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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-2637.294034
Energy at 298.15K-2637.299625
HF Energy-2637.075854
Nuclear repulsion energy141.507671
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 MP2/3-21G
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' 3289 3140 4.96      
2 A' 3267 3118 2.57      
3 A' 3194 3049 0.57      
4 A' 1671 1595 29.55      
5 A' 1501 1432 14.08      
6 A' 1342 1281 31.79      
7 A' 1090 1040 6.08      
8 A' 598 570 13.88      
9 A' 352 336 0.15      
10 A" 1041 993 51.91      
11 A" 999 954 33.34      
12 A" 625 596 16.10      

Unscaled Zero Point Vibrational Energy (zpe) 9483.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 9051.8 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 MP2/3-21G
ABC
1.82061 0.13152 0.12266

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.462 -1.149 0.000
C2 -0.444 -2.126 0.000
Br3 0.000 0.745 0.000
H4 1.529 -1.323 0.000
H5 -0.131 -3.165 0.000
H6 -1.508 -1.926 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.33201.94921.08132.10162.1178
C21.33202.90482.12991.08541.0836
Br31.94922.90482.57163.91223.0669
H41.08132.12992.57162.47993.0968
H52.10161.08543.91222.47991.8534
H62.11781.08363.06693.09681.8534

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 120.424 C1 C2 H6 122.164
C2 C1 Br3 123.470 C2 C1 H4 123.572
Br3 C1 H4 112.958 H5 C2 H6 117.412
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability