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 C2H3Br (vinyl bromide)

using model chemistry: BLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-31G
 hartrees
Energy at 0K-2649.507754
Energy at 298.15K-2649.513191
Nuclear repulsion energy140.467359
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 BLYP/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' 3194 3170 9.63      
2 A' 3180 3155 0.62      
3 A' 3093 3070 0.82      
4 A' 1625 1613 49.28      
5 A' 1409 1398 9.89      
6 A' 1258 1248 38.00      
7 A' 1008 1000 10.81      
8 A' 529 525 29.57      
9 A' 326 323 0.85      
10 A" 953 946 71.41      
11 A" 922 915 12.04      
12 A" 590 586 16.14      

Unscaled Zero Point Vibrational Energy (zpe) 9043.2 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 8974.5 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 BLYP/6-31G
ABC
1.74476 0.13043 0.12135

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.475 -1.168 0.000
C2 -0.455 -2.128 0.000
Br3 0.000 0.748 0.000
H4 1.554 -1.315 0.000
H5 -0.153 -3.180 0.000
H6 -1.525 -1.914 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.33731.97391.08892.10812.1351
C21.33732.91232.16751.09431.0914
Br31.97392.91232.58303.93123.0680
H41.08892.16752.58302.52833.1370
H52.10811.09433.93122.52831.8673
H62.13511.09143.06803.13701.8673

picture of vinyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 119.889 C1 C2 H6 122.747
C2 C1 Br3 121.990 C2 C1 H4 126.301
Br3 C1 H4 111.709 H5 C2 H6 117.364
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.316      
2 C -0.183      
3 Br 0.054      
4 H 0.168      
5 H 0.135      
6 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.252 -1.636 0.000 1.655
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.838 -0.417 0.000
y -0.417 -26.809 0.000
z 0.000 0.000 -32.656
Traceless
 xyz
x 0.894 -0.417 0.000
y -0.417 3.938 0.000
z 0.000 0.000 -4.832
Polar
3z2-r2-9.664
x2-y2-2.030
xy-0.417
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.153 0.398 0.000
y 0.398 8.324 0.000
z 0.000 0.000 1.636


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000