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

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-2621.302543
Energy at 298.15K-2621.308043
HF Energy-2621.167412
Nuclear repulsion energy143.270651
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/STO-3G
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' 3616 3152 0.46      
2 A' 3500 3052 1.67      
3 A' 3457 3014 15.02      
4 A' 1764 1538 14.20      
5 A' 1555 1356 18.87      
6 A' 1414 1233 15.10      
7 A' 1123 979 4.13      
8 A' 716 625 9.15      
9 A' 364 318 0.44      
10 A" 1101 960 9.85      
11 A" 975 850 11.95      
12 A" 627 546 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 10105.4 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 8810.9 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 MP2/STO-3G
ABC
1.81620 0.13524 0.12587

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.459 -1.103 0.000
C2 -0.443 -2.108 0.000
Br3 0.000 0.733 0.000
H4 1.541 -1.316 0.000
H5 -0.109 -3.154 0.000
H6 -1.527 -1.927 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.35001.89301.10302.12812.1493
C21.35002.87532.13661.09871.0986
Br31.89302.87532.56383.88913.0667
H41.10302.13662.56382.47043.1281
H52.12811.09873.88912.47041.8757
H62.14931.09863.06673.12811.8757

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 120.355 C1 C2 H6 122.423
C2 C1 Br3 124.053 C2 C1 H4 120.825
Br3 C1 H4 115.122 H5 C2 H6 117.222
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability