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

using model chemistry: PBE1PBE/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-2652.974967
Energy at 298.15K 
HF Energy-2652.974967
Nuclear repulsion energy164.538754
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/6-311+G(3df,2p)
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 3123 18.80 69.35 0.53 0.69
2 A' 3105 3105 3.35 119.18 0.14 0.24
3 A' 3046 3046 16.18 191.97 0.05 0.10
4 A' 1493 1493 2.97 3.30 0.75 0.86
5 A' 1481 1481 1.96 5.30 0.69 0.82
6 A' 1405 1405 6.85 1.40 0.60 0.75
7 A' 1276 1276 45.12 6.05 0.28 0.44
8 A' 1089 1089 0.13 3.72 0.14 0.25
9 A' 982 982 17.10 3.22 0.59 0.74
10 A' 589 589 13.97 18.75 0.18 0.30
11 A' 288 288 1.90 2.51 0.28 0.44
12 A" 3173 3173 6.13 24.97 0.75 0.86
13 A" 3137 3137 5.76 73.36 0.75 0.86
14 A" 1477 1477 11.34 5.30 0.75 0.86
15 A" 1263 1263 0.27 0.87 0.75 0.86
16 A" 1036 1036 0.03 1.24 0.75 0.86
17 A" 771 771 4.06 0.01 0.75 0.86
18 A" 258 258 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14494.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14494.8 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 PBE1PBE/6-311+G(3df,2p)
ABC
1.01713 0.12694 0.11784

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.570 -2.023 0.000
C2 0.595 -1.066 0.000
Br3 0.000 0.791 0.000
H4 1.216 -1.168 0.886
H5 1.216 -1.168 -0.886
H6 -0.195 -3.050 0.000
H7 -1.193 -1.886 0.884
H8 -1.193 -1.886 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50712.87092.16952.16951.09371.09001.0900
C21.50711.95051.08731.08732.13482.15662.1566
Br32.87091.95052.47072.47073.84593.06173.0617
H42.16951.08732.47071.77272.51332.51443.0750
H52.16951.08732.47071.77272.51333.07502.5144
H61.09372.13483.84592.51332.51331.76991.7699
H71.09002.15663.06172.51443.07501.76991.7676
H81.09002.15663.06173.07502.51441.76991.7676

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 111.622 C1 C2 H4 112.483
C1 C2 H5 112.483 C2 C1 H6 109.302
C2 C1 H7 111.262 C2 C1 H8 111.262
Br3 C2 H4 105.278 Br3 C2 H5 105.278
H4 C2 H5 109.210 H6 C1 H7 108.285
H6 C1 H8 108.285 H7 C1 H8 108.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.258      
2 C -0.320      
3 Br -0.139      
4 H 0.152      
5 H 0.152      
6 H 0.127      
7 H 0.143      
8 H 0.143      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.461 -2.138 0.000 2.188
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.938 -0.955 0.000
y -0.955 -30.107 0.000
z 0.000 0.000 -32.260
Traceless
 xyz
x -0.755 -0.955 0.000
y -0.955 1.992 0.000
z 0.000 0.000 -1.237
Polar
3z2-r2-2.475
x2-y2-1.831
xy-0.955
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.481 -0.053 0.000
y -0.053 8.889 0.000
z 0.000 0.000 6.120


<r2> (average value of r2) Å2
<r2> 105.109
(<r2>)1/2 10.252