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All results from a given calculation for C2H3 (vinyl)

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-76.905861
Energy at 298.15K-76.907354
HF Energy-76.905861
Nuclear repulsion energy28.183658
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 B3PW91/STO-3G
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' 3492 3090 1.31      
2 A' 3463 3065 4.67      
3 A' 3347 2962 18.94      
4 A' 1773 1569 4.21      
5 A' 1527 1351 3.08      
6 A' 1173 1038 6.71      
7 A' 798 707 9.09      
8 A" 990 876 37.39      
9 A" 915 809 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 8738.5 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 7733.6 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 B3PW91/STO-3G
ABC
7.47423 1.07768 0.94187

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.053 0.731 0.000
C2 0.053 -0.587 0.000
H3 -0.746 1.487 0.000
H4 -0.872 -1.186 0.000
H5 0.985 -1.168 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.31791.09972.12842.1159
C21.31792.22251.10211.0988
H31.09972.22252.67623.1699
H42.12841.10212.67621.8575
H52.11591.09883.16991.8575

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 122.921 C1 C2 H5 121.955
C2 C1 H3 133.450 H4 C2 H5 115.124
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.063      
2 C -0.197      
3 H 0.086      
4 H 0.087      
5 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.395 -0.070 0.000 0.401
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.057 -0.638 0.000
y -0.638 -10.719 0.000
z 0.000 0.000 -12.648
Traceless
 xyz
x 0.627 -0.638 0.000
y -0.638 1.133 0.000
z 0.000 0.000 -1.760
Polar
3z2-r2-3.520
x2-y2-0.337
xy-0.638
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.271 -0.261 0.000
y -0.261 2.514 0.000
z 0.000 0.000 0.429


<r2> (average value of r2) Å2
<r2> 19.744
(<r2>)1/2 4.443