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: HF/daug-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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-2649.945095
Energy at 298.15K-2649.950776
HF Energy-2649.945095
Nuclear repulsion energy145.143557
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 HF/daug-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' 3387 3064 5.09      
2 A' 3372 3050 2.86      
3 A' 3293 2979 0.85      
4 A' 1796 1624 46.44      
5 A' 1520 1375 12.75      
6 A' 1389 1256 33.97      
7 A' 1108 1002 7.38      
8 A' 650 588 28.06      
9 A' 372 337 0.06      
10 A" 1078 975 49.96      
11 A" 1078 975 18.41      
12 A" 653 591 18.00      

Unscaled Zero Point Vibrational Energy (zpe) 9847.7 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 8908.2 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 HF/daug-cc-pVTZ
ABC
1.87575 0.13893 0.12935

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.453 -1.113 0.000
C2 -0.437 -2.070 0.000
Br3 0.000 0.724 0.000
H4 1.510 -1.278 0.000
H5 -0.112 -3.094 0.000
H6 -1.492 -1.878 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.30781.89181.06932.06002.0905
C21.30782.82852.10221.07381.0719
Br31.89182.82852.50723.81943.0000
H41.06932.10222.50722.43443.0612
H52.06001.07383.81942.43441.8389
H62.09051.07193.00003.06121.8389

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 119.426 C1 C2 H6 122.605
C2 C1 Br3 123.227 C2 C1 H4 124.035
Br3 C1 H4 112.738 H5 C2 H6 117.969
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.390      
2 C -1.563      
3 Br -0.032      
4 H 0.669      
5 H 0.675      
6 H 0.640      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.218 -1.744 0.000 1.758
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.272 -0.351 0.000
y -0.351 -27.301 0.000
z 0.000 0.000 -33.422
Traceless
 xyz
x 1.089 -0.351 0.000
y -0.351 4.046 0.000
z 0.000 0.000 -5.135
Polar
3z2-r2-10.270
x2-y2-1.971
xy-0.351
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.263 0.688 0.000
y 0.688 9.407 0.000
z 0.000 0.000 5.231


<r2> (average value of r2) Å2
<r2> 91.864
(<r2>)1/2 9.585