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: TPSSh/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at TPSSh/daug-cc-pVTZ
 hartrees
Energy at 0K-116.674907
Energy at 298.15K-116.678122
HF Energy-116.674907
Nuclear repulsion energy63.929365
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 TPSSh/daug-cc-pVTZ
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 3285 3285 0.00 154.03 0.13 0.23
2 A1 3032 3032 78.67 160.73 0.12 0.22
3 A1 1723 1723 17.17 62.02 0.06 0.12
4 A1 1527 1527 2.47 13.11 0.17 0.29
5 A1 1160 1160 0.48 15.98 0.11 0.20
6 A1 930 930 3.61 4.93 0.61 0.75
7 A2 1021 1021 0.00 2.29 0.75 0.86
8 A2 865 865 0.00 1.01 0.75 0.86
9 B1 3093 3093 47.66 115.26 0.75 0.86
10 B1 1110 1110 1.88 0.10 0.75 0.86
11 B1 610 610 82.11 0.08 0.75 0.86
12 B2 3239 3239 0.01 85.87 0.75 0.86
13 B2 1072 1072 27.71 0.22 0.75 0.86
14 B2 1037 1037 28.37 0.01 0.75 0.86
15 B2 803 803 15.87 12.98 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12252.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12252.4 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 TPSSh/daug-cc-pVTZ
ABC
1.01062 0.73334 0.46427

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.860
C2 0.000 0.645 -0.500
C3 0.000 -0.645 -0.500
H4 0.000 1.576 -1.040
H5 0.000 -1.576 -1.040
H6 0.913 0.000 1.456
H7 -0.913 0.000 1.456

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50531.50532.46882.46881.08991.0899
C21.50531.29071.07612.28612.25252.2525
C31.50531.29072.28611.07612.25252.2525
H42.46881.07612.28613.15183.08993.0899
H52.46882.28611.07613.15183.08993.0899
H61.08992.25252.25253.08993.08991.8254
H71.08992.25252.25253.08993.08991.8254

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.612 C1 C2 H4 145.541
C1 C3 C2 64.612 C1 C3 H5 145.541
C2 C1 C3 50.775 C2 C1 H6 119.591
C2 C1 H7 119.591 C2 C3 H5 149.846
C3 C1 H6 119.591 C3 C1 H7 119.591
C3 C2 H4 149.846 H6 C1 H7 113.733
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.380      
2 C -0.208      
3 C -0.208      
4 H 0.326      
5 H 0.326      
6 H 0.073      
7 H 0.073      


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 -0.471 0.471
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.180 0.000 0.000
y 0.000 5.575 0.000
z 0.000 0.000 5.745


<r2> (average value of r2) Å2
<r2> 36.903
(<r2>)1/2 6.075