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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: B2PLYP=FULLultrafine/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at B2PLYP=FULLultrafine/6-31G**
 hartrees
Energy at 0K-116.492556
Energy at 298.15K 
HF Energy-116.352944
Nuclear repulsion energy63.814364
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 B2PLYP=FULLultrafine/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 A1 3352 3352 0.00 137.00 0.13 0.23
2 A1 3097 3097 64.38 122.97 0.14 0.25
3 A1 1741 1741 13.62 28.95 0.20 0.34
4 A1 1563 1563 4.55 16.62 0.30 0.46
5 A1 1191 1191 0.71 8.52 0.17 0.29
6 A1 950 950 2.78 9.94 0.65 0.79
7 A2 1036 1036 0.00 16.11 0.75 0.86
8 A2 854 854 0.00 0.01 0.75 0.86
9 B1 3166 3166 56.10 84.33 0.75 0.86
10 B1 1134 1134 1.81 3.42 0.75 0.86
11 B1 598 598 64.53 1.69 0.75 0.86
12 B2 3307 3307 0.01 71.64 0.75 0.86
13 B2 1098 1098 28.79 0.57 0.75 0.86
14 B2 1063 1063 29.70 0.28 0.75 0.86
15 B2 806 806 9.99 17.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12478.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12478.3 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 B2PLYP=FULLultrafine/6-31G**
ABC
1.00361 0.73300 0.46243

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.860
C2 0.000 0.649 -0.500
C3 0.000 -0.649 -0.500
H4 0.000 1.579 -1.039
H5 0.000 -1.579 -1.039
H6 0.910 0.000 1.459
H7 -0.910 0.000 1.459

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50691.50692.47012.47011.08961.0896
C21.50691.29741.07542.29232.25552.2555
C31.50691.29742.29231.07542.25552.2555
H42.47011.07542.29233.15853.09253.0925
H52.47012.29231.07543.15853.09253.0925
H61.08962.25552.25553.09253.09251.8206
H71.08962.25552.25553.09253.09251.8206

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.501 C1 C2 H4 145.586
C1 C3 C2 64.501 C1 C3 H5 145.586
C2 C1 C3 50.997 C2 C1 H6 119.742
C2 C1 H7 119.742 C2 C3 H5 149.913
C3 C1 H6 119.742 C3 C1 H7 119.742
C3 C2 H4 149.913 H6 C1 H7 113.316
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability