537
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.199      
2 H 0.153      
3 C -0.195      
4 C -0.195      
5 H 0.218      
6 H 0.218      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 33.302
(<r2>)1/2 5.771