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

using model chemistry: HF/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-2651.041463
Energy at 298.15K 
HF Energy-2651.041463
Nuclear repulsion energy163.832765
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 HF/6-311G**
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' 3257 2959 37.11 89.79 0.05 0.09
2 A' 3232 2936 10.30 109.17 0.58 0.74
3 A' 3167 2877 28.42 153.53 0.08 0.14
4 A' 1615 1467 1.83 6.64 0.75 0.86
5 A' 1611 1463 1.59 10.86 0.68 0.81
6 A' 1537 1397 2.76 2.32 0.75 0.86
7 A' 1402 1274 85.08 4.52 0.61 0.76
8 A' 1160 1054 0.66 4.66 0.28 0.43
9 A' 1039 944 14.23 5.96 0.72 0.84
10 A' 599 544 32.08 27.89 0.29 0.45
11 A' 307 279 2.57 2.81 0.45 0.62
12 A" 3319 3016 14.52 44.99 0.75 0.86
13 A" 3257 2959 17.56 77.24 0.75 0.86
14 A" 1603 1456 7.70 10.99 0.75 0.86
15 A" 1371 1245 0.62 3.47 0.75 0.86
16 A" 1130 1026 0.48 4.33 0.75 0.86
17 A" 831 755 3.42 0.21 0.75 0.86
18 A" 279 253 0.02 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15357.3 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 13952.1 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 HF/6-311G**
ABC
1.01810 0.12533 0.11640

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.037 0.000
C2 0.597 -1.073 0.000
Br3 0.000 0.797 0.000
H4 1.211 -1.175 0.881
H5 1.211 -1.175 -0.881
H6 -0.190 -3.056 0.000
H7 -1.190 -1.903 0.880
H8 -1.190 -1.903 -0.880

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51562.89122.16802.16801.08751.08341.0834
C21.51561.96301.07831.07832.13292.15832.1583
Br32.89121.96302.47572.47573.85693.07903.0790
H42.16801.07832.47571.76152.50542.50953.0654
H52.16801.07832.47571.76152.50543.06542.5095
H61.08752.13293.85692.50542.50541.76111.7611
H71.08342.15833.07902.50953.06541.76111.7593
H81.08342.15833.07903.06542.50951.76111.7593

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 111.784 C1 C2 H4 112.299
C1 C2 H5 112.299 C2 C1 H6 108.935
C2 C1 H7 111.195 C2 C1 H8 111.195
Br3 C2 H4 105.237 Br3 C2 H5 105.237
H4 C2 H5 109.523 H6 C1 H7 108.436
H6 C1 H8 108.436 H7 C1 H8 108.565
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.229      
2 C -0.245      
3 Br -0.140      
4 H 0.146      
5 H 0.146      
6 H 0.098      
7 H 0.112      
8 H 0.112      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.558 -2.410 0.000 2.474
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.124 -1.095 0.000
y -1.095 -30.321 0.000
z 0.000 0.000 -32.468
Traceless
 xyz
x -0.730 -1.095 0.000
y -1.095 1.975 0.000
z 0.000 0.000 -1.246
Polar
3z2-r2-2.491
x2-y2-1.803
xy-1.095
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.726 -0.361 0.000
y -0.361 7.667 0.000
z 0.000 0.000 4.343


<r2> (average value of r2) Å2
<r2> 106.138
(<r2>)1/2 10.302