return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-116.488927
Energy at 298.15K-116.492165
HF Energy-116.488927
Nuclear repulsion energy63.931365
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3340 3187 0.01 134.19 0.13 0.22
2 A1 3068 2928 68.97 130.25 0.15 0.26
3 A1 1771 1690 10.49 35.79 0.19 0.32
4 A1 1541 1470 4.43 15.92 0.33 0.49
5 A1 1203 1148 1.09 8.92 0.19 0.33
6 A1 940 897 4.14 8.69 0.67 0.81
7 A2 1029 982 0.00 16.27 0.75 0.86
8 A2 868 828 0.00 0.01 0.75 0.86
9 B1 3134 2991 56.34 89.86 0.75 0.86
10 B1 1124 1073 1.60 3.35 0.75 0.86
11 B1 613 585 69.34 1.59 0.75 0.86
12 B2 3293 3142 0.01 70.20 0.75 0.86
13 B2 1092 1042 37.12 0.41 0.75 0.86
14 B2 1049 1001 22.61 0.02 0.75 0.86
15 B2 828 790 15.12 18.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12447.0 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 11878.2 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 HSEh1PBE/6-31G**
ABC
1.00595 0.73724 0.46483

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.856
C2 0.000 0.647 -0.498
C3 0.000 -0.647 -0.498
H4 0.000 1.581 -1.037
H5 0.000 -1.581 -1.037
H6 0.913 0.000 1.459
H7 -0.913 0.000 1.459

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50071.50072.46612.46611.09381.0938
C21.50071.29351.07842.29212.25422.2542
C31.50071.29352.29211.07842.25422.2542
H42.46611.07842.29213.16243.09193.0919
H52.46612.29211.07843.16243.09193.0919
H61.09382.25422.25423.09193.09191.8253
H71.09382.25422.25423.09193.09191.8253

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.470 C1 C2 H4 145.477
C1 C3 C2 64.470 C1 C3 H5 145.477
C2 C1 C3 51.060 C2 C1 H6 119.825
C2 C1 H7 119.825 C2 C3 H5 150.053
C3 C1 H6 119.825 C3 C1 H7 119.825
C3 C2 H4 150.053 H6 C1 H7 113.105
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.286      
2 C -0.107      
3 C -0.107      
4 H 0.132      
5 H 0.132      
6 H 0.118      
7 H 0.118      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.518 0.518
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.974 0.000 0.000
y 0.000 -16.473 0.000
z 0.000 0.000 -18.068
Traceless
 xyz
x -1.704 0.000 0.000
y 0.000 2.048 0.000
z 0.000 0.000 -0.345
Polar
3z2-r2-0.689
x2-y2-2.501
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.774 0.000 0.000
y 0.000 4.672 0.000
z 0.000 0.000 4.745


<r2> (average value of r2) Å2
<r2> 36.607
(<r2>)1/2 6.050