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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-311G*
 hartrees
Energy at 0K-2652.945187
Energy at 298.15K 
HF Energy-2652.945187
Nuclear repulsion energy163.955362
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 HSEh1PBE/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' 3131 3004 30.82 68.89 0.48 0.65
2 A' 3115 2989 3.82 130.42 0.23 0.37
3 A' 3053 2930 21.52 166.18 0.07 0.13
4 A' 1514 1453 3.82 8.75 0.75 0.86
5 A' 1499 1439 1.90 10.67 0.73 0.84
6 A' 1424 1366 8.85 4.21 0.75 0.86
7 A' 1298 1245 58.38 4.24 0.67 0.80
8 A' 1099 1054 0.16 3.70 0.45 0.62
9 A' 989 949 18.05 4.85 0.70 0.82
10 A' 579 556 16.07 18.22 0.26 0.42
11 A' 289 277 2.18 2.23 0.51 0.67
12 A" 3184 3056 14.61 27.90 0.75 0.86
13 A" 3147 3020 8.11 93.45 0.75 0.86
14 A" 1499 1439 12.12 11.56 0.75 0.86
15 A" 1279 1228 1.10 3.42 0.75 0.86
16 A" 1050 1008 0.38 5.45 0.75 0.86
17 A" 780 748 6.10 0.24 0.75 0.86
18 A" 269 259 0.00 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14598.9 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 14009.1 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 HSEh1PBE/6-311G*
ABC
1.01372 0.12596 0.11695

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.571 -2.029 0.000
C2 0.596 -1.073 0.000
Br3 0.000 0.795 0.000
H4 1.219 -1.178 0.886
H5 1.219 -1.178 -0.886
H6 -0.197 -3.059 0.000
H7 -1.196 -1.895 0.884
H8 -1.196 -1.895 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50802.88042.17092.17091.09561.09161.0916
C21.50801.96021.08881.08882.13852.16072.1607
Br32.88041.96022.48262.48263.85853.07333.0733
H42.17091.08882.48261.77282.51602.51953.0795
H52.17091.08882.48261.77282.51603.07952.5195
H61.09562.13853.85852.51602.51601.77051.7705
H71.09162.16073.07332.51953.07951.77051.7688
H81.09162.16073.07333.07952.51951.77051.7688

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 111.641 C1 C2 H4 112.437
C1 C2 H5 112.437 C2 C1 H6 109.425
C2 C1 H7 111.433 C2 C1 H8 111.433
Br3 C2 H4 105.426 Br3 C2 H5 105.426
H4 C2 H5 109.006 H6 C1 H7 108.100
H6 C1 H8 108.100 H7 C1 H8 108.234
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.654      
2 C -0.541      
3 Br -0.067      
4 H 0.270      
5 H 0.270      
6 H 0.232      
7 H 0.245      
8 H 0.245      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.489 -2.141 0.000 2.196
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.980 -1.067 0.000
y -1.067 -30.025 0.000
z 0.000 0.000 -32.252
Traceless
 xyz
x -0.841 -1.067 0.000
y -1.067 2.091 0.000
z 0.000 0.000 -1.249
Polar
3z2-r2-2.498
x2-y2-1.955
xy-1.067
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.885 -0.251 0.000
y -0.251 7.807 0.000
z 0.000 0.000 4.463


<r2> (average value of r2) Å2
<r2> 105.727
(<r2>)1/2 10.282