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

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

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-115.588148
Energy at 298.15K-115.589907
HF Energy-115.197721
Nuclear repulsion energy57.955222
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=FULL/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' 3392 3169 0.29      
2 A' 3185 2976 55.06      
3 A' 1671 1561 0.29      
4 A' 1293 1208 9.90      
5 A' 1066 996 12.79      
6 A' 964 901 5.28      
7 A' 597 557 61.07      
8 A" 7217 6743 473672.40      
9 A" 3138 2932 2835.35      
10 A" 1052 983 12.52      
11 A" 1023 956 0.30      
12 A" 865 808 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 12730.7 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 11895.6 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 MP2=FULL/6-31G**
ABC
1.05598 0.89363 0.49860

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.037 0.887 0.000
H2 0.746 1.640 0.000
C3 -0.037 -0.417 0.660
C4 -0.037 -0.417 -0.660
H5 -0.039 -0.978 1.575
H6 -0.039 -0.978 -1.575

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6
C11.08631.46191.46192.44172.4417
H21.08632.29792.29793.15463.1546
C31.46192.29791.31991.07362.3046
C41.46192.29791.31992.30461.0736
H52.44173.15461.07362.30463.1506
H62.44173.15462.30461.07363.1506

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 63.165 C1 C3 H5 148.344
C1 C4 C3 63.165 C1 C4 H6 148.344
H2 C1 C3 128.168 H2 C1 C4 128.168
C3 C1 C4 53.670 C3 C4 H6 148.491
C4 C3 H5 148.491
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability