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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-2637.326344
Energy at 298.15K-2637.331892
HF Energy-2637.075080
Nuclear repulsion energy140.859182
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 MP4/3-21G
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' 3232 3134        
2 A' 3212 3115        
3 A' 3140 3045        
4 A' 1648 1598        
5 A' 1475 1431        
6 A' 1317 1277        
7 A' 1073 1040        
8 A' 582 564        
9 A' 344 334        
10 A" 1009 978        
11 A" 968 939        
12 A" 609 591        

Unscaled Zero Point Vibrational Energy (zpe) 9304.5 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 9023.5 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 MP4/3-21G
ABC
1.80366 0.13033 0.12155

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.464 -1.156 0.000
C2 -0.446 -2.135 0.000
Br3 0.000 0.748 0.000
H4 1.536 -1.327 0.000
H5 -0.134 -3.179 0.000
H6 -1.514 -1.934 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.33691.95961.08532.11022.1261
C21.33692.91742.13991.08961.0876
Br31.95962.91742.58203.92963.0797
H41.08532.13992.58202.49373.1100
H52.11021.08963.92962.49371.8593
H62.12611.08763.07973.11001.8593

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 120.493 C1 C2 H6 122.216
C2 C1 Br3 123.399 C2 C1 H4 123.793
Br3 C1 H4 112.808 H5 C2 H6 117.291
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability