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

using model chemistry: MP2/STO-3G

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/STO-3G
Rotational Constants (cm-1) from geometry optimized at MP2/STO-3G
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-113.926297
Energy at 298.15K-113.928012
HF Energy-113.754275
Nuclear repulsion energy56.778311
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/STO-3G
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' 3605 3143 8.71      
2 A' 3413 2976 7.40      
3 A' 1715 1495 0.30      
4 A' 1408 1227 12.60      
5 A' 1148 1001 7.47      
6 A' 1023 892 0.92      
7 A' 673 587 26.69      
8 A" 3593 3133 3.27      
9 A" 1507 1314 187.86      
10 A" 1149 1002 0.10      
11 A" 1066 929 0.33      
12 A" 931 812 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 10615.6 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 9255.8 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/STO-3G
ABC
1.02093 0.84976 0.47937

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 0.915 0.000
H2 0.797 1.638 0.000
C3 -0.041 -0.426 0.670
C4 -0.041 -0.426 -0.670
H5 -0.026 -1.007 1.597
H6 -0.026 -1.007 -1.597

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.10761.49911.49912.49932.4993
H21.10762.32682.32683.19833.1983
C31.49912.32681.34031.09442.3407
C41.49912.32681.34032.34071.0944
H52.49933.19831.09442.34073.1944
H62.49933.19832.34071.09443.1944

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 63.447 C1 C3 H5 148.635
C1 C4 C3 63.447 C1 C4 H6 148.635
H2 C1 C3 125.748 H2 C1 C4 125.748
C3 C1 C4 53.106 C3 C4 H6 147.901
C4 C3 H5 147.901
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability