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/6-31G**

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/6-31G**
 hartrees
Energy at 0K-77.857390
Energy at 298.15K-77.858919
HF Energy-77.857390
Nuclear repulsion energy28.427123
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/6-31G**
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' 3273 3110 1.53      
2 A' 3207 3048 5.27      
3 A' 3116 2961 2.41      
4 A' 1697 1613 1.77      
5 A' 1409 1339 5.53      
6 A' 1078 1024 8.16      
7 A' 741 704 16.69      
8 A" 950 903 70.62      
9 A" 862 819 12.28      

Unscaled Zero Point Vibrational Energy (zpe) 8165.3 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 7760.3 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/6-31G**
ABC
7.73644 1.09109 0.95623

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.050 0.723 0.000
C2 0.050 -0.586 0.000
H3 -0.699 1.503 0.000
H4 -0.876 -1.165 0.000
H5 0.976 -1.157 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5
C11.30871.08162.10232.0956
C21.30872.21931.09181.0880
H31.08162.21932.67403.1437
H42.10231.09182.67401.8516
H52.09561.08803.14371.8516

picture of vinyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 122.019 C1 C2 H5 121.677
C2 C1 H3 136.192 H4 C2 H5 116.304
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.119      
2 C -0.298      
3 H 0.141      
4 H 0.135      
5 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.554 -0.212 0.000 0.593
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.977 -1.036 0.000
y -1.036 -11.082 0.000
z 0.000 0.000 -14.305
Traceless
 xyz
x 0.717 -1.036 0.000
y -1.036 2.059 0.000
z 0.000 0.000 -2.775
Polar
3z2-r2-5.551
x2-y2-0.895
xy-1.036
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.510 -0.277 0.000
y -0.277 4.448 0.000
z 0.000 0.000 1.329


<r2> (average value of r2) Å2
<r2> 20.166
(<r2>)1/2 4.491