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: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-2651.723693
Energy at 298.15K-2651.729177
Nuclear repulsion energy143.865330
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 PBEPBE/cc-pVTZ
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' 3171 3150 1.75      
2 A' 3139 3117 3.13      
3 A' 3078 3057 0.08      
4 A' 1611 1600 58.10      
5 A' 1357 1347 9.15      
6 A' 1236 1228 24.09      
7 A' 982 976 11.16      
8 A' 599 595 25.32      
9 A' 337 335 0.05      
10 A" 939 933 33.98      
11 A" 883 877 27.18      
12 A" 583 579 15.79      

Unscaled Zero Point Vibrational Energy (zpe) 8957.2 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 8895.4 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 PBEPBE/cc-pVTZ
ABC
1.83174 0.13655 0.12708

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.457 -1.115 0.000
C2 -0.443 -2.092 0.000
Br3 0.000 0.730 0.000
H4 1.534 -1.269 0.000
H5 -0.103 -3.130 0.000
H6 -1.515 -1.904 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.32831.90041.08832.09112.1240
C21.32832.85682.14091.09111.0890
Br31.90042.85682.51993.86083.0389
H41.08832.14092.51992.47803.1144
H52.09111.09113.86082.47801.8694
H62.12401.08903.03893.11441.8694

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 119.282 C1 C2 H6 122.654
C2 C1 Br3 123.493 C2 C1 H4 124.435
Br3 C1 H4 112.072 H5 C2 H6 118.064
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.115      
2 C -0.223      
3 Br -0.039      
4 H 0.124      
5 H 0.126      
6 H 0.127      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.238 -1.359 0.000 1.379
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.208 -0.514 0.000
y -0.514 -27.307 0.000
z 0.000 0.000 -32.970
Traceless
 xyz
x 0.930 -0.514 0.000
y -0.514 3.783 0.000
z 0.000 0.000 -4.713
Polar
3z2-r2-9.425
x2-y2-1.902
xy-0.514
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.658 0.551 0.000
y 0.551 9.474 0.000
z 0.000 0.000 3.901


<r2> (average value of r2) Å2
<r2> 93.120
(<r2>)1/2 9.650