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All results from a given calculation for C2H3 (vinyl)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-77.360280
Energy at 298.15K-77.361774
HF Energy-77.360280
Nuclear repulsion energy28.204674
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 PBEPBE/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3181 3152 2.36      
2 A' 3079 3051 5.46      
3 A' 2982 2955 3.81      
4 A' 1621 1606 2.17      
5 A' 1411 1398 9.38      
6 A' 1060 1051 9.84      
7 A' 720 713 27.61      
8 A" 907 899 94.03      
9 A" 808 801 12.37      

Unscaled Zero Point Vibrational Energy (zpe) 7884.3 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 7812.5 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 PBEPBE/3-21G
ABC
7.73113 1.07107 0.94074

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.049 0.727 0.000
C2 0.049 -0.589 0.000
H3 -0.688 1.530 0.000
H4 -0.880 -1.186 0.000
H5 0.980 -1.173 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.31651.08982.12672.1157
C21.31652.24341.10431.0984
H31.08982.24342.72203.1758
H42.12671.10432.72201.8599
H52.11571.09843.17581.8599

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 122.691 C1 C2 H5 122.099
C2 C1 H3 137.409 H4 C2 H5 115.210
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.165      
2 C -0.483      
3 H 0.210      
4 H 0.215      
5 H 0.223      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.631 -0.302 0.000 0.700
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.073 -1.156 0.000
y -1.156 -10.992 0.000
z 0.000 0.000 -14.525
Traceless
 xyz
x 0.685 -1.156 0.000
y -1.156 2.307 0.000
z 0.000 0.000 -2.992
Polar
3z2-r2-5.984
x2-y2-1.081
xy-1.156
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.302 -0.243 0.000
y -0.243 4.275 0.000
z 0.000 0.000 0.993


<r2> (average value of r2) Å2
<r2> 20.441
(<r2>)1/2 4.521