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 C2H3 (vinyl)

using model chemistry: B97D3/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B97D3/aug-cc-pVQZ
 hartrees
Energy at 0K-77.887809
Energy at 298.15K-77.889273
HF Energy-77.887809
Nuclear repulsion energy28.400724
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 B97D3/aug-cc-pVQZ
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' 3183 3183 0.78      
2 A' 3075 3075 5.23      
3 A' 2981 2981 7.90      
4 A' 1613 1613 1.54      
5 A' 1364 1364 8.07      
6 A' 1022 1022 9.29      
7 A' 691 691 22.67      
8 A" 893 893 70.72      
9 A" 783 783 16.32      

Unscaled Zero Point Vibrational Energy (zpe) 7802.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7802.8 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 B97D3/aug-cc-pVQZ
ABC
7.89184 1.08447 0.95345

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.048 0.721 0.000
C2 0.048 -0.586 0.000
H3 -0.667 1.533 0.000
H4 -0.881 -1.169 0.000
H5 0.970 -1.169 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.30711.08232.10592.1025
C21.30712.23671.09651.0907
H31.08232.23672.71063.1592
H42.10591.09652.71061.8510
H52.10251.09073.15921.8510

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 122.116 C1 C2 H5 122.266
C2 C1 H3 138.621 H4 C2 H5 115.618
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.457      
2 C -0.748      
3 H 0.381      
4 H 0.422      
5 H 0.401      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.585 -0.329 0.000 0.671
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.486 -1.169 0.000
y -1.169 -11.461 0.000
z 0.000 0.000 -14.828
Traceless
 xyz
x 0.658 -1.169 0.000
y -1.169 2.196 0.000
z 0.000 0.000 -2.854
Polar
3z2-r2-5.708
x2-y2-1.025
xy-1.169
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.659 -0.062 0.000
y -0.062 5.357 0.000
z 0.000 0.000 3.324


<r2> (average value of r2) Å2
<r2> 20.525
(<r2>)1/2 4.530