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All results from a given calculation for C2H5Br (Ethyl bromide)

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-2624.292708
Energy at 298.15K 
HF Energy-2624.292708
Nuclear repulsion energy162.860957
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 TPSSh/STO-3G
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' 3480 3480 0.57 38.23 0.73 0.84
2 A' 3337 3337 2.70 35.72 0.15 0.27
3 A' 3319 3319 0.69 56.79 0.02 0.03
4 A' 1691 1691 1.23 8.47 0.74 0.85
5 A' 1656 1656 1.22 20.47 0.75 0.86
6 A' 1572 1572 0.27 6.67 0.64 0.78
7 A' 1421 1421 39.85 2.04 0.55 0.71
8 A' 1154 1154 2.86 4.92 0.55 0.71
9 A' 1067 1067 7.79 4.68 0.72 0.84
10 A' 687 687 4.55 12.53 0.30 0.46
11 A' 295 295 1.05 2.20 0.54 0.70
12 A" 3496 3496 1.13 16.10 0.75 0.86
13 A" 3448 3448 1.48 41.17 0.75 0.86
14 A" 1682 1682 2.90 17.50 0.75 0.86
15 A" 1380 1380 0.06 12.16 0.75 0.86
16 A" 1133 1133 1.32 5.26 0.75 0.86
17 A" 822 822 3.33 0.46 0.75 0.86
18 A" 237 237 0.07 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15938.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15938.1 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 TPSSh/STO-3G
ABC
0.99694 0.12384 0.11500

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.579 -2.061 0.000
C2 0.600 -1.048 0.000
Br3 0.000 0.800 0.000
H4 1.232 -1.202 0.894
H5 1.232 -1.202 -0.894
H6 -0.178 -3.089 0.000
H7 -1.207 -1.929 0.895
H8 -1.207 -1.929 -0.895

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.55392.91892.19392.19391.10331.10161.1016
C21.55391.94351.10561.10562.18432.20112.2011
Br32.91891.94352.51532.51533.89333.11603.1160
H42.19391.10562.51531.78882.51952.54513.1111
H52.19391.10562.51531.78882.51953.11112.5451
H61.10332.18433.89332.51952.51951.79001.7900
H71.10162.20113.11602.54513.11111.79001.7896
H81.10162.20113.11603.11112.54511.79001.7896

picture of Ethyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br3 112.674 C1 C2 H4 110.023
C1 C2 H5 110.023 C2 C1 H6 109.404
C2 C1 H7 110.819 C2 C1 H8 110.819
Br3 C2 H4 107.994 Br3 C2 H5 107.994
H4 C2 H5 107.990 H6 C1 H7 108.548
H6 C1 H8 108.548 H7 C1 H8 108.641
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.200      
2 C -0.166      
3 Br -0.036      
4 H 0.086      
5 H 0.086      
6 H 0.075      
7 H 0.077      
8 H 0.077      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.378 -1.529 0.000 1.575
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 1.845 -0.414 0.000
y -0.414 3.744 0.000
z 0.000 0.000 1.680


<r2> (average value of r2) Å2
<r2> 105.836
(<r2>)1/2 10.288