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: wB97X-D/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at wB97X-D/aug-cc-pVQZ
 hartrees
Energy at 0K-116.628124
Energy at 298.15K 
HF Energy-116.628124
Nuclear repulsion energy64.112644
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 wB97X-D/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at wB97X-D/aug-cc-pVQZ
ABC
1.02090 0.73441 0.46674

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.860
C2 0.000 0.642 -0.499
C3 0.000 -0.642 -0.499
H4 0.000 1.569 -1.040
H5 0.000 -1.569 -1.040
H6 0.911 0.000 1.453
H7 -0.911 0.000 1.453

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50321.50322.46412.46411.08731.0873
C21.50321.28311.07352.27562.24812.2481
C31.50321.28312.27561.07352.24812.2481
H42.46411.07352.27563.13773.08353.0835
H52.46412.27561.07353.13773.08353.0835
H61.08732.24812.24813.08353.08351.8228
H71.08732.24812.24813.08353.08351.8228

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.736 C1 C2 H4 145.514
C1 C3 C2 64.736 C1 C3 H5 145.514
C2 C1 C3 50.527 C2 C1 H6 119.553
C2 C1 H7 119.553 C2 C3 H5 149.749
C3 C1 H6 119.553 C3 C1 H7 119.553
C3 C2 H4 149.749 H6 C1 H7 113.898
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.225      
2 C -0.197      
3 C -0.197      
4 H 0.191      
5 H 0.191      
6 H 0.119      
7 H 0.119      


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 -0.493 0.493
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.386 0.000 0.000
y 0.000 -16.703 0.000
z 0.000 0.000 -18.483
Traceless
 xyz
x -1.792 0.000 0.000
y 0.000 2.232 0.000
z 0.000 0.000 -0.439
Polar
3z2-r2-0.878
x2-y2-2.683
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 36.701
(<r2>)1/2 6.058