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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-2639.507886
Energy at 298.15K-2639.513490
Nuclear repulsion energy143.099869
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' 3291 3141 2.59      
2 A' 3270 3121 2.15      
3 A' 3193 3048 0.02      
4 A' 1707 1629 47.89      
5 A' 1475 1408 9.14      
6 A' 1320 1260 32.15      
7 A' 1071 1023 10.10      
8 A' 611 584 21.82      
9 A' 357 341 0.20      
10 A" 1026 980 38.38      
11 A" 1005 959 67.19      
12 A" 633 604 21.17      

Unscaled Zero Point Vibrational Energy (zpe) 9478.6 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 9048.2 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
1.83991 0.13486 0.12565

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 0.458 -1.133 0.000
C2 -0.441 -2.100 0.000
Br3 0.000 0.735 0.000
H4 1.525 -1.299 0.000
H5 -0.124 -3.137 0.000
H6 -1.504 -1.898 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.31971.92381.08042.08682.1058
C21.31972.86902.12301.08471.0825
Br31.92382.86902.54263.87453.0323
H41.08042.12302.54262.47003.0883
H52.08681.08473.87452.47001.8549
H62.10581.08253.03233.08831.8549

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 120.119 C1 C2 H6 122.158
C2 C1 Br3 123.312 C2 C1 H4 124.097
Br3 C1 H4 112.591 H5 C2 H6 117.722
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 -0.508      
2 C -0.387      
3 Br 0.142      
4 H 0.276      
5 H 0.237      
6 H 0.240      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.205 -1.426 0.000 1.441
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.539 -0.339 0.000
y -0.339 -26.487 0.000
z 0.000 0.000 -32.817
Traceless
 xyz
x 1.114 -0.339 0.000
y -0.339 4.190 0.000
z 0.000 0.000 -5.304
Polar
3z2-r2-10.608
x2-y2-2.051
xy-0.339
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.808 0.428 0.000
y 0.428 7.649 0.000
z 0.000 0.000 1.392


<r2> (average value of r2) Å2
<r2> 93.528
(<r2>)1/2 9.671