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

using model chemistry: CCD/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 CCD/6-31G*
Rotational Constants (cm-1) from geometry optimized at CCD/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-115.571563
Energy at 298.15K-115.573307
HF Energy-115.191529
Nuclear repulsion energy57.849436
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 CCD/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' 3347 3168 0.14      
2 A' 3131 2963 54.11      
3 A' 1710 1618 0.24      
4 A' 1281 1213 10.43      
5 A' 1052 995 14.27      
6 A' 957 906 5.23      
7 A' 597 565 69.89      
8 A" 4181 3958 33885.51      
9 A" 2954 2796 5325.14      
10 A" 1043 987 12.92      
11 A" 1016 961 0.00      
12 A" 860 814 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 11063.8 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 10471.9 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 CCD/6-31G*
ABC
1.05869 0.88556 0.49665

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.891 0.000
H2 0.747 1.653 0.000
C3 -0.037 -0.419 0.658
C4 -0.037 -0.419 -0.658
H5 -0.039 -0.982 1.580
H6 -0.039 -0.982 -1.580

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.09351.46581.46582.45012.4501
H21.09352.31132.31133.17153.1715
C31.46582.31131.31541.08052.3075
C41.46582.31131.31542.30751.0805
H52.45013.17151.08052.30753.1604
H62.45013.17152.30751.08053.1604

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 63.339 C1 C3 H5 148.035
C1 C4 C3 63.339 C1 C4 H6 148.035
H2 C1 C3 128.551 H2 C1 C4 128.551
C3 C1 C4 53.322 C3 C4 H6 148.625
C4 C3 H5 148.625
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability