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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-2638.837608
Energy at 298.15K-2638.843131
Nuclear repulsion energy142.026088
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 PBEPBE/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' 3194 3165 3.51      
2 A' 3169 3141 2.30      
3 A' 3098 3069 0.02      
4 A' 1636 1621 54.53      
5 A' 1423 1410 9.42      
6 A' 1272 1260 29.52      
7 A' 1028 1019 10.95      
8 A' 588 583 22.84      
9 A' 343 340 0.28      
10 A" 974 965 55.87      
11 A" 929 921 41.03      
12 A" 607 601 20.21      

Unscaled Zero Point Vibrational Energy (zpe) 9130.1 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 9047.0 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 PBEPBE/3-21G
ABC
1.81208 0.13283 0.12375

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.461 -1.140 0.000
C2 -0.444 -2.117 0.000
Br3 0.000 0.741 0.000
H4 1.539 -1.304 0.000
H5 -0.121 -3.162 0.000
H6 -1.517 -1.916 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6
C11.33141.93661.09022.10422.1248
C21.33142.89182.14311.09441.0919
Br31.93662.89182.55873.90503.0593
H41.09022.14312.55872.49203.1168
H52.10421.09443.90502.49201.8719
H62.12481.09193.05933.11681.8719

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 120.007 C1 C2 H6 122.212
C2 C1 Br3 123.412 C2 C1 H4 124.204
Br3 C1 H4 112.384 H5 C2 H6 117.781
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.479      
2 C -0.361      
3 Br 0.141      
4 H 0.256      
5 H 0.220      
6 H 0.223      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.207 -1.272 0.000 1.288
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.630 -0.378 0.000
y -0.378 -26.598 0.000
z 0.000 0.000 -32.781
Traceless
 xyz
x 1.060 -0.378 0.000
y -0.378 4.107 0.000
z 0.000 0.000 -5.167
Polar
3z2-r2-10.334
x2-y2-2.032
xy-0.378
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.879 0.396 0.000
y 0.396 7.912 0.000
z 0.000 0.000 1.430


<r2> (average value of r2) Å2
<r2> 94.725
(<r2>)1/2 9.733