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

using model chemistry: PBE1PBE/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-2653.059615
Energy at 298.15K 
HF Energy-2653.059615
Nuclear repulsion energy164.510789
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 PBE1PBE/aug-cc-pVTZ
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' 3123 3003 19.05 71.25 0.49 0.66
2 A' 3106 2986 3.23 128.18 0.13 0.24
3 A' 3046 2929 16.40 211.01 0.05 0.10
4 A' 1491 1433 2.73 2.99 0.75 0.86
5 A' 1479 1422 1.60 5.13 0.72 0.84
6 A' 1404 1350 6.56 1.56 0.55 0.71
7 A' 1275 1226 46.18 6.55 0.27 0.43
8 A' 1089 1047 0.12 3.65 0.13 0.23
9 A' 982 944 16.61 3.22 0.61 0.76
10 A' 588 565 14.02 19.13 0.17 0.29
11 A' 286 275 1.91 2.49 0.27 0.43
12 A" 3174 3051 5.88 26.46 0.75 0.86
13 A" 3137 3017 5.81 72.48 0.75 0.86
14 A" 1475 1418 10.85 5.21 0.75 0.86
15 A" 1264 1215 0.27 0.75 0.75 0.86
16 A" 1035 996 0.02 1.12 0.75 0.86
17 A" 771 741 4.03 0.01 0.75 0.86
18 A" 256 246 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14490.5 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 13932.6 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 PBE1PBE/aug-cc-pVTZ
ABC
1.01703 0.12690 0.11780

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.570 -2.023 0.000
C2 0.595 -1.067 0.000
Br3 0.000 0.791 0.000
H4 1.216 -1.169 0.886
H5 1.216 -1.169 -0.886
H6 -0.195 -3.050 0.000
H7 -1.193 -1.885 0.884
H8 -1.193 -1.885 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50672.87122.16912.16911.09381.09021.0902
C21.50671.95141.08731.08732.13442.15602.1560
Br32.87121.95142.47162.47163.84633.06113.0611
H42.16911.08732.47161.77282.51282.51363.0745
H52.16911.08732.47161.77282.51283.07452.5136
H61.09382.13443.84632.51282.51281.77041.7704
H71.09022.15603.06112.51363.07451.77041.7679
H81.09022.15603.06113.07452.51361.77041.7679

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 111.608 C1 C2 H4 112.476
C1 C2 H5 112.476 C2 C1 H6 109.291
C2 C1 H7 111.232 C2 C1 H8 111.232
Br3 C2 H4 105.285 Br3 C2 H5 105.285
H4 C2 H5 109.225 H6 C1 H7 108.318
H6 C1 H8 108.318 H7 C1 H8 108.358
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.688      
2 C -0.368      
3 Br -0.122      
4 H 0.212      
5 H 0.212      
6 H 0.223      
7 H 0.266      
8 H 0.266      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.462 -2.132 0.000 2.182
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.970 -0.969 0.000
y -0.969 -30.141 0.000
z 0.000 0.000 -32.234
Traceless
 xyz
x -0.783 -0.969 0.000
y -0.969 1.961 0.000
z 0.000 0.000 -1.179
Polar
3z2-r2-2.357
x2-y2-1.829
xy-0.969
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.691 -0.032 0.000
y -0.032 9.057 0.000
z 0.000 0.000 6.287


<r2> (average value of r2) Å2
<r2> 105.138
(<r2>)1/2 10.254