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

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-2639.742243
Energy at 298.15K-2639.747839
Nuclear repulsion energy144.605851
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 mPW1PW91/3-21G*
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' 3285 3119 2.34      
2 A' 3253 3089 3.37      
3 A' 3190 3029 0.01      
4 A' 1690 1605 42.71      
5 A' 1466 1392 9.90      
6 A' 1329 1262 23.48      
7 A' 1070 1016 12.08      
8 A' 639 607 20.53      
9 A' 356 338 0.06      
10 A" 1008 958 37.43      
11 A" 979 930 57.91      
12 A" 618 587 18.17      

Unscaled Zero Point Vibrational Energy (zpe) 9441.7 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 8965.8 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 mPW1PW91/3-21G*
ABC
1.83050 0.13828 0.12857

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.460 -1.109 0.000
C2 -0.443 -2.078 0.000
Br3 0.000 0.725 0.000
H4 1.529 -1.274 0.000
H5 -0.127 -3.116 0.000
H6 -1.506 -1.875 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.32391.89171.08182.09052.1102
C21.32392.83822.12951.08491.0828
Br31.89172.83822.51703.84353.0054
H41.08182.12952.51702.47703.0945
H52.09051.08493.84352.47701.8553
H62.11021.08283.00543.09451.8553

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 120.095 C1 C2 H6 122.188
C2 C1 Br3 122.946 C2 C1 H4 124.242
Br3 C1 H4 112.812 H5 C2 H6 117.717
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.277      
2 C -0.429      
3 Br -0.031      
4 H 0.261      
5 H 0.234      
6 H 0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.209 -1.305 0.000 1.322
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.488 0.570 0.000
y 0.570 7.827 0.000
z 0.000 0.000 2.278


<r2> (average value of r2) Å2
<r2> 91.781
(<r2>)1/2 9.580