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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CID/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at CID/6-311+G(3df,2p)
 hartrees
Energy at 0K-116.309981
Energy at 298.15K-116.313289
HF Energy-115.863959
Nuclear repulsion energy64.321454
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 CID/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3408 3149 0.86      
2 A1 3149 2909 60.16      
3 A1 1789 1653 18.94      
4 A1 1584 1464 0.97      
5 A1 1214 1121 0.00      
6 A1 970 896 3.95      
7 A2 1062 981 0.00      
8 A2 912 843 0.00      
9 B1 3219 2974 35.69      
10 B1 1154 1066 2.05      
11 B1 636 588 87.94      
12 B2 3360 3105 1.80      
13 B2 1132 1046 22.08      
14 B2 1099 1016 33.17      
15 B2 847 782 18.57      

Unscaled Zero Point Vibrational Energy (zpe) 12767.3 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 11797.0 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 CID/6-311+G(3df,2p)
ABC
1.02424 0.74130 0.46973

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.856
C2 0.000 0.641 -0.497
C3 0.000 -0.641 -0.497
H4 0.000 1.566 -1.032
H5 0.000 -1.566 -1.032
H6 0.906 0.000 1.447
H7 -0.906 0.000 1.447

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49771.49772.45312.45311.08191.0819
C21.49771.28191.06852.27082.23902.2390
C31.49771.28192.27081.06852.23902.2390
H42.45311.06852.27083.13223.06913.0691
H52.45312.27081.06853.13223.06913.0691
H61.08192.23902.23903.06913.06911.8126
H71.08192.23902.23903.06913.06911.8126

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.662 C1 C2 H4 145.355
C1 C3 C2 64.662 C1 C3 H5 145.355
C2 C1 C3 50.676 C2 C1 H6 119.577
C2 C1 H7 119.577 C2 C3 H5 149.982
C3 C1 H6 119.577 C3 C1 H7 119.577
C3 C2 H4 149.982 H6 C1 H7 113.796
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability