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

using model chemistry: HSEh1PBE/6-31G*

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/6-31G*
 hartrees
Energy at 0K-2650.480739
Energy at 298.15K 
HF Energy-2650.480739
Nuclear repulsion energy164.063900
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/6-31G*
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' 3155 3000 21.05 66.47 0.59 0.75
2 A' 3136 2982 5.38 113.58 0.20 0.33
3 A' 3073 2923 17.53 144.37 0.07 0.13
4 A' 1526 1451 2.98 11.58 0.73 0.85
5 A' 1514 1440 0.97 13.09 0.75 0.85
6 A' 1437 1366 6.86 7.13 0.68 0.81
7 A' 1298 1234 57.04 3.21 0.64 0.78
8 A' 1103 1049 0.18 4.40 0.47 0.64
9 A' 994 945 15.73 4.00 0.71 0.83
10 A' 582 554 15.22 17.46 0.26 0.41
11 A' 291 277 2.38 2.19 0.40 0.57
12 A" 3208 3051 10.00 29.12 0.75 0.86
13 A" 3172 3017 5.92 84.56 0.75 0.86
14 A" 1512 1438 9.83 18.87 0.75 0.86
15 A" 1283 1220 0.57 5.52 0.75 0.86
16 A" 1046 994 0.04 5.79 0.75 0.86
17 A" 778 740 5.07 0.35 0.75 0.86
18 A" 267 254 0.02 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14687.5 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 13967.8 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/6-31G*
ABC
1.00518 0.12651 0.11734

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.024 0.000
C2 0.600 -1.072 0.000
Br3 0.000 0.793 0.000
H4 1.222 -1.176 0.889
H5 1.222 -1.176 -0.889
H6 -0.208 -3.058 0.000
H7 -1.198 -1.879 0.886
H8 -1.198 -1.879 -0.886

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51072.87432.17572.17571.09711.09351.0935
C21.51071.95921.09041.09042.14362.16052.1605
Br32.87431.95922.48252.48253.85643.05933.0593
H42.17571.09042.48251.77872.52502.51993.0826
H52.17571.09042.48251.77872.52503.08262.5199
H61.09712.14363.85642.52502.52501.77631.7763
H71.09352.16053.05932.51993.08261.77631.7722
H81.09352.16053.05933.08262.51991.77631.7722

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 111.203 C1 C2 H4 112.530
C1 C2 H5 112.530 C2 C1 H6 109.553
C2 C1 H7 111.111 C2 C1 H8 111.111
Br3 C2 H4 105.405 Br3 C2 H5 105.405
H4 C2 H5 109.292 H6 C1 H7 108.359
H6 C1 H8 108.359 H7 C1 H8 108.262
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.513      
2 C -0.348      
3 Br -0.144      
4 H 0.216      
5 H 0.216      
6 H 0.181      
7 H 0.196      
8 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.467 -2.091 0.000 2.142
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.395 -1.019 0.000
y -1.019 -29.525 0.000
z 0.000 0.000 -31.759
Traceless
 xyz
x -0.753 -1.019 0.000
y -1.019 2.052 0.000
z 0.000 0.000 -1.299
Polar
3z2-r2-2.599
x2-y2-1.870
xy-1.019
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.864 -0.229 0.000
y -0.229 7.347 0.000
z 0.000 0.000 4.609


<r2> (average value of r2) Å2
<r2> 105.132
(<r2>)1/2 10.253