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

using model chemistry: PBEPBE/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 PBEPBE/6-311G**
 hartrees
Energy at 0K-2652.865502
Energy at 298.15K 
HF Energy-2652.865502
Nuclear repulsion energy162.425314
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 PBEPBE/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' 3044 3016 23.90 72.60 0.54 0.70
2 A' 3026 2999 4.06 137.98 0.19 0.32
3 A' 2968 2941 17.87 198.58 0.08 0.14
4 A' 1451 1438 3.19 9.26 0.75 0.86
5 A' 1436 1423 1.40 9.81 0.74 0.85
6 A' 1361 1349 6.96 5.09 0.71 0.83
7 A' 1233 1222 54.42 4.66 0.67 0.80
8 A' 1055 1046 0.15 3.77 0.53 0.69
9 A' 950 941 20.51 4.89 0.66 0.80
10 A' 547 542 15.08 16.98 0.26 0.41
11 A' 277 274 2.56 2.60 0.51 0.67
12 A" 3095 3066 12.56 24.39 0.75 0.86
13 A" 3060 3033 5.93 99.17 0.75 0.86
14 A" 1433 1420 10.63 11.08 0.75 0.86
15 A" 1224 1213 0.86 2.75 0.75 0.86
16 A" 1000 991 0.16 5.89 0.75 0.86
17 A" 752 746 5.81 0.24 0.75 0.86
18 A" 257 255 0.00 0.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14084.4 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 13956.3 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 PBEPBE/6-311G**
ABC
1.00245 0.12338 0.11466

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.049 0.000
C2 0.598 -1.088 0.000
Br3 0.000 0.803 0.000
H4 1.225 -1.185 0.895
H5 1.225 -1.185 -0.895
H6 -0.193 -3.085 0.000
H7 -1.203 -1.916 0.891
H8 -1.203 -1.916 -0.891

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51582.90912.18652.18651.10351.09911.0991
C21.51581.98311.09651.09652.14822.17352.1735
Br32.90911.98312.50042.50043.89263.10363.1036
H42.18651.09652.50041.78972.53372.53483.1010
H52.18651.09652.50041.78972.53373.10102.5348
H61.10352.14823.89262.53372.53371.78341.7834
H71.09912.17353.10362.53483.10101.78341.7827
H81.09912.17353.10363.10102.53481.78341.7827

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 111.797 C1 C2 H4 112.663
C1 C2 H5 112.663 C2 C1 H6 109.184
C2 C1 H7 111.448 C2 C1 H8 111.448
Br3 C2 H4 104.881 Br3 C2 H5 104.881
H4 C2 H5 109.395 H6 C1 H7 108.131
H6 C1 H8 108.131 H7 C1 H8 108.387
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.332      
2 C -0.361      
3 Br -0.084      
4 H 0.179      
5 H 0.179      
6 H 0.131      
7 H 0.144      
8 H 0.144      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.459 -2.101 0.000 2.151
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.067 -0.972 0.000
y -0.972 -30.006 0.000
z 0.000 0.000 -32.385
Traceless
 xyz
x -0.871 -0.972 0.000
y -0.972 2.220 0.000
z 0.000 0.000 -1.349
Polar
3z2-r2-2.698
x2-y2-2.061
xy-0.972
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.115 -0.197 0.000
y -0.197 8.224 0.000
z 0.000 0.000 4.654


<r2> (average value of r2) Å2
<r2> 107.428
(<r2>)1/2 10.365