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

using model chemistry: BLYP/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 BLYP/6-311G**
 hartrees
Energy at 0K-2653.345312
Energy at 298.15K 
HF Energy-2653.345312
Nuclear repulsion energy160.623475
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 BLYP/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' 3026 3014 30.14 66.99 0.07 0.12
2 A' 3010 2998 1.97 138.52 0.40 0.57
3 A' 2949 2937 21.41 211.48 0.11 0.20
4 A' 1467 1461 2.70 9.04 0.75 0.86
5 A' 1451 1445 0.96 10.47 0.73 0.85
6 A' 1378 1372 4.25 4.72 0.70 0.82
7 A' 1236 1231 61.96 5.32 0.61 0.76
8 A' 1042 1038 0.09 4.15 0.51 0.68
9 A' 939 936 20.87 5.02 0.71 0.83
10 A' 515 513 18.33 19.42 0.27 0.42
11 A' 272 271 2.97 3.36 0.48 0.65
12 A" 3083 3071 14.22 34.81 0.75 0.86
13 A" 3038 3026 10.28 90.47 0.75 0.86
14 A" 1448 1443 9.20 11.40 0.75 0.86
15 A" 1230 1225 0.67 2.65 0.75 0.86
16 A" 998 995 0.23 6.00 0.75 0.86
17 A" 758 755 4.93 0.31 0.75 0.86
18 A" 252 251 0.00 0.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14045.4 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 13990.6 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 BLYP/6-311G**
ABC
0.99473 0.12010 0.11173

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.577 -2.075 0.000
C2 0.603 -1.110 0.000
Br3 0.000 0.815 0.000
H4 1.225 -1.200 0.895
H5 1.225 -1.200 -0.895
H6 -0.194 -3.109 0.000
H7 -1.205 -1.943 0.891
H8 -1.205 -1.943 -0.891

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.52432.94682.19462.19461.10291.09771.0977
C21.52432.01691.09381.09382.15222.18062.1806
Br32.94682.01692.52182.52183.92883.13873.1387
H42.19461.09382.52181.78992.54222.54143.1061
H52.19461.09382.52181.78992.54223.10612.5414
H61.10292.15223.92882.54222.54221.78171.7817
H71.09772.18063.13872.54143.10611.78171.7817
H81.09772.18063.13873.10612.54141.78171.7817

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 111.889 C1 C2 H4 112.876
C1 C2 H5 112.876 C2 C1 H6 108.956
C2 C1 H7 111.509 C2 C1 H8 111.509
Br3 C2 H4 104.372 Br3 C2 H5 104.372
H4 C2 H5 109.799 H6 C1 H7 108.125
H6 C1 H8 108.125 H7 C1 H8 108.503
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.275      
2 C -0.301      
3 Br -0.103      
4 H 0.159      
5 H 0.159      
6 H 0.111      
7 H 0.125      
8 H 0.125      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.467 -2.171 0.000 2.221
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.297 -0.980 0.000
y -0.980 -30.182 0.000
z 0.000 0.000 -32.614
Traceless
 xyz
x -0.898 -0.980 0.000
y -0.980 2.274 0.000
z 0.000 0.000 -1.375
Polar
3z2-r2-2.750
x2-y2-2.115
xy-0.980
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.125 -0.224 0.000
y -0.224 8.434 0.000
z 0.000 0.000 4.666


<r2> (average value of r2) Å2
<r2> 109.664
(<r2>)1/2 10.472