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/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-77.883920
Energy at 298.15K-77.885381
HF Energy-77.883920
Nuclear repulsion energy28.387374
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/Def2TZVPP
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' 3186 3142 1.07      
2 A' 3079 3037 5.79      
3 A' 2986 2945 7.36      
4 A' 1617 1595 1.47      
5 A' 1365 1346 8.06      
6 A' 1022 1008 9.53      
7 A' 691 682 23.93      
8 A" 892 880 71.52      
9 A" 783 772 16.08      

Unscaled Zero Point Vibrational Energy (zpe) 7810.8 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 7703.8 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/Def2TZVPP
ABC
7.87891 1.08365 0.95263

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.048 0.721 0.000
C2 0.048 -0.587 0.000
H3 -0.669 1.533 0.000
H4 -0.880 -1.171 0.000
H5 0.971 -1.169 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.30761.08312.10742.1032
C21.30762.23731.09711.0914
H31.08312.23732.71163.1604
H42.10741.09712.71161.8518
H52.10321.09143.16041.8518

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 122.174 C1 C2 H5 122.237
C2 C1 H3 138.531 H4 C2 H5 115.589
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.128      
2 C -0.143      
3 H 0.085      
4 H 0.093      
5 H 0.093      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.598 -0.327 0.000 0.682
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.398 -1.153 0.000
y -1.153 -11.381 0.000
z 0.000 0.000 -14.743
Traceless
 xyz
x 0.665 -1.153 0.000
y -1.153 2.189 0.000
z 0.000 0.000 -2.854
Polar
3z2-r2-5.707
x2-y2-1.016
xy-1.153
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.142 -0.121 0.000
y -0.121 5.168 0.000
z 0.000 0.000 2.599


<r2> (average value of r2) Å2
<r2> 20.484
(<r2>)1/2 4.526