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: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-2647.748064
Energy at 298.15K-2647.753570
HF Energy-2647.338045
Nuclear repulsion energy143.306253
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 MP4/6-31G*
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' 3274 3126        
2 A' 3240 3093        
3 A' 3178 3034        
4 A' 1656 1581        
5 A' 1429 1364        
6 A' 1298 1240        
7 A' 1037 990        
8 A' 603 576        
9 A' 348 333        
10 A" 967 923        
11 A" 896 855        
12 A" 589 563        

Unscaled Zero Point Vibrational Energy (zpe) 9257.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 8838.9 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 MP4/6-31G*
ABC
1.77690 0.13612 0.12644

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.470 -1.122 0.000
C2 -0.451 -2.093 0.000
Br3 0.000 0.731 0.000
H4 1.544 -1.291 0.000
H5 -0.137 -3.135 0.000
H6 -1.518 -1.883 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.33811.91201.08692.10272.1288
C21.33812.85992.15001.08911.0875
Br31.91202.85992.54383.86923.0233
H41.08692.15002.54382.49523.1187
H52.10271.08913.86922.49521.8649
H62.12881.08753.02333.11871.8649

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 119.711 C1 C2 H6 122.377
C2 C1 Br3 122.281 C2 C1 H4 124.575
Br3 C1 H4 113.144 H5 C2 H6 117.912
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability