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

using model chemistry: MP2/6-31G**

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 MP2/6-31G**
Rotational Constants (cm-1) from geometry optimized at MP2/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-115.573507
Energy at 298.15K-115.575260
HF Energy-115.197561
Nuclear repulsion energy57.888758
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 MP2/6-31G**
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' 3389 3174 0.27      
2 A' 3181 2979 55.88      
3 A' 1668 1562 0.30      
4 A' 1291 1209 9.94      
5 A' 1065 998 12.66      
6 A' 964 902 5.18      
7 A' 592 554 61.19      
8 A" 8108 7594 776604.00      
9 A" 3145 2945 2640.76      
10 A" 1051 984 12.29      
11 A" 1021 956 0.41      
12 A" 859 804 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 13166.5 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 12330.5 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 MP2/6-31G**
ABC
1.05363 0.89148 0.49745

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.888 0.000
H2 0.747 1.641 0.000
C3 -0.037 -0.418 0.661
C4 -0.037 -0.418 -0.661
H5 -0.039 -0.979 1.577
H6 -0.039 -0.979 -1.577

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.08741.46381.46382.44442.4444
H21.08742.30042.30043.15793.1579
C31.46382.30041.32151.07462.3069
C41.46382.30041.32152.30691.0746
H52.44443.15791.07462.30693.1535
H62.44443.15792.30691.07463.1535

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 63.166 C1 C3 H5 148.351
C1 C4 C3 63.166 C1 C4 H6 148.351
H2 C1 C3 128.155 H2 C1 C4 128.155
C3 C1 C4 53.667 C3 C4 H6 148.482
C4 C3 H5 148.482
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability