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

using model chemistry: B2PLYP/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 B2PLYP/6-311G*
 hartrees
Energy at 0K-2652.821019
Energy at 298.15K 
HF Energy-2652.687205
Nuclear repulsion energy163.261025
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 B2PLYP/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' 3137 3137 33.27 63.08 0.44 0.61
2 A' 3123 3123 2.84 130.32 0.25 0.41
3 A' 3061 3061 21.89 157.39 0.07 0.13
4 A' 1534 1534 3.34 8.11 0.75 0.86
5 A' 1519 1519 1.63 11.90 0.72 0.84
6 A' 1444 1444 6.60 3.30 0.75 0.86
7 A' 1314 1314 61.75 3.94 0.65 0.79
8 A' 1098 1098 0.30 4.06 0.41 0.58
9 A' 990 990 15.51 5.01 0.74 0.85
10 A' 571 571 16.61 19.48 0.27 0.43
11 A' 290 290 2.03 2.45 0.49 0.66
12 A" 3191 3191 15.24 30.61 0.75 0.86
13 A" 3154 3154 9.35 89.15 0.75 0.86
14 A" 1520 1520 10.74 11.69 0.75 0.86
15 A" 1292 1292 0.89 3.57 0.75 0.86
16 A" 1061 1061 0.55 5.56 0.75 0.86
17 A" 788 788 5.02 0.25 0.75 0.86
18 A" 270 270 0.01 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14677.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14677.5 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 B2PLYP/6-311G*
ABC
1.00792 0.12473 0.11581

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.039 0.000
C2 0.599 -1.080 0.000
Br3 0.000 0.799 0.000
H4 1.220 -1.185 0.886
H5 1.220 -1.185 -0.886
H6 -0.200 -3.067 0.000
H7 -1.197 -1.902 0.884
H8 -1.197 -1.902 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51542.89522.17502.17501.09401.09001.0900
C21.51541.97181.08701.08702.14232.16432.1643
Br32.89521.97182.49212.49213.87123.08373.0837
H42.17501.08702.49211.77252.51852.52093.0802
H52.17501.08702.49211.77252.51853.08022.5209
H61.09402.14233.87122.51852.51851.76971.7697
H71.09002.16433.08372.52093.08021.76971.7673
H81.09002.16433.08373.08022.52091.76971.7673

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 111.580 C1 C2 H4 112.351
C1 C2 H5 112.351 C2 C1 H6 109.309
C2 C1 H7 111.302 C2 C1 H8 111.302
Br3 C2 H4 105.439 Br3 C2 H5 105.439
H4 C2 H5 109.233 H6 C1 H7 108.250
H6 C1 H8 108.250 H7 C1 H8 108.329
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.617      
2 C -0.496      
3 Br -0.077      
4 H 0.254      
5 H 0.254      
6 H 0.218      
7 H 0.231      
8 H 0.231      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.495 -2.137 0.000 2.193
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.260 -1.095 0.001
y -1.095 -30.355 0.023
z 0.001 0.023 -32.506
Traceless
 xyz
x -0.830 -1.095 0.001
y -1.095 2.028 0.023
z 0.001 0.023 -1.198
Polar
3z2-r2-2.396
x2-y2-1.905
xy-1.095
xz0.001
yz0.023


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.844 -0.287 -0.000
y -0.287 7.790 -0.001
z -0.000 -0.001 4.437


<r2> (average value of r2) Å2
<r2> 106.674
(<r2>)1/2 10.328