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

using model chemistry: MP4/aug-cc-pVDZ

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 MP4/6-31G*
Rotational Constants (cm-1) from geometry optimized at MP4/aug-cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP4/aug-cc-pVDZ
 hartrees
Energy at 0K-115.633077
Energy at 298.15K-115.634850
HF Energy-115.204502
Nuclear repulsion energy57.026541
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 MP4/6-31G*
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' 3941 3850        
2 A' 3109 3037        
3 A' 2857 2791        
4 A' 1150 1123        
5 A' 954 932        
6 A' 940 918        
7 A' 574 561        
8 A" 4708 4599        
9 A" 2988 2919        
10 A" 2051 2004        
11 A" 1713 1674        
12 A" 928 907        

Unscaled Zero Point Vibrational Energy (zpe) 12956.9 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 12657.6 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 MP4/aug-cc-pVDZ
ABC
1.02440 0.86366 0.48251

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.902 0.000
H2 0.755 1.671 0.000
C3 -0.037 -0.424 0.670
C4 -0.037 -0.424 -0.670
H5 -0.043 -0.997 1.598
H6 -0.043 -0.997 -1.598

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.10341.48641.48642.48202.4820
H21.10342.33782.33783.21023.2102
C31.48642.33781.34101.09012.3398
C41.48642.33781.34102.33981.0901
H52.48203.21021.09012.33983.1964
H62.48203.21022.33981.09013.1964

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 63.187 C1 C3 H5 148.483
C1 C4 C3 63.187 C1 C4 H6 148.483
H2 C1 C3 128.430 H2 C1 C4 128.430
C3 C1 C4 53.626 C3 C4 H6 148.328
C4 C3 H5 148.328
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability