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All results from a given calculation for C2H3Br (vinyl bromide)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-2647.992493
Energy at 298.15K-2647.998084
HF Energy-2647.529555
Nuclear repulsion energy146.010459
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 MP2/6-31G(2df,p)
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' 3329 3144 0.39      
2 A' 3277 3095 4.14      
3 A' 3221 3042 0.35      
4 A' 1657 1565 32.01      
5 A' 1422 1344 7.71      
6 A' 1303 1231 18.74      
7 A' 1038 980 8.45      
8 A' 661 624 16.08      
9 A' 355 335 0.04      
10 A" 1004 948 28.46      
11 A" 934 882 23.41      
12 A" 616 582 11.23      

Unscaled Zero Point Vibrational Energy (zpe) 9408.1 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 8886.0 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 MP2/6-31G(2df,p)
ABC
1.82763 0.14136 0.13121

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.463 -1.085 0.000
C2 -0.446 -2.056 0.000
Br3 0.000 0.715 0.000
H4 1.532 -1.248 0.000
H5 -0.123 -3.090 0.000
H6 -1.509 -1.856 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.32931.85901.08142.08842.1170
C21.32932.80652.13631.08331.0817
Br31.85902.80652.48983.80702.9816
H41.08142.13632.48982.47643.1011
H52.08841.08333.80702.47641.8552
H62.11701.08172.98163.10111.8552

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 119.563 C1 C2 H6 122.495
C2 C1 Br3 122.479 C2 C1 H4 124.476
Br3 C1 H4 113.046 H5 C2 H6 117.942
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability