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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-90.550702
Energy at 298.15K-90.556161
HF Energy-90.345413
Nuclear repulsion energy50.149447
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/LANL2DZ
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' 3272 3151 14.49      
2 A' 3238 3119 8.34      
3 A' 3151 3035 2.57      
4 A' 1609 1549 37.30      
5 A' 1438 1385 16.99      
6 A' 1313 1265 28.95      
7 A' 1045 1006 10.67      
8 A' 561 540 12.35      
9 A' 331 319 0.13      
10 A" 996 959 83.62      
11 A" 887 854 20.77      
12 A" 574 553 20.00      

Unscaled Zero Point Vibrational Energy (zpe) 9206.3 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 8866.6 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/LANL2DZ
ABC
1.77534 0.12759 0.11904

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.467 -1.159 0.000
C2 -0.452 -2.163 0.000
Br3 0.000 0.756 0.000
H4 1.545 -1.333 0.000
H5 -0.110 -3.203 0.000
H6 -1.529 -1.983 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.36121.97081.09182.12412.1602
C21.36122.95342.16261.09501.0924
Br31.97082.95342.59813.96033.1369
H41.09182.16262.59812.49723.1425
H52.12411.09503.96032.49721.8719
H62.16021.09243.13693.14251.8719

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 119.316 C1 C2 H6 123.003
C2 C1 Br3 123.808 C2 C1 H4 123.300
Br3 C1 H4 112.893 H5 C2 H6 117.681
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability