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

using model chemistry: PBE1PBE/aug-cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-2652.966293
Energy at 298.15K 
HF Energy-2652.966293
Nuclear repulsion energy163.950332
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-pVDZ
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' 3141 3020 17.07 74.19 0.65 0.79
2 A' 3117 2997 7.00 126.81 0.09 0.16
3 A' 3055 2938 16.92 210.10 0.05 0.09
4 A' 1467 1411 2.23 3.72 0.75 0.86
5 A' 1455 1399 1.35 4.14 0.72 0.84
6 A' 1385 1332 7.59 2.08 0.59 0.74
7 A' 1262 1213 47.41 5.53 0.33 0.50
8 A' 1093 1051 0.28 3.91 0.17 0.29
9 A' 979 941 16.86 3.35 0.56 0.72
10 A' 583 560 15.33 19.32 0.18 0.30
11 A' 290 279 2.07 2.50 0.29 0.45
12 A" 3192 3069 6.87 26.45 0.75 0.86
13 A" 3159 3037 5.86 74.75 0.75 0.86
14 A" 1452 1396 10.55 5.37 0.75 0.86
15 A" 1252 1204 0.35 0.80 0.75 0.86
16 A" 1027 988 0.02 1.20 0.75 0.86
17 A" 766 737 3.92 0.01 0.75 0.86
18 A" 260 250 0.01 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14465.9 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 13910.4 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-pVDZ
ABC
1.00824 0.12619 0.11715

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.027 0.000
C2 0.597 -1.071 0.000
Br3 0.000 0.794 0.000
H4 1.221 -1.175 0.893
H5 1.221 -1.175 -0.893
H6 -0.193 -3.060 0.000
H7 -1.198 -1.889 0.890
H8 -1.198 -1.889 -0.890

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50972.87802.17692.17691.10061.09691.0969
C21.50971.95811.09471.09472.13982.16372.1637
Br32.87801.95812.48262.48263.85863.07003.0700
H42.17691.09472.48261.78672.52012.52203.0890
H52.17691.09472.48261.78672.52013.08902.5220
H61.10062.13983.85862.52012.52011.78151.7815
H71.09692.16373.07002.52203.08901.78151.7806
H81.09692.16373.07003.08902.52201.78151.7806

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 111.528 C1 C2 H4 112.433
C1 C2 H5 112.433 C2 C1 H6 109.114
C2 C1 H7 111.235 C2 C1 H8 111.235
Br3 C2 H4 105.295 Br3 C2 H5 105.295
H4 C2 H5 109.384 H6 C1 H7 108.326
H6 C1 H8 108.326 H7 C1 H8 108.516
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.480      
2 C -0.145      
3 Br 0.170      
4 H -0.102      
5 H -0.102      
6 H -0.105      
7 H -0.098      
8 H -0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.471 -2.178 0.000 2.229
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.038 -0.994 0.000
y -0.994 -30.141 0.000
z 0.000 0.000 -32.333
Traceless
 xyz
x -0.802 -0.994 0.000
y -0.994 2.045 0.000
z 0.000 0.000 -1.243
Polar
3z2-r2-2.486
x2-y2-1.897
xy-0.994
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.547 -0.061 0.000
y -0.061 9.032 0.000
z 0.000 0.000 6.142


<r2> (average value of r2) Å2
<r2> 105.692
(<r2>)1/2 10.281