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

using model chemistry: wB97X-D/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 wB97X-D/3-21G
 hartrees
Energy at 0K-2640.608118
Energy at 298.15K 
HF Energy-2640.608118
Nuclear repulsion energy162.264284
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 wB97X-D/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' 3162 3162 19.62 55.12 0.19 0.32
2 A' 3148 3148 0.12 119.15 0.38 0.55
3 A' 3082 3082 11.68 121.63 0.06 0.11
4 A' 1569 1569 6.01 19.12 0.74 0.85
5 A' 1539 1539 7.98 16.10 0.75 0.86
6 A' 1480 1480 13.16 6.18 0.67 0.80
7 A' 1337 1337 45.54 4.98 0.62 0.76
8 A' 1103 1103 4.37 6.15 0.56 0.72
9 A' 1007 1007 18.26 5.00 0.75 0.86
10 A' 596 596 12.93 19.90 0.33 0.50
11 A' 297 297 2.02 3.43 0.55 0.71
12 A" 3224 3224 7.25 37.30 0.75 0.86
13 A" 3173 3173 6.36 76.68 0.75 0.86
14 A" 1559 1559 12.43 23.67 0.75 0.86
15 A" 1319 1319 1.09 8.90 0.75 0.86
16 A" 1077 1077 0.24 9.73 0.75 0.86
17 A" 802 802 9.42 1.41 0.75 0.86
18 A" 259 259 0.01 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14865.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14865.9 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 wB97X-D/3-21G
ABC
0.99280 0.12339 0.11450

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.579 -2.047 0.000
C2 0.607 -1.093 0.000
Br3 0.000 0.804 0.000
H4 1.222 -1.206 0.891
H5 1.222 -1.206 -0.891
H6 -0.212 -3.080 0.000
H7 -1.199 -1.896 0.888
H8 -1.199 -1.896 -0.888

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.52252.90892.17862.17861.09621.09291.0929
C21.52251.99101.08881.08882.14972.16662.1666
Br32.90891.99102.51532.51533.88943.08433.0843
H42.17861.08882.51531.78252.52262.51723.0823
H52.17861.08882.51531.78252.52263.08232.5172
H61.09622.14973.88942.52262.52261.77831.7783
H71.09292.16663.08432.51723.08231.77831.7752
H81.09292.16663.08433.08232.51721.77831.7752

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 111.068 C1 C2 H4 112.015
C1 C2 H5 112.015 C2 C1 H6 109.264
C2 C1 H7 110.797 C2 C1 H8 110.797
Br3 C2 H4 105.752 Br3 C2 H5 105.752
H4 C2 H5 109.876 H6 C1 H7 108.653
H6 C1 H8 108.653 H7 C1 H8 108.621
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.606      
2 C -0.653      
3 Br 0.027      
4 H 0.271      
5 H 0.271      
6 H 0.224      
7 H 0.234      
8 H 0.234      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.467 -2.080 0.000 2.132
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.436 -0.856 0.000
y -0.856 -29.850 0.000
z 0.000 0.000 -31.777
Traceless
 xyz
x -0.622 -0.856 0.000
y -0.856 1.756 0.000
z 0.000 0.000 -1.134
Polar
3z2-r2-2.267
x2-y2-1.586
xy-0.856
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.660 -0.535 0.000
y -0.535 6.775 0.000
z 0.000 0.000 3.361


<r2> (average value of r2) Å2
<r2> 107.161
(<r2>)1/2 10.352