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: M06-2X/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 M06-2X/3-21G
 hartrees
Energy at 0K-77.427018
Energy at 298.15K-77.428593
HF Energy-77.427018
Nuclear repulsion energy28.414627
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 M06-2X/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' 3228 3095 0.91      
2 A' 3208 3076 3.89      
3 A' 3132 3003 0.71      
4 A' 1685 1616 3.31      
5 A' 1466 1406 7.24      
6 A' 1129 1082 7.54      
7 A' 784 752 18.68      
8 A" 1003 962 78.95      
9 A" 888 852 30.51      

Unscaled Zero Point Vibrational Energy (zpe) 8262.2 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 7921.0 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 M06-2X/3-21G
ABC
7.75422 1.08890 0.95482

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.050 0.724 0.000
C2 0.050 -0.586 0.000
H3 -0.704 1.498 0.000
H4 -0.870 -1.173 0.000
H5 0.975 -1.157 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.31031.08012.10852.0968
C21.31032.21591.09101.0874
H31.08012.21592.67603.1415
H42.10851.09102.67601.8448
H52.09681.08743.14151.8448

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 122.560 C1 C2 H5 121.700
C2 C1 H3 135.731 H4 C2 H5 115.741
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.167      
2 C -0.482      
3 H 0.214      
4 H 0.213      
5 H 0.222      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.598 -0.251 0.000 0.648
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.103 -1.092 0.000
y -1.092 -11.176 0.000
z 0.000 0.000 -14.595
Traceless
 xyz
x 0.782 -1.092 0.000
y -1.092 2.173 0.000
z 0.000 0.000 -2.955
Polar
3z2-r2-5.911
x2-y2-0.927
xy-1.092
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.213 -0.261 0.000
y -0.261 4.164 0.000
z 0.000 0.000 0.961


<r2> (average value of r2) Å2
<r2> 20.285
(<r2>)1/2 4.504